I would start with checking for any leaks around the intake and connect a fuel pressure gauge if possible! Ford 3.5L EcoBoost Problems - UnderhoodService Thank you for explaining how "misfires" are detected by the camshaft position sensor detecting slight changes in engine speed. If you already checked the fuel supply and the spark and couldnt find any problems with it, there is a risk of low compression in your engine. Ford F-150 Misfire Symptoms. General discussion on 2009 - 2014 Ford F150 truck. If you have any of these symptoms, it could mean the camshaft position sensor needs to . Ford F150: Bad ECM Symptoms + Diagnosis | Drivetrain Resource When the engine control module receives the data, it will determine if the problem is serious or not. 165k miles #1 cyl misfire code. Faulty plugs. If misfires are occurring randomly, the check engine light may remain on. This assists in removing oil deposits and preventing them from accumulating. If not maintained, it could mean sending the car to the junkyard sooner . With the retaining the ignition coil plug unplugged and the retaining bolt removed, you can now pull the coil straight out of the hole. but I don't feel or hear any misses . Here is a more detailed list of the most common cause of engine misfires: 1. Therefore, the first thing you want to do when diagnosing misfires is to check the trouble codes with an OBD2 scanner. In any case, the first generation EcoBoost produces 355-380 horsepower, depending on the vehicle. Ford EcoBoost Has a Dangerous Engine Defect, Owners Say Carbon build-up is simply a disadvantage of relying solely on direct injection. Ford also added port injection to the second-generation 3.5-liter V6 twin turbo engines. Automotive Performance, Tuning, & Modification. The most common causes of engine misfires are bad ignition coils or failed spark plugs. If you lose power while driving on a busy road, this is a safety hazard. A class-action lawsuit just filed says that the 1.5-liter, 1.6-liter, and 2.0-liter EcoBoost engines leak coolant into cylinders. Leave a comment and inform us! However, it depends on how serious the fault is and what specific repairs need to be made. Check battery terminals are properly clamped and that the earth lead between the engine and chassis is good. Best regards, Hi Mr. Selln More often than not, your engines computer will be able to detect bad spark plugs in your F150. Thanks for the great information passed on. If your engine misfires, it will feel like the engine is shaking or vibrating, and it may make a knocking noise. The numbering of the cylinders on a Ford F150 starts from cylinder 1 on the front and goes backward. In any case, the issue at hand is one of timing chain stretching. Rev going down and vibrating when gear is engaged. Timing chain replacement is likely to cost in the thousands of dollars range. Is there any cheap way to improve compression or get rid of the code? If you are installing brand new plugs, tighten them until you feel the new crush washer collapse. Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, 2006 F150 5.4 Sputtering - New thread CONDENSED. Unfortunately, low compression problems are often caused by worn parts inside the engine, which can be very expensive to fix, so youll want to inspect the other possible causes first. Started 8 hours ago, By Zain here Smoke Can Indicate Danger For You. Ford F150: Bad Spark Plugs Symptoms and Diagnosis Learn more here: How to find a Vacuum Leak & How to Fix It (8 Easy Steps). The second most common cause of a misfiring engine is bad or failing spark plugs. Additionally, turbocharged engines, such as the Ford 3.5 EcoBoost, have more components that could fail. 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. 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. Has been a great explanation about the theme. Like you I thought spark plugs and changed them early on but sadly no improvement. An engine with a bad ECM will often run rough and misfire. Early EcoBoost engines were also known to catch on fire, leading to a 2012 recall and "stop driving" order from Ford. Started February 26, By Had a slight misfire so I changed Spark Plugs and Coils. Connect a compression gauge to the spark plug holes and crank the engine several times. Just a theory. My scan tool isFoxwell NT530 Full Systems Scanner for Ford, which is a small stand alone hand held unit with access to all vehicle modules. Several Ford owners have filed a proposed class action lawsuit against the automaker alleging a vehicle defect in the EcoBoost engine causes coolant to leak into the cylinders, causing the potential for engine fires and failure, misfires, collision risk, and costly repairs.. Fuel related misfires can be caused from too much fuel. 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. 