Is Fords 3.5-liter EcoBoost engine dependable? It also causes the plug to misfire. 1. When one or more cylinders do not fire properly, the engine will become unbalanced, and this can cause severe vibrations inside your car when accelerating or idling. A misfiring engine can be a serious problem that should be fixed as soon as possible. If the problem occurs repeatedly, the engine control module will illuminate the check engine light to let you know that something is wrong so that you can have it repaired. If a sensor is failing or a sensor detects that something is wrong with the engine, it sends the information to the engine control module. Drop In Engine Power: . Excessive carbon buildup on the 2.7 EcoBoost may result in the following symptoms: Engine misfires NOTE CYFS-12-YT4 replaced the original CYFS-12-YT3 spark plug. https://www.bmdiag.co.uk/forscan-diagnostic-cable-for-ford-vgate-vlinker-fs, Touch up repairs - clues/recommendations/tips, Front end creaking/ knocking when breaking, Windows not working mk7 1.0 2016 red edition, My pcv valve is leaking oil onto the radiator fan, Ford Focus Titanium 2015 - Battery Issues. As a result, spark plugs and ignition coils start bringing issues. Starting at the PCM, centimetre by centimetre the loom was inspected for clues. Display as a link instead, December 3, 2020 Ford EcoBoost problems have caused a class action lawsuit that alleges 1.5-liter, 1.6-liter and 2-liter EcoBoost engines allow coolant to leak into the cylinders. Had a slight misfire so I changed Spark Plugs and Coils. The engine control module monitors the crankshaft rotation speed with the crankshaft position sensor, and if the speed does not increase slightly on a cylinder after the combustion, it means that the engine is misfiring, and a trouble code will be stored. V8 engines have a completely different tone than a four-cylinder engine, for example. Type B detects a condition that is progressing over time. I have looked at the video and that's exactly as I would expect to find it. The engine in modern cars uses many sensors to measure everything in the engine to make them as efficient as possible. If misfires are occurring randomly, the check engine light may remain on. By understanding the causes, symptoms, and how to fix it, you can keep your car running smoothly and avoid expensive repair costs. Some mechanics prefer to use anti-seize lubricant grease on the threads, but most spark plug manufacturers do not recommend using anti-seize since it can easily lead to over tightening. If you get a 3.5L EcoBoost in your shop with misfire code(s) P0300-0306, pull the plugs and coil boots and look for . Thank you for your help. Paul 56 There is a red locking tab on the plug: I took it back home since I didnt have $3000 at the time and on a gamble went down to the auto parts store and bought the tools and spark plugs to swap the plugs out. 7. . Like you I thought spark plugs and changed them early on but sadly no improvement. Low Engine Compression. Im not sure whats going on but whenever I try to drive it Ill put it in drive and it will start to go and when you give it gas it will accelerate for a second then rev high like it shifted into neutral then shift and it will repeat that same cycle until the car switches into failsafe mode.. any advice on where to start? Any thoughts, is the fiesta 1.0 ecoboost prone to wiring loom faults, ecu faults, multiplug pin corrosion, water getting places it shouldn't? Well discuss some of the most common issues with the Ford 3.5 EcoBoost V6 in this article, as well as its overall reliability. First check all ground connections are clean and tight. Since the 3.5L Ecoboost in my Expedition has 79,000 miles on the original spark plugs, I decided to replace all (6) spark plugs with new ones. The misfire can come or go depending on what is going on with the ECM. If your car engine sounds unusual, its possible that your engine is misfiring on every cycle. General discussion on 2009 - 2014 Ford F150 truck. Zain here The next thing you want to check is the fuel pressure. https://www.youtube.com/watch?v=0J83RZi3eCE, Hi thanks for your reply. Symptoms of 3.5L Ecoboost misfire are usually related to heavy carbon build-up on the ignition coil. Terms of Service - If I need to take the car back as is I will invest in the FORScan system suggested above. Most likely, you will be unaware of a gradual loss of power over a period of several years. Advertising - Repair this yourself or, if you prefer, have it done by a repair shop. Then, clear the codes and drive for a while to see if the problem has moved to another cylinder. Changed the coil packs, no improvement. Condensation in the Intercooler. in both cases, the engines were significantly under the mileage recommendation to replace the spark plugs. Had a slight misfire so I changed Spark Plugs and Coils. You can either get one