Thank you for explaining how "misfires" are detected by the camshaft position sensor detecting slight changes in engine speed. The most common causes of engine misfires are bad ignition coils or failed spark plugs. Additionally, the use of twin turbos provides an abundance of tuning potential for those looking to get the most out of their engines. Check battery terminals are properly clamped and that the earth lead between the engine and chassis is good. Dave thanks for your reply and suggestions. If this gasket leaks, it will draw air into the combustion chamber, causing the air-fuel mixture to become too lean, and this can cause misfires. Is Fords 3.5-liter EcoBoost engine dependable? Likes: 15. Codes P0089, P0087 and P2626 were showing but no engine check light. Its my first scan tool which has been useful but is limited by my knowledge and the small screen. Naturally, that engine receives some upgrades over the standard 3.5 EcoBoost to accommodate the increased power. Woww wow wow great article! 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. General discussion on 2009 - 2014 Ford F150 truck. Therefore, the first thing you want to do when diagnosing misfires is to check the trouble codes with an OBD2 scanner. How to Spot Carbon Buildup. Line up the bolt hole in the ignition coil assembly with the corresponding hole in the top of the engine. If not maintained, it could mean sending the car to the junkyard sooner . After some research, there are problems with the CAC and many of the trucks left the factory with Mis-Gapped plugs. or my ECU ? As for these Ford 3.5 EcoBoost, problems result from the engine using a direct injection fuel system and being twin turbo. Change the oil on time, use high-quality oils, and address issues as they arise. Keep your Ford F150 truck running strong. good article but didnt cover a p0300 with misfires on all cylinders on 1 bank of a v8. RELATED: 8 Causes of Low Compression in a Car Engine (& How to Fix). To find out if your engine has low compression, you need to do a compression test and compare the results to the manufacturers specifications. Also make sure that the correct viscosity of oil was put in as the wrong "weight" of oil can make the VVT malfunction. Misfires can cause serious damage to your engines internal parts and the catalytic converter, which can be very costly to repair. This messes the air-fuel mixture causing the Ecoboost to misfire on your Ford F150. but I don't feel or hear any misses . 3.5L EcoBoost Timing Chain Rattle Symptoms & Fixes, Ford Fuel Pump Driver Module Failure Symptoms & Solutions. If your vehicle idles roughly, stalls frequently, has a drop in engine power, stumbles frequently, has reduced gas mileage, or accelerates slowly, these are all signs your camshaft position sensor could be failing. If any of these things fail, it will not ignite the combustion chamber properly and a misfire will occur. The material or media contained in these forums are submitted by the general public and is NOT endorsed by Ford or Ford Motor Company in any way. The smaller twin turbochargers are quick to spool and deliver a significant amount of low- and mid-range torque. Jun 30, 2021. What Happens When You Put Too Much Oil in Your Car? Remove the engine oil filler cap, and remove the plastic engine cover by lifting up and pulling forward. Ford 2.7 EcoBoost Spark Plug & Ignition Coil Symptoms. Regardless, we would want to complete the job. Modern cars have good monitoring systems for all the different car sensors on the engine. Diagnosis: A cylinder 3 misfire can be caused by anything from faulty spark plugs to low engine . Condensation can build up and be trapped in the intercooler on certain F-150 models with the 3.5L EcoBoost V6. 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. This contributes to the prevention of carbon build-up, which we will discuss later in this article. 5 Best 2.0L EcoBoost Performance Upgrade Guide, technical service bulletin that can be seen here, 3.5L EcoBoost Timing Chain Rattle Symptoms & Fixes, Ford Fuel Pump Driver Module Failure Symptoms & Solutions, 2010-Present Ford S-Max, Galaxy, and Mondeo, Engine overheating (often triggering a P0217 engine code), Whistling, whining, or chirping noise coming from the engine, Engine builds no boost under acceleration. 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 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. Could it be a cv joint problem? This identifies the root cause as the Charge Air Cooler/CAC when it . The most common car sensors that cause an incorrect air-fuel mixture are the MAF sensor, the MAP sensor, the oxygen sensor, and the coolant temperature sensor. However, be very careful when doing this and have a fire extinguisher ready. 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? 