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. So the car in now at a local garage and they are struggling as well. [FIXED] 2011 f-150 3.5l GTDI misfire under load was created by ptebo1. I think the Fuel Pump Module is at the Fuel Tank, I'm not sure where it measures the pressure though. Received 31 Likes on 28 Posts. Ford has also issued bulletins, indicating that they are fully aware of the timing chain issues. This revealed a short circuit to earth for one of the HP fuel rail sensor wires. Here are some of the symptoms of a bad VCT solenoid: 1. Once the carbon deposits become excessive, walnut blasting the intake ports may be necessary. With the ignition coil out, you can remove the spark plug using a 5/8-inch spark plug socket, extension, and ratchet. Low fuel pressure can be caused by a faulty fuel pressure regulator, a faulty fuel pump, or a clogged fuel filter. This is not to say that the first generation engine is a bad engine by any means. However, Ford pioneered the use of turbochargers, direct injection, and variable valve timing. Ecoboost Misfire Solution! - Ford F150 Forum 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. Paul 56 Speechless. You can post now and register later. I don't know what Scan Tool you are using but FORScan is your best bet for Live Data on any Ford car. Started 2 hours ago, By Often, spark plugs are to blame, as their lifespan is significantly shorter than that of ignition coils. March 10, 2022 in General Ford Related Discussions. Causes and Methods to Fix Multiple Cylinder Misfire on Ford F150. If either the distributor or the ignition coil creates a weak spark, it can cause misfires. If this does not work, repeat the procedure using the 3.5 EcoBoost spark plugs. Fortunately, this is not a time-sensitive task that requires immediate attention, and you may not even want to do it at all. If the timing chain completely fails, additional damage to the 3.5 EcoBoost engines is possible. Truck ran pretty good even picked up about 1.5 mpg, then the last couple of weeks it has become a tired dog. Symptoms of a spark plug or ignition coil on the verge of failure include the following: Typically, plugs and coils exhibit the same symptoms. All Rights Reserved. Apply some dielectric grease to the opening in the rubber dust boot at the bottom of the ignition coil. Started Thursday at 09:49 AM, By Up Next: Ford 1.5 EcoBoost Engine Problems: The 4 Most Common Problems. Misfires can cause serious damage to your engines internal parts and the catalytic converter, which can be very costly to repair. This oil eventually cakes onto the intake valves as it travels through the intake tract. 3.5L EcoBoost - Cold Start Ticking/Tapping Or Rattle Type Noise - Built On Or Before 31-Oct-2019 20-2315 14 September 2020 This bulletin supersedes 20-2191. So far I filled the the tank with premium fuel and added an injector cleaner, no change after 100 miles. Why Does the EcoBoost Engine Keep Catching on Fire? - Ford Problems But, if the wastegate or bypass valves are leaking, you might not hear any noise. Update, still not fixed, Ford Main dealer have discussed with Ford UKand both are unable to offer a diagnosis with any confidence. No PCM codes so I'm using the car to see if anything changes or codes appear. We used Mitchell 1 to look up the information for setting a P0300. Is this possible ? In worst case scenario, if the ignition coils are in really bad condition, the engine will not start. Worst pressure condition in the cylinder. I finally adjusted the float screw anti clock wise and my problem was solved. John, thanks for your reply. <>Avoid over tightening the bolt to prevent from cracking the plastic ignition coil housing. UPDATED: I have had an issue since I purchased the truck 10 months ago. I wasn't very succinct with my summarybut yes, I agree fully with Bravo and Whoand yes, when I have it to do again, I'll never own another boosted motor. Started Wednesday at 06:15 PM, By Contact Us - The car is my daily driver and I'm not necessarily looking for an . I have a different engine to your one but for comparison my Low side pressure is normally around 400-450 Kpa. If the misfire persists after installing the new cylinder, youve identified the source of the problem. 2. Ford F-150 3.5L Ecoboost Repeat Engine Misfires: Diagnostic - YouTube Any no improvement. Update, car is back from the garage without a diagnosis. VVT has the ability to generate more power or save more fuel depending on the phase of the camshafts. You can check for vacuum leaks by gently spraying a flammable spray around the engines intake manifold while the engine is idling. This misfiring of the Ecoboost leads to rough idling, stuttering, and fault codes. Under hard acceleration (i.e., boost) or at highway speeds, an intermittent stumble and misfire reportedly can occur during high humidity or damp conditions. There is a red locking tab on the plug: Check light blinking, car acceleration slow. To fix engine misfires, you need to read the trouble codes from the engine control module and continue troubleshooting from there. Additionally, they address a few reliability concerns, making the Ford 3.5 twin turbo engine from the second generation even more reliable. Cookie Policy - F150 3.5L Ecoboost misfiring | Ford Forums The next thing you want to check is the fuel pressure. There are always a few kinks to iron out, and they were relatively minor with the 3.5 V6. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. If an issue does occur, it is prudent to replace the entire timing chain assembly. Read the manufacturer's instructions and set up the pump. Due to the high turbo boost pressures, spark plugs and ignition coils are subjected to significant abuse. I did the thottle position sensor reset procedure and that helped for about 2 days. Leakage and excessive fuel burn. First check all ground connections are clean and tight. Started February 5, 2013, By In the case of a misfire a P0300 (random or multiple cylinder misfire), or specific cylinder P0301-P0306 should have triggered. Older cars use a distributor to distribute the spark to all the spark plugs, which are powered by an ignition coil. A set of ignition coils costs between $200 and $300. Started 4 hours ago, By Remove the plug on the ignition coil of the cylinder you're working on.