yourself, or go to a mechanic and borrow their diagnostic tool to read the trouble codes from the ECM. The Ford 3.5L EcoBoost engine can power several models, including the Ford F-150 and the Lincoln Navigator. If the problem comes from the drivetrain and not the engine, the CV joints or driveshafts are common causes. Is it in the fuel tank as part of the pump module? Driving with a misfiring engine may not be dangerous right away, but over time it will wear on your engine and you can potentially damage the vehicle. In the case of a misfire a P0300 (random or multiple cylinder misfire), or specific cylinder P0301-P0306 should have triggered. You may or may not be able to monitor High and Low side Fuel Pressure readings, actual and desired. Causes & How To Fix It. Additionally, while youre in there, consider replacing a few other small items. Then, go backwards to cylinders 2,3,4,5,6 on the driver's side. Ford had a PCM reflash for these cars after the first few model years for the computer as to not trip a code on cold start misfires. Leave a comment and inform us! OEM COILS - Keep in mind no check engine light just a slight miss under light loads and typically above 60MPH (1200-1500 RPM) Didn't solve the problem, re did the process . Symptoms of 2.0L EcoBoost Coolant Intrusion. Removed all wires one at time, #2,3,4 all made engine want to stall when removed. Has been a great explanation about the theme. Misfires can cause serious damage to your engines internal parts and the catalytic converter, which can be very costly to repair. There are several misfire related trouble codes. We typically recommend replacing all six spark plugs or ignition coils at the same time; this is especially true if they havent been changed in a while. In fact, nuzzle 2 & 3 does not bring up any sign it is OK when removed from the plug head to the nuzzle. MAF and air filter look to be clean and dry. Fuel related misfires can be caused from not enough fuel. I4 2.3L EcoBoost Engine / Mods: Bolt-ons, Exhaust, . Low coolant levels can lead to the engine overheating, misfiring, or catching on fire. The pre-2017 3.5L EcoBoost engine had several issues ranging from engine misfires to timing chain issues, while the second-generation engine introduced in 2017 had improvements in timing components and fuel injection. Some F-150 owners have complained of a mysterious misfire on these engines. The advantage of port injection is that fuel is washed over the intake ports and valves. Anyone know what thelow range fuel pressure sensor reading 5 volts is telling us? Paste as plain text instead, Did you fit standard OEM? If the engine speed increases, it means there is a leak and the engine is injecting the flammable spray. Save my name, email, and website in this browser for the next time I comment. If your car engine is misfiring, it is important to find out the cause and fix it as soon as possible. Its plastic, so you dont want to pry on it or you may break it. The official Ford website can be found at http://www.ford.co.uk/, Fiesta 2013 1.0 Ecoboost misfire and or hesitation under light throttle. My problem is, that it starts shaking when I accelerate to a certain speed. If you cant find any problems on the spark side, its time to look at the air-fuel mixture. (6) Motorcraft SP-580 (CYFS-12-YT4) spark plugs. I do see codeB10EA from the positive temperature coefficient heater sometimes but have assumed that cant be related. Ford has also issued bulletins, indicating that they are fully aware of the timing chain issues. READ MORE: 6 Symptoms of a Bad Ignition Coil (& Replacement Cost). Here's How To Fix It, 5 Symptoms Of Bad Gas In Your Car and How to fix it, 8 Causes Of Low Engine Compression and How To Fix It, 5 Symptoms Of A Bad Engine Control Unit and Replacement Cost, P1326 Code Meaning, Causes, Symptoms (& How To Fix), 5 Symptoms Of A Bad Engine Control Module and Replacement Cost, P1131 Code Meaning, Causes, Symptoms (& How To Fix), Car Wont Accelerate But RPMs Go Up: Causes & Fixes. So I would start there and then continue troubleshooting from whatever code you get. The most common signs of bad ignition coils in Ford F-150 are engine hesitation when accelerating or loss of power, rough idle, misfires, excessive fuel consumption, check engine light illuminates, and sometimes hard starting. You cannot paste images directly. A blown head gasket can cause low compression. With the retaining the ignition coil plug unplugged and the retaining bolt removed, you can now pull the coil straight out of the hole. Connect a compression gauge to the spark plug holes and crank the engine several times. Yeah the misfire is only on cylinder 4 according to the AP and about 2 weeks ago it began. If you find trouble codes on an engine sensor or low fuel pressure, youll want to start the diagnosis from there. RyanP2023 Hi, Magnus i read your instructions, i own