To be fair to the Ford 5.0 Coyote engine, we believe the 3.5 EcoBoost is a clear choice if offered. CursedBones The plugs should be fine, then. Before delving into 3.5 EcoBoost problems, its necessary to establish some context. You may also consider simply replacing the spark plugs. This disturbs the air-fuel mixture, which may result in the 3.5 EB misfiring. Dirty filters/Fuel filter clogging. In some cases, it can also lead to dangerous situations where the car stalls and becomes difficult to steer due to the loss of power steering. 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. That being said a few things to watch out for. To protect yourself, here are the tried and true methods: Remember, the root cause of ecoboost misfire is the condensate buildup from the intercooler. As a reminder, the Ford 1.6L timing belt should be serviced every ten years or 150,000 kilometers (whichever comes first). The car has now been back an forward to a Ford main dealer over the last two weeks and they are stumped. Parts of the ignition system such as spark plugs and ignition coils are also a disadvantage of turbocharging. Hello from Denmark .I have a Audi A6 C4 2.8 ACK engine ,somtime i lose Ignition on one cylinde,i have change the spark plugs,ignition coil and the spark plugs wires.when i pull the spark plugs wires out from the spark plug next to the one that dont work it comes back one ..and all 6 cylindre works fine .then i can take the car for a spin and the same thing happento i pull out the spark plugs wires next to the bad one ..and its on the same cylinder every time ..is it a bad injection valve ? Here's my top pick motor oil for the Ford EcoBoost cyclone engine. Here is a more detailed list of the most common cause of engine misfires: 1. Fuel Injectors Can Get Clogged. I've pulled the injectors and sent them for cleaning and testing, will report back results. Thanks for the great information passed on. in both cases, the engines were significantly under the mileage recommendation to replace the spark plugs. Has been a great explanation about the theme. Ford 2.7 EcoBoost Now Problematic. jsk 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. Line up the bolt hole in the ignition coil assembly with the corresponding hole in the top of the engine. Otherwise, its worth noting that turbo engines can be a little more difficult to maintain. However, because carbon build-up occurs over time, it is frequently difficult to detect. It is, however, inherent in owning a twin turbo, direct injected engine. For example, if you see a trouble code like P0300 or P030X, it means that the ECM is detecting a misfire on a specific cylinder, and you may want to start checking the spark plug or ignition coil on that cylinder. It is one of the variables over which we have no control. Due to the high turbo boost pressures, spark plugs and ignition coils are subjected to significant abuse. Had a slight misfire so I changed Spark Plugs and Coils. engine may exhibit various engine misfire symptoms accompanied by diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 stored in the . 3. What Are The Symptoms Of Engine Misfires? Low fuel pressure causes less fuel to enter the engines combustion chambers, resulting in a lean air-fuel mixture that can cause misfires on all cylinders. 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. The majority of 3.5L V6 EcoBoost engines should have no significant issues reaching 200,000 miles or beyond. FORScan can access Mode 6 but I don't know what TID's are available for your car. 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. You can check for vacuum leaks by gently spraying a flammable spray around the engines intake manifold while the engