As a result, symptoms such as fault codes, a rough idle, and stuttering may occur. This has been done since 2011 to get these 3.5 ecoboosts to work better. Save my name, email, and website in this browser for the next time I comment. Finally, when the timing chain stretches, it can throw off the ignition timing, resulting in drivability problems. The engine hesitation misfire symptoms are very mild at the moment and only occur while the engine is warming from a cold start, say 1 to 3 miles after start at about 50mph and on light cruising throttles. Additionally, turbocharging and direct injection assist the 3.5 V6 in remaining fuel efficient and emission-free. For the F150 I asked a Ford dealer in Minnesota to diagnose it. The check engine light is one of the most common symptoms of bad spark plugs. Now the symptoms are less noticeable there are no codes. In addition to removing the injectors other items including air ducts, air box, filter MAF, battery, PCM and battery box were removed to help further inspect the wiring loom. . Additionally, the 3.5 EcoBoost may generate the P0016 fault code, which will illuminate the check engine light. Only history I have is the truck has had all six ignition coils replaced . The car engine is most sensitive to small air-fuel mixture problems at idle, so this is probably one of the first places you will notice misfires. The carbon deposits can cause un-even amounts of air to enter to cylinders. Now invested in FORScan and cable suggested above so will dig a bit further over the next few days, any suggestions on which variables to monitor? 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. Otherwise, its primarily labor associated with gaining access to the intake ports. 2011 f-150 3.5l GTDI misfire under load - SCANNERDANNER As for these Ford 3.5 EcoBoost, problems result from the engine using a direct injection fuel system and being twin turbo. The most common situation where you will feel misfires is in high gear, low RPM, and with the gas pedal to the floor. 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. However, because carbon build-up occurs over time, it is frequently difficult to detect. It can also be caused by fuel-related issues such as a faulty fuel injector or a bad fuel pump. It does sound like it is running lean, it's strange that there are not codes all the time. If you see a blinking or flashing check engine light, thats another strong sign that your engine is misfiring. The 74-page lawsuit was filed by five plaintiffs, Robert Reed, Stacy Coppock, Craig Morford, Kelli Morford, and David . Its a simple task that almost anyone can complete in less than an hour or two in their driveway. Symptoms of a spark plug or ignition coil on the verge of failure include the following: Typically, plugs and coils exhibit the same symptoms. 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 . Also make sure that the correct viscosity of oil was put in as the wrong "weight" of oil can make the VVT malfunction. 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. Best regards, Leave a comment and inform us! There arent many issues that frequently occur with these engines. In todays article, we will discuss the meaning of engine misfires and what possible issues can cause them. jsk Under hard acceleration (i.e., boost) or at highway speeds, an intermittent stumble and misfire reportedly can occur during high humidity or damp conditions. If youve checked all the things above, but still cant figure out whats causing the misfires in your engine, it might be worth taking the car to a professional mechanic instead. danielsan8787 Most likely not your air filter. Seriously you need to find a different garage. Automotive Performance, Tuning, & Modification. UPDATED: I have had an issue since I purchased the truck 10 months ago. The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. Timing chain replacement is likely to cost in the thousands of dollars range. Replace oil cap. I have had it in several times, with no results. If your engine is misfiring, it's important to determine the cause as soon as possible. by Aungsty Thu Mar 23, 2017 6:38 pm. Additionally, direct injection causes carbon deposits on the intake valves, which can cause drivability issues. 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. Truck ran pretty good even picked up about 1.5 mpg, then the last couple of weeks it has become a tired dog. One of the conditions that is required to set the code is a fuel . I did the thottle position sensor reset procedure and that helped for about 2 days. 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. 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. If you are installing brand new plugs, tighten them until you feel the new crush washer collapse. Turbo engines do require some additional maintenance, but we believe it is worthwhile in the long run. Had a slight misfire so I changed Spark Plugs and Coils. The main symptoms of an engine misfire include: Here is a more detailed list of the most common signs of engine misfires: When an engine misfire occurs, you may feel a strong or light jerk coming from the engine. Remove the engine oil filler cap, and remove the plastic engine cover by lifting up and pulling forward. If I need to take the car back as is I will invest in the FORScan system suggested above. Many faulty 3.5 EcoBoost timing chains, on the other hand, were almost certainly replaced at some point. The car has now been back an forward to a Ford main dealer over the last two weeks and they are stumped. 