a vw tourage 2008, according to the trouble codes i got from dtc the engine has a misfire on all 6 cylinders, and random misfire, one thing that i wonder is that the engine sounds smoothly well tuned, the check engine light is on, I'm replacing the spark plugs they are dirty and according to the a page that i found in Google the gap should be. This is a repeat of a problem I had about 2 years ago which was never diagnosed but cleared itself which is always a bit unsatisfactory Initially the symptoms were very noticeable and made the car difficult to drive, then progressively improved during the 10 mile journey home and are now just annoying. This is what causes the misfire. The problem is variable and intermittent but looks to be the same using both the original and a spare fuel rail pressure sensor. I'd get rid of this truck if I could but the timing just isn't right. If the fuel injector injects the wrong amount of fuel, it will cause the engine to run rich or lean, which can lead to engine misfires. Yes I agree. Ford did an excellent job updating some of the engines weak points with the second generation engine. Jan 23, 2021. ouguru said: 2011 F150 FX4 with 3.5L Ecoboost developed a severe misfire at 65k miles. Only history I have is the truck has had all six ignition coils replaced . On the 3.5 EcoBoost, some symptoms of timing chain, guide, tensioner, and cam phaser failure include the following: Rattling on cold starts is one of the more common symptoms of a timing chain problem. Turbos lead to high cylinder pressures, which in return stress the entire ignition. Remove the dipstick and place it on the clean rag to avoid contaminating dirt and debris. 2: What fuel are you using? Another possible problem that can cause misfire fault codes on only one side is low compression. Ford 2.7 EcoBoost Now Problematic. Therefore, if you notice that your car engine idles rougher than usual, it could be a sign of a misfiring engine. 5. The most common causes of engine misfires are bad ignition coils or failed spark plugs. Hi all, my 1.0 ecoboost has recently started to misfire or hesitate under light throttles. However, Ford pioneered the use of turbochargers, direct injection, and variable valve timing. Additionally, engines are prone to a variety of other issues that we are not discussing particularly as they age and mileage increases. Started August 19, 2022, By SMax auto is slow to shift down to 1st gear. Hi my name is Victor I have a 07 Pontiac Grand Prix V6 I am getting a code low sufficiency threshold have changed wires plugs coils and it runs fine and when I put it under a load start start to run rough so what clean the injectors again it runs fine until I put under load what is the problem, I replaced both coils 8 spark plugs and wires still running bad checked my ekg valve it works motor still shakes and body as well could it be a faulty fuel injector I need help. 8. Ecoboost 1.0 - Difference Between 100Hp And 125Hp Version ? You earlier indicated that your reservoir tank was "lowering as usual" or similar to that wording without me going back and checking. . While this is a common issue with the EcoBoost, it does not occur with every engine. Yes it sounds like lean mixture caused by either low fuel pressure or vacuum/boost leak. Specific information about the Ford 3.5 timing chain problems is scarce. Slide the electrical connector straight back into the socket until it clicks securely into place. Jun 30, 2021. Once the carbon deposits become excessive, walnut blasting the intake ports may be necessary. The wideband front O2 sensor should show a Current of 0 most of the time under constant or no Throttle openings. I had an F150 and an Escape both do exactly these same things. However, using PI has a few additional benefits, most notably assisting in the prevention of carbon build-up. When the engine control module receives the data, it will determine if the problem is serious or not. Here is a more detailed list of the most common cause of engine misfires: The most common cause of an engine misfire is a bad or failing ignition coil. I hope you enjoyed this article and now have the expertise to diagnose engine problems like misfires and fix the problem with your car yourself to save some money. Discuss all things maintenance here. What do I do? Started 4 hours ago, By Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. I turned around and headed home, and after a short distance, the check engine light stopped blinking, and the truck seemed to run smooth again. With the hood popped, standing in front of the vehicle, looking at the engine the cylinder numbering starts at the front left (passenger . Remove the insulated cover over the injection pump to get to spark plugs # 5, and #6. I think the Fuel Pump Module is at the Fuel Tank, I'm not sure where it measures the pressure though. However, you have some