Spark plugs for stock 3.5 EcoBoost engines will likely need to be replaced every 40,000 to 60,000 miles. It gains 375-450 horsepower in the majority of models. 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. Pennzoil vs. Mobil 1 Oil: Differences & Which Is Better? Therefore, the first thing you want to do when diagnosing misfires is to check the trouble codes with an OBD2 scanner. This has a detection period of 1000 engine . The plugs have been used for no more the 2k miles. 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. Codes P0089, P0087 and P2626 were showing but no engine check light. Tighten the bolt in the clockwise direction with the 8mm socket and a 1/4 drive ratchet until it is snug. Additionally, while youre in there, consider replacing a few other small items. That being said a few things to watch out for. A set of ignition coils costs between $200 and $300. Several of the most frequently encountered issues with the Ford 3.5 EcoBoost engine include the following: As mentioned previously, the top two issues primarily affect the first-generation 3.5 EcoBoost engine. by Aungsty Thu Mar 23, 2017 6:38 pm. Reason for update: update the vehicle model years affected and production fix date Model: Ford 2017-2020 F-150 Engine: 3.5L EcoBoost 2018-2020 Expedition Lincoln 2018-2020 Navigator Summary Slide the electrical connector straight back into the socket until it clicks securely into place. Ford F-150 Misfire Symptoms. However, it depends on how serious the fault is and what specific repairs need to be made. If you cant find the issue elsewhere, its definitely worth taking a look at your fuel injectors. You can either get one yourself, or go to a mechanic and borrow their diagnostic tool to read the trouble codes from the ECM. If your VVT solenoid is experiencing issue due to a faulty oil control valve, you may notice a reduction in engine performance, as the VVT system may not be able to optimize the engine for peak power generation. they then suggested that I replace all plugs and boots and get an induction flush. In rare cases, it can also happen because of low engine compression. There is a red locking tab on the plug: Slide the red tab back to unlock the plug. Fuel Injectors Can Get Clogged. Started 8 hours ago, By Learn more here: How to find a Vacuum Leak & How to Fix It (8 Easy Steps). The plugs should be fine, then. Yes my car misfire I check the plugs is good bt is still misfire wht can be the problem I already do vavle grainig also it dus not working. The engine misfires, resulting in rough idling, stuttering, and fault codes. Started 2 hours ago, By Were the loom turns behind the engine there is a metal bracket which supports the connectors to the two oxygen sensors. Apply some dielectric grease to the opening in the rubber dust boot at the bottom of the ignition coil. Make sure that the oil change did not overfill or underfill. I thought it was misfiring or driveline related. Remember, the root cause of ecoboost misfire is the condensate buildup from the intercooler. I have a different engine to your one but for comparison my Low side pressure is normally around 400-450 Kpa. The car has now been back an forward to a Ford main dealer over the last two weeks and they are stumped. I did not find any evidence of carbon tracking on the plugs I removed. So far I filled the the tank with premium fuel and added an injector cleaner, no change after 100 miles. An engine with a bad ECM will often run rough and misfire. If misfires are occurring randomly, the check engine light may remain on. On naturally aspirated engines, spark plugs frequently last over 70,000 miles, while ignition coils typically last about twice that. Had the DTC read as P0301 (#1 cylinder misfire) and went to my local Ford dealer, bringing a copy of Ford TSB 12-10-19. According to . 036 inch, the old ones were less than the specification gap. Vacuum leaks are a common cause of an incorrect air-fuel mixture and are fairly easy to check, so you want to start there. Like you I thought spark plugs and changed them early on but sadly no improvement. Started August 19, 2022, By Yeah the misfire is only on cylinder 4 according to the AP and about 2 weeks ago it began. If you are installing brand new plugs, tighten them until you feel the new crush washer collapse. 7. Yes it sounds like lean mixture caused by either low fuel pressure or vacuum/boost leak. Received 13 Likes on 13 Posts. Started 4 hours ago, By Automotive Performance, Tuning, & Modification. in both cases, the engines were significantly under the mileage recommendation to replace the spark plugs. Two of the issues listed above may not even be considered issues. Did compression test and cylinders were 150, 150, 149, 149. My 1997 Sebring run good , as long as I stay under 65 . I changed my plugs and gapped them to the .028 and replaced the boots about a month ago. Fuel related misfires can be caused from not enough fuel. Line up the bolt hole in the ignition coil assembly with the corresponding hole in the top of the engine. P0303 definition: Cylinder 3 misfire detected. Ford introduced the 3.5-liter EcoBoost engine in the Lincoln MKS, MKT, Ford Flex, and Taurus SHO in 2010. MechEng, (6) Motorcraft SP-580 (CYFS-12-YT4) spark plugs. Determine which cylinder(s) is misfiring by inspecting the fault codes. Bad Ignition Coil. 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. Remove the plug on the ignition coil of the cylinder youre working on. Failure of any of these sensors can cause an incorrect air-fuel mixture to enter the engine, which can cause the engine to misfire. 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. Remove the insulated cover over the injection pump to get to spark plugs # 5, and #6. 5. Here we will look at what you need to know about engine misfires. The dip is so fast the computed pressure in kPa doesn't mirror the raw voltage, but both their trends look noisy. To find out if your engine has low compression, you need to do a compression test and compare the results to the manufacturers specifications. This is what causes the misfire. The 3.5 EcoBoost engine from the first generation utilizes only direct injection (DI), which means fuel is sprayed directly into the cylinders. On top of this, folks have to worry about fuel in the oil, and the cold start rattle (failed cam phasers that then stretch the timing chain). 