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. Ford has also issued bulletins, indicating that they are fully aware of the timing chain issues. However right now this is what I've got since I wanted to spend $20k not $35k. Engine misfires can actually be quite difficult to diagnose even for us experts in the field. Pretty common to have a misfire on these motors on cold start. Once at normal operating temperature the car drives perfectly with both fuel trims very close to zero, although there is a power dip flat spot at full throttle 5500rpm which is odd, e.g. Spin in the spark plug a few turns by hand in the clockwise direction to prevent it from becoming cross threaded. You may also notice other performance issues, like slower acceleration than usual or a stalling engine while accelerating. You may or may not be able to monitor High and Low side Fuel Pressure readings, actual and desired. To protect yourself, here are the tried and true methods: Remember, the root cause of ecoboost misfire is the condensate buildup from the intercooler. Engine misfires are serious. These are plastic components, so be careful that you dont break them. If you notice that it vibrates more than usual, it could be a sign that the engine is misfiring. If youre experiencing misfires, heres an easy way to determine whether the problem is with the spark plug or coil. Fuel related . I thank you for making my life so much easier I'm going forward finding my problem. Ford did an excellent job updating some of the engines weak points with the second generation engine. 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. Again, the 3.5 EcoBoost is an extremely reliable engine in general. 5. The 3.5 EcoBoost engine from the first generation is found in the following Ford and Lincoln models: Ford began offering the second-generation EcoBoost engine in select models in 2017. I don't know what Scan Tool you are using but FORScan is your best bet for Live Data on any Ford car. Ford addressed this issue with the second-generation 3.5 EcoBoost by utilizing both direct and port injection. I bet that your actual problem is the spark plugs. However, this problem still pops up from time to time in the Ford 3.5 Ecoboost engine upgrades. The Escape is a hot mess. The numbering of the cylinders on a Ford F150 starts from cylinder 1 on the front and goes backward. Display as a link instead, Manage Preferences - All Rights Reserved. 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. No PCM codes so I'm using the car to see if anything changes or codes appear. what could be the cause of car engine running and stopping on the road? Started Wednesday at 03:50 PM, Ford Owners Club Youll also want to inspect the spark plugs and ignition coils. Low fuel pressure is another thing that can cause misfires. Therefore, if your 4-cylinder engine misfires on one cylinder, it will sound like a 3-cylinder engine. Failure of any of these sensors can cause an incorrect air-fuel mixture to enter the engine, which can cause the engine to misfire. they then suggested that I replace all plugs and boots and get an induction flush. When the engine control module receives the data, it will determine if the problem is serious or not. TuningPro.co is owned and operated by 8020 Media. Although we adore the 3.5 EcoBoost, no engine is perfect. My Toyota corolla 2009 cylinder 2 & 3 is misfiring. Although the engine appears the same on my car there is no sensor on the low-pressure side fitted. More often than not, your engines computer will be able to detect bad spark plugs in your F150. Its a powerful engine with 355 to 647 hp and plenty of torque. Labor should cost less than $100. Ford 2.7 EcoBoost Engine Problems - Ricks Free Auto Repair Advice Please register or login to enable Dark Mode. My caddy 1.6 carb had still misfired after changing coil, boggy cords, plugs, distributor cap, rotor and some fuel lines. If the timing chain completely fails, additional damage to the 3.5 EcoBoost engines is possible. Ford 2.7 EcoBoost Spark Plug & Ignition Coil Symptoms. Otherwise, its worth noting that turbo engines can be a little more difficult to maintain. Line up the bolt hole in the ignition coil assembly with the corresponding hole in the top of the engine. Certain DI engines can even run their entire lives without any valve cleaning. That being said a few things to watch out for. 2: What fuel are you using? This is primarily a problem with first-generation engines. 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. data shows primarily cylinder five misfiring. Please register or login to enable Dark Mode. So I would start there and then continue troubleshooting from whatever code you get. Misfires can cause serious damage to your engines internal parts and the catalytic converter, which can be very costly to repair. 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. Up Next: Ford 1.5 EcoBoost Engine Problems: The 4 Most Common Problems. How to Fix Common 2013 Ford F150 Ecoboost Problems 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? Here are the 6 failures and what to look for. Simply because these issues are classified as common does not mean they affect a large percentage of 3.5 V6 engines. You may also notice that the engine does not sound like it used to, and that your car has reduced power and fuel efficiency. PDF TECHNICAL SERVICE BULLETIN 20- 3.5L EcoBoost - Cold Start Ticking Symptoms Of Damaged Or Leaking Intercooler. Turbocharged engines place a great deal of strain on the ignition system, owing to the incredibly high cylinder pressures. Remove the plug on the ignition coil of the cylinder youre working on. . Attacking no-code misfires | Vehicle Service Pros
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