control over how well the twin turbo EcoBoost engine is maintained. Update, car is back from the garage without a diagnosis. Nonetheless, turbo technology has advanced significantly over the last few decades. laumk7 Anyone changed a PCM for a second hand unit, can ForScan do the setup and or reprograming? If I do, Ill update this page. This is what causes the misfire. The socket should have a rubber insert or a strong magnet to securely hold the plug in place. Key Points. If not, change them, 6: If all that fails then it could be a clogged injector or a coil is going down, FORScan: https://forscan.org/download.html, New style 'vLinker FS' lead for use with the latest version of FORScan: https://www.bmdiag.co.uk/forscan-diagnostic-cable-for-ford-vgate-vlinker-fs. When I first purchased the fuel mileage was horrible but my smiles per mile was up, now the best Ive seen from the lie-o-meter was 19mpg on the highway and heck I still smiled.WTH..lol. Good morning. Your link has been automatically embedded. Early EcoBoost engines were also known to catch on fire, leading to a 2012 recall and "stop driving" order from Ford. Engine Control Unit (ECU) begins to misbehave . Fortunately, this is not a time-sensitive task that requires immediate attention, and you may not even want to do it at all. Hi guys When it reaches normal speed it quit shaking. NQbbe If the misfire is specific to a cylinder, it may display a check engine light and a DTC such as P0301, P0302, P0303, P0304, P0305 or P0306. . Please register or login to enable Dark Mode. After a bit of discussion we realised that my scan tool and the garage scan tool both indicated that the low range fuel pressure sensor was showing 5 volts which sounds more like open circuit than an an accurate reading. Up Next: Ford 1.5 EcoBoost Engine Problems: The 4 Most Common Problems. Another subject well delve into. Get at least 20% off selected Ford parts on eBay View parts on eBay now! Remove the bolt that holds the coil pack in place with a 8mm (5/16) socket. 6 Symptoms of a Bad Ignition Coil (& Replacement Cost), 5 Signs of a Bad Intake Manifold Gasket (& Replacement Cost), Low Fuel Pressure Symptoms, Causes (& How To Fix it), 8 Symptoms of a Bad Fuel Injector (& Replacement Cost), 8 Causes of Low Compression in a Car Engine (& How to Fix), How to find a Vacuum Leak & How to Fix It (8 Easy Steps), Car Jerking When Accelerating? Bad Ignition Coil. Carbon buildup, on the other hand, can result in power loss and a variety of other drivability issues. Is there any cheap way to improve compression or get rid of the code? Rough acceleration is a typical sign that your engine is misfiring. If an issue does occur, it is prudent to replace the entire timing chain assembly. Great helpfully web site. Smoke Can Indicate Danger For You. For complete cylinder combustion to occur, the engine needs three important things, and that is the correct air/fuel mixture, compression, and spark. Those idiots told me I needed a new charge air cleaner, intercooler, possibly new turbochargers and whatever it was would be like $3000. Although mostly reliable, a Ford 2.7 EcoBoost engine has problems including carbon build-up, oil pan leaks, and spark plug and ignition coil issues. Try better fuel, see if it goes away. Reinstall the injection pump cover, the engine cover, and the oil cap. Carbon deposits should not pose a serious threat to the 3.5 EcoBoosts longevity. Diagnosis: A cylinder 3 misfire can be caused by anything from faulty spark plugs to low engine . My thinking is at low absolute loads the target fuel pressure is relatively low so the PCM is looking at the low range sensor, however this is at a constant 5 volts (no pressure conversion on my scan tool) which sounds like top scale, so the PCM thinks it needs to shorten the injector pulse width. The last number represents the cylinder that is having the misfire. The engine misfires, resulting in rough idling, stuttering, and fault codes. If you notice that it vibrates more than usual, it could be a sign that the engine is misfiring. Castrol Edge vs. Mobil 1 Oil: Differences & Which Is Better? Seriously you need to find a different garage. by Aungsty Thu Mar 23, 2017 6:38 pm. Vehicle does not drive like it used to. Many faulty 3.5 EcoBoost timing chains, on the other hand, were almost certainly replaced at some point. With closer inspection it was clear that there was contact between the loom and the square edge of the bracket. If you know a little about cars, youve probably noticed a difference in sounds from different engines. To determine if you have low compression, remove the spark plugs. A set of ignition coils costs between $200 and $300. If it is too high or too low, you need to inspect the components of the fuel system such as the fuel pump, fuel filter, and fuel pressure regulator. The first day I had my truck, changed plugs and boots.had to it misfired like mad on the way home and knew it had to be done..got a extra 1k trade in for taking it that way and then drilled hole, also cleaned the maf sensors, ran like a champ and still does. More often than not, your engines computer will be able to detect bad spark plugs in your F150. I have a problem with my Opel Monza GSI fuel injection 1.6 car only revs up to 3000 then back fires and the engine light comes on we change the fuel pump but still nothing any help please, Hi I have a ford cortina 2l i fit al new parts coil carburetor sparkplugs plugwers dustubetor points condensor and suer of timming slil cant start please can somebody tell me what to do. Maintain the Ford EcoBoost engine properly, and it will almost certainly reward you with a dependable, enjoyable driving experience. 4. This messes the air-fuel mixture causing the Ecoboost to misfire on your Ford F150. This has been done since 2011 to get these 3.5 ecoboosts to work better. Fixing a misfiring engine can sometimes be difficult without the right knowledge and tools, due to the multitude of possible causes. However right now this is what I've got since I wanted to spend $20k not $35k. This can lead to a variety of engine performance issues and can even lead to serious engine damage if left untreated. Rather than that, they are a few of the most frequently encountered issues when something goes wrong. The fuel idea has crossed my mind, the car is usually filled with regular supermarket fuel, however, on this occasion I had just filled up with fuel from one of the major UK fuel and oil brands, still regular unleaded E10. they then suggested that I replace all plugs and boots and get an induction flush. Turbo engines require more maintenance than the average engine. The Ford 3.5 EB strikes an excellent balance of power, torque, towing capacity, and efficiency. i have a 2013 kia forte, the check engine light came on and, the car does not have an engine problem. Its my first scan tool which has been useful but is limited by my knowledge and the small screen. Ignition coils should last approximately twice as long. What else can I do??? TuningPro.co is owned and operated by 8020 Media. Shops frequently charge between $400 and $600 for this service, so its not exactly inexpensive. Zain from S.A, I have a bmw e30 320i 1989. The car has run perfectly all summer but in the last couple of weeks the fault is back. If you think you may have a problem with engine misfires, the best thing to do is take it to a mechanic to have it checked out. I did not find any evidence of carbon tracking on the plugs I removed. This is not a critical situation that requires immediate attention. My 1997 Sebring run good , as long as I stay under 65 . Its critical to establish this for a reason. 2013 Ford Escape SEL AWD 2.0 Ecoboost Mileage 110,000 Hello! Manage Preferences - Fuel related misfires can be caused from bad fuel. Here we will look at what you need to know about engine misfires. This is a lot of Ford and Lincoln EcoBoost engines. The check engine light is one of the most common symptoms of bad spark plugs. Likes: 15. In my case cyl 2 4 6 8 on a dakota 4.7. While timing chain issues are unlikely to be as prevalent as some may believe, they are something prospective owners should be aware of. Before we begin, lets jot down a few quick notes. There arent many issues that frequently occur with these engines. Now the symptoms are less noticeable there are no codes. Ford 2.7 EcoBoost Spark Plug & Ignition Coil Symptoms. Again, be careful that you dont apply to much force and break the plug. but I don't feel or hear any misses . To find out if your engine has low compression, you need to do a compression test and compare the results to the manufacturers specifications. The 3.5 liter twin turbo V6 engine was then integrated into a variety of other Ford and Lincoln models over the next few years. The most common situation where you will feel misfires is in high gear, low RPM, and with the gas pedal to the floor. It is important to start by reading the error codes to know where to start troubleshooting. Small bore plastic vacuum lines around the back of the engine have been removed and inspected, all look fine. Started Wednesday at 03:50 PM, Ford Owners Club For the F150 I asked a Ford dealer in Minnesota to diagnose it. A high-quality shop vac and walnut media shells are required for this job. Remove the ignition coil from that cylinder and replace it with one from a non-misfiring cylinder. However, this problem still pops up from time to time in the Ford 3.5 Ecoboost engine upgrades. Remove the engine oil filler cap, and remove the plastic engine cover by lifting up and pulling forward. Turbo engines do require some additional maintenance, but we believe it is worthwhile in the long run. The carbon deposits can cause un-even amounts of air to enter to cylinders. Clear editor. Youll have to push down on the gray tab to get the plug to connect from the coil. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. Truck: 2011 F-150 XLT Super Crew. I really appreciate you, thx for sharing that with us! Copyright 2023 Mechanic Base. If youre unlucky, it could be due to poor compression, which can be very expensive to repair. Here are the 6 failures and what to look for. I've pulled the injectors and sent them for cleaning and testing, will report back results. On Christmas morning 2019, I began pulling away hard from a traffic light, when suddenly the 3.5L Ecoboost in my 2016 Ford Expedition stumbled a couple of times. Yes. How to Spot Carbon Buildup. 2. Some vehicles have a separate ignition coil on every spark plug, while some cars have one coil pack with an ignition wire to each spark plug. I have a golf 6 TSI model 2010, I changed new spark plugs, ignition coil and spark plugs cables but the car still misfires at times but not always. Also make sure that the correct viscosity of oil was put in as the wrong "weight" of oil can make the VVT malfunction. Double check that the spark plugs are tight before moving on to the next steps. Here is a look at (2) of the spark plugs that I removed. My 2004 skoda octavia 1800 petrol turbo 20 valve engine is misfiring ive had it on dinostic and nothing is showing up its worse in the morning when started up struggling to tick over have you any idea what it could be please. 1. Ford addressed this issue with the second-generation 3.5 EcoBoost by utilizing both direct and port injection. He shows location of low side pressure sensor (and goes through other common faults). Parts of the ignition system such as spark plugs and ignition coils are also a disadvantage of turbocharging. However, when only DI fuel is used, there is nothing to assist in cleaning the ports and valves. Simply because these issues are classified as common does not mean they affect a large percentage of 3.5 V6 engines. With the ignition coil out, you can remove the spark plug using a 5/8-inch spark plug socket, extension, and ratchet. Your previous content has been restored. (Heres How To Fix it), 7 Best Spark Plugs Review & Buyers Guide, Car Losing Power When Accelerating? Remove the insulated cover over the injection pump to get to spark plugs # 5, and #6. Continuing to drive with a misfiring engine can cause serious damage to your cars engine. However, because carbon build-up occurs over time, it is frequently difficult to detect. 4) Poor Engine Performance. less than 5-10 Deg C. The PCM was changed by the main dealer back in May, I suspect a couple of minor miss fire moments since but the jury is still out, particularly given the warm summer weather. 27 Jan 2018 00:24 - 28 Jan 2018 10:44 #17294. Spark plugs are gapped to .30 and SP-580. However, finding these vacuum leaks is often quite easy and we will talk about that further down in the article. So far the dealership has replaced a coil and all spark plugs, misfire no longer severe, but still present. I haven't done anything with the turbo bypass valve so far assuming that at these very light throttle loads the turbo can't be contributing much if anything. Some 2011-2012 F-150 models equipped with a 3.5L EcoBoost V6 engine may exhibit an intermittent stumble and/or misfire on hard acceleration after an extended drive at highway speeds during high humidity or damp conditions. If not maintained, it could mean sending the car to the junkyard sooner . The 3.5 EB comes in two distinct generations, which we will discuss briefly below. Its a powerful engine with 355 to 647 hp and plenty of torque. Started February 9, By May 9, 2021. Remove the spark plug and ignition coil from that cylinder and visually inspect them and replace them if they look bad or dirty. How long can you drive with a misfiring engine? Getting good spark. Tajsingh If your Scan Tool can give you access to Mode 6 Data then there may be some clues there. When an engine misfires, it can cause reduced fuel economy, engine damage, and a loss of power. Rev going down and vibrating when gear is engaged. Hi guys. So, as its intermittent and clears after 5 or 6 miles I'm continuing to drive it hoping some new clues will appear, its done about 2k miles since the last trip to the garage. Misfires Rough idle Stuttering / hesitation Power loss Check engine light (misfire codes) Prevent ignition coil failures Identifying these issues can be a little hard. 3.5L EcoBoost Timing Chain Rattle Symptoms & Fixes, Ford Fuel Pump Driver Module Failure Symptoms & Solutions. Hi Iam driving corsa 1.6 gsi 2002 model, the engine it's got hard start and badly sound idling, need to be rev for idling, when I leave rev cable, the engine loose the idling gose off, again on the spark plugs no1 and no2 there's spark but doesn't ignit the fuel mixer, I don't know what's problem.