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. However, it is a much simpler job than changing the spark plugs. Shops frequently charge between $400 and $600 for this service, so its not exactly inexpensive. I am debating on whether to go with another oem turbo or get an aftermarket higher performance turbo. Spark plugs should be replaced on a schedule for all car models, and not replacing them on time can cause fouled spark plugs, which can cause misfires. The engine started fine and has been driving perfectly for over a week now. You may or may not be able to monitor High and Low side Fuel Pressure readings, actual and desired. More often than not, your engines computer will be able to detect bad spark plugs in your F150. Copyright 2023 Mechanic Base. Remove the plug on the ignition coil of the cylinder you're working on. I don't know what Scan Tool you are using but FORScan is your best bet for Live Data on any Ford car. If you suspect that your engine is misfiring, it is important to take care of the problem as soon as possible. On the 2.7L EcoBoost expect to replace spark plugs at around 40,000 to 60,000 miles. This misfiring of the Ecoboost leads to rough idling, stuttering, and fault codes. What are your thoughts on the 3.5 EcoBoost? 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. Even if the repair is not covered under warranty, you may be able to negotiate a discount or other form of compensation with Ford. What else can I do??? Youll have to push down on the gray tab to get the plug to connect from the coil. I thank you for making my life so much easier I'm going forward finding my problem. I have had it in several times, with no results. I also attempted to clear the keep alive memory by disconnecting the battery for an hour, don't know if this worked but it did zero all the average fuel economy data. Matilda Magnetic build 2019 6.5' bed crew cab fx4 heavy tow.. Do Not Sell or Share My Personal Information. If you notice any of the signs or symptoms of a misfiring engine, get them checked out by a professional as soon as possible. 1. Additionally, issues with the 3.5 EcoBoost timing chain guides, tensioner, and cam phasers occur. 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. You can also use an EVAP smoke machine to easily find vacuum leaks, but these are often quite expensive and probably not something most people have in their garages. Copyright text 2021 by driveceladon.com. There Can Be Damage To Different Parts Of The Motor. . Tighten the bolt in the clockwise direction with the 8mm socket and a 1/4 drive ratchet until it is snug. The fuel injectors supply the combustion chamber with the correct amount of fuel for each cylinder, and there is usually a separate fuel injector for each cylinder. John, thanks for your reply. 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. 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. Simply because these issues are classified as common does not mean they affect a large percentage of 3.5 V6 engines. Its a simple and inexpensive repair. My Toyota corolla 2009 cylinder 2 & 3 is misfiring. Condensation in the Intercooler. 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. If you dont know when you last changed the spark plugs, you need to check your service manual and replace them if necessary. Here is a more detailed list of how to diagnose and fix engine misfires: Modern car engines have a system that monitors all the sensors in the car engine, and if there is something wrong with a sensor, it will store it as a trouble code in the engine control module. So I would start there and then continue troubleshooting from whatever code you get. Remove the ignition coil from that cylinder and replace it with one from a non-misfiring cylinder. Update, car is back from the garage without a diagnosis. Fuel related misfires can be caused from not enough fuel. If the timing chain completely fails, additional damage to the 3.5 EcoBoost engines is possible. pretty much the same story with the Escape (Kuga 2 US version with 2.0 TT eco boost) except I went straight to the plugs without paying a dealer $100 to diagnose it. Starting at the PCM, centimetre by centimetre the loom was inspected for clues. The upstream O2 sensor, HP fuel pump and fuel rail pressure sensor have been changed. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. There are several misfire related trouble codes. I'd get rid of this truck if I could but the timing just isn't right. I bet that your actual problem is the spark plugs. Damaged injecting tools. Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, 2006 F150 5.4 Sputtering - New thread CONDENSED. The Ford 3.5L EcoBoost engine can power several models, including the Ford F-150 and the Lincoln Navigator. The Ford 3.5 twin turbo engine, we believe, receives above-average reliability ratings. But with all the added power I'm experiencing, as well as the renewed tranny response, I have to figure that will all carry over to making towing easier. You can also open the hood of your car and watch the engine idle. 3. @GARY MASSEY Not too shabby in terms of longevity. Hesitation everytime I get into the throttle. Glad you found something that works. While timing chain issues are unlikely to be as prevalent as some may believe, they are something prospective owners should be aware of. Again, the 3.5 EcoBoost is an extremely reliable engine in general. Carbon build-up is simply a disadvantage of relying solely on direct injection. Replacing the timing chain and other critical components is not a simple or inexpensive task. We both feel that the the low range fuel pressure sensor reading a constant 5 volts is worth investigating, but as we can actually find a low pressure sensor (under the bonnet) we are none the wiser. Under hard acceleration (i.e., boost) or at highway speeds, an intermittent stumble and misfire reportedly can occur during high humidity or damp conditions. (Heres How To Fix it), 7 Best Spark Plugs Review & Buyers Guide, Car Losing Power When Accelerating? Any ideas out there? Cookie Policy - The 3.5 EB comes in two distinct generations, which we will discuss briefly below. Smoke Can Indicate Danger For You. I had a hard time describing what it was, but now this is the clearest description of . 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. I have a 2012 ford focus we just put a new ,used engine in it when I got it back the ck engine light was on we replaced the o2 sensor,then came the cylinder 1 misfire,changed out spark plug and coil still has the same code ??? Reinstall the injection pump cover, the engine cover, and the oil cap. Overly rich running engine. 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. A blown head gasket can cause low compression. Read more: 8 Symptoms of a Bad Fuel Injector (& Replacement Cost). As mentioned above, the ECM controls the engine timing, and air/fuel ratio. Ignition components can produce a wide variety of symptoms and drivability issues, so dont overlook simple spark plugs or coils. This revealed a short circuit to earth for one of the HP fuel rail sensor wires. laumk7 Maintain the Ford EcoBoost engine properly, and it will almost certainly reward you with a dependable, enjoyable driving experience. This is primarily a problem with first-generation engines. Carbon tracking is where the spark fires between the top of the plug and the base, across the ceramic shell. 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. I used a small screwdriver to press down on it as I slid the plug off. The carbon build-up causes uneven combustion, and it messes up the air-fuel mixture. Received 13 Likes on 13 Posts. 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. TuningPro.co is owned and operated by 8020 Media. The car has run perfectly all summer but in the last couple of weeks the fault is back. Leave a comment and inform us! Hi guys. Within about 5 minutes of leaving the pump the engine was struggling. Not sure how to test injectors. Get at least 20% off selected Ford parts on eBay View parts on eBay now! This can lead to a variety of engine performance issues and can even lead to serious engine damage if left untreated. If the engine speed increases, it means there is a leak and the engine is injecting the flammable spray. However, numerous other factors can cause rattle. Please register or login to enable Dark Mode. 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. Finally, when the timing chain stretches, it can throw off the ignition timing, resulting in drivability problems. Spark plugs for stock 3.5 EcoBoost engines will likely need to be replaced every 40,000 to 60,000 miles. . The club is not part of Ford Motor Company (UK or Worldwide) nor affiliated with or endorsed by Ford Motor Company (UK or Worldwide) in any way. My 1997 Sebring run good , as long as I stay under 65 . 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. Additionally, Ford redesigned the timing chain in response to concerns about the previous designs reliability. This oil eventually cakes onto the intake valves as it travels through the intake tract. Started February 20, By Any no improvement. My problem is, that it starts shaking when I accelerate to a certain speed. Had a slight misfire so I changed Spark Plugs and Coils. For complete cylinder combustion to occur, the engine needs three important things, and that is the correct air/fuel mixture, compression, and spark. Its critical to establish this for a reason. By If you "tune" this engine expect to replace spark plugs every 10,000 miles. However, using PI has a few additional benefits, most notably assisting in the prevention of carbon build-up. Low Engine Compression. Ford