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. Additionally, they address a few reliability concerns, making the Ford 3.5 twin turbo engine from the second generation even more reliable. Labor should cost less than $100. Not too shabby in terms of longevity. SMaxJohnni If you have a misfire trouble code on a specific cylinder, youll want to start by looking at the spark plugs and ignition coil on that cylinder. Open your hood and allow the engine to cool down. There are also many vacuum lines on the intake manifold that can leak, giving the same symptoms as a bad intake manifold gasket. Hesitation everytime I get into the throttle. Low fuel pressure is another thing that can cause misfires. 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. I have a 2003 BMW 745i 7 series. Manage Preferences - The updates aid in the support of increased power and torque. 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. Additionally, the use of twin turbos provides an abundance of tuning potential for those looking to get the most out of their engines. Is it in the fuel tank as part of the pump module? So the car in now at a local garage and they are struggling as well. In this video we show you how easy it can be to diagnose a misfire on a modern engine with the right tools.Latest Ford Parts:Ignition Coil (2011-2016)-https:. Replacing the timing chain and other critical components is not a simple or inexpensive task. Only history I have is the truck has had all six ignition coils replaced . In any case, the issue at hand is one of timing chain stretching. 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. Verified plugs and wires by swapping #1 with #3. Here's my top pick motor oil for the Ford EcoBoost cyclone engine. 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. More precisely, it appears to affect primarily 3.5 EcoBoost engines manufactured between 2010 and 2014. The X is replaced with the cylinder number where the cylinder misfire occurs; for example P0301 is a cylinder 1 misfire. This identifies the root cause as the Charge Air Cooler/CAC when it . If the misfire persists after installing the new cylinder, youve identified the source of the problem. Car wont move after CV Joint replacement. Their proposal is now a wiring loom or PCM, the first cost a lot in labour and the second a lot in parts and no guarantees. There are several misfire related trouble codes. random misfire and cyl 4 misfire. 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. While the 3.5 EcoBoost is an excellent engine in general, no engine is perfect, and this is true here. 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 second most common cause of a misfiring engine is bad or failing spark plugs. Then, go backwards to cylinders 2,3,4,5,6 on the driver's side. Type B detects a condition that is progressing over time. Terms of Service - Change the oil on time, use high-quality oils, and address issues as they arise. Dirty filters/Fuel filter clogging. This is what causes the misfire. This can lead to a variety of engine performance issues and can even lead to serious engine damage if left untreated. This makes the 3.5 EB an excellent engine for towing and fun around town without requiring full use of the engines RPM range. Generally, the most common F150 PCM failure symptoms include: inability to connect diagnostic scan tool, check engine light illumination, rough or even no start, low gas mileage, failed emissions test, engine stalling, difficult shifting, getting PCM-related . Walnut blasting should be performed every 70,000 to 100,000 miles as preventative maintenance. However, you have some control over how well the twin turbo EcoBoost engine is maintained. I did the thottle position sensor reset procedure and that helped for about 2 days. FORScan can access Mode 6 but I don't know what TID's are available for your car. You may or may not be able to monitor High and Low side Fuel Pressure readings, actual and desired. Birdzini A misfiring engine can be a serious problem that should be fixed as soon as possible. . Ignition coils have a life expectancy of 25,000 miles if were lucky. Another subject well delve into. 3: Clean MAF, ensure air cleaner is clean and not damp, 4: Turbo bypass valve is weak and can leak, fit a turbosmart replacement (cheaper and more durable than OEM), 5: Have the plugs been changed? Was told it might be the fuel sending unit . Dave thanks for your reply and suggestions. Rather than that, they are a few of the most frequently encountered issues when something goes wrong. More often than not, your engines computer will be able to detect bad spark plugs in your F150. Shudder fix additive can also help as stated above. The loom runs below this bracket and in my case there was a rusty stain on the loom. Condensation in the Intercooler. This contributes to the prevention of carbon build-up, which we will discuss later in this article. . This is not to say that the first generation engine is a bad engine by any means. NQbbe It also causes the plug to misfire. 165k miles #1 cyl misfire code. 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. Matilda Magnetic build 2019 6.5' bed crew cab fx4 heavy tow.. Do Not Sell or Share My Personal Information. Ford has also issued bulletins, indicating that they are fully aware of the timing chain issues. Terms of Service - These are the most common symptoms of 2.0L EcoBoost coolant intrusion, but not all of them. TuningPro.co is owned and operated by 8020 Media. Also make sure that the correct viscosity of oil was put in as the wrong "weight" of oil can make the VVT malfunction. Changed the crank sensor the other day as a precaution as the last two cars I have owned have needed crank sensors in mid to later life. Ford EcoBoost engines deliver exceptional performance, torque, fuel economy, and towing capacity. what could be the cause of car engine running and stopping on the road? This happens fairly quickly, say 5 seconds per event and maybe 5 events during a warm up cycle. Now the symptoms are less noticeable there are no codes. cheaper than replacing the valve? Keep your Ford F150 truck running strong. I knew my Metro had a burnt valve and low compression, but I would not call that a misfire, since the fuel is burning fine, just leaking into the exhaust and delivering less power. Another frequent symptom of carbon buildup on the Ford 3.5L turbo engine is decreased power. So I would start there and then continue troubleshooting from whatever code you get. The carbon build-up causes uneven combustion, and it messes up the air-fuel mixture. Each of the wires on the HP fuel rail sensor were back probed in turn and with the multi meter set to ohms the loom damage area was probed with the other lead.