did an excellent job updating some of the engines weak points with the second generation engine. Read more: Low Fuel Pressure Symptoms, Causes (& How To Fix it). Low fuel pressure is another thing that can cause misfires. Getting good spark. Acts like it doesn't know what gear it should be in. However, it depends on how serious the fault is and what specific repairs need to be made. (6) Motorcraft SP-580 (CYFS-12-YT4) spark plugs. Terms of Service - If you do this, and change spark plugs every 30k miles, you will never have a misfire ever again. Ford enhanced the component before redesigning it for the second generation 3.5L twin turbo V6. random misfire and cyl 4 misfire. The dielectric grease will help seal out any moisture, dust or debris and ensure a reliable electrical connection. However, it is entirely possible that this is simply because the F-150 is the most popular model equipped with the EcoBoost engine. Remove the insulated cover over the injection pump to get to spark plugs # 5, and #6. jsk The next thing you want to check is the fuel pressure. Due to the high turbo boost pressures, spark plugs and ignition coils are subjected to significant abuse. This has a detection period of 1000 engine . Having said that, well delve deeper into these 3.5 EcoBoost issues below. Discuss all things maintenance here. Rough acceleration is a typical sign that your engine is misfiring. Try better fuel, see if it goes away. Symptoms The signs of a leaking turbocharger system start with a lack of power or random misfires. . Some F-150 owners have complained of a mysterious misfire on these engines. To missmy06 I havent seen a positive post out of you yet and Im sure any dealership would be happy to trade in your current truck for another 06 and down and probably the finances would not change so go for it. Remove the insulated cover over the injection pump to get to spark plugs # 5, and #6. So far I filled the the tank with premium fuel and added an injector cleaner, no change after 100 miles. Before we begin, lets jot down a few quick notes. Low fuel pressure can be caused by a faulty fuel pressure regulator, a faulty fuel pump, or a clogged fuel filter. If you get a vehicle in that is not generating enough boost, don't automatically assume it is the . Carbon deposits accumulate over time and obstruct airflow into the cylinders. Fuel related misfires can be caused from too much fuel. Engine misfires are serious. Hi all, my 1.0 ecoboost has recently started to misfire or hesitate under light throttles. Thanks for the great information passed on. I thought it was misfiring or driveline related. Turbos lead to high cylinder pressures, which in return stress the entire ignition. Connect a fuel pressure gauge to the fuel rail and start the engine. Checked all the ground connections I could find, they all looked good. READ MORE: 6 Symptoms of a Bad Ignition Coil (& Replacement Cost). Parts cannon loaded and ready -- Customers paying -- Fire at will !! Glenn hastie Ryan jones Anyone know what thelow range fuel pressure sensor reading 5 volts is telling us? Symptoms of 2.0L EcoBoost Coolant Intrusion. Display as a link instead, Well discuss some of the most common issues with the Ford 3.5 EcoBoost V6 in this article, as well as its overall reliability. READ MORE: 15 Types of Car Sensors (& What They Do). As we talked about earlier, the engine needs the right air-fuel mixture, spark, and compression to fire properly. Manage Preferences - Remember, the root cause of ecoboost misfire is the condensate buildup from the intercooler. I've pulled the injectors and sent them for cleaning and testing, will report back results. It also causes the plug to misfire. cheaper than replacing the valve? In fact, nuzzle 2 & 3 does not bring up any sign it is OK when removed from the plug head to the nuzzle. An old trick that mechanics often use on car engines with separate ignition coils is to switch the spark plug and ignition coil to another cylinder. Good morning. If your Scan Tool can give you access to Mode 6 Data then there may be some clues there. Code says multiple misfire's . May 9, 2021. Leakage and excessive fuel burn. Posts: 3. 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. The injectors are installed Under valve cover and to get to them the plenum and intake manifold needs to be removed. Spark Plugs And Ignition Coils Issues. Yes. The dip is so fast the computed pressure in kPa doesn't mirror the raw voltage, but both their trends look noisy. 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. I would like to congratulate you on the simple way of explaining this article on misfire troubleshooting. With the retaining the ignition coil plug unplugged and the retaining bolt removed, you can now pull the coil straight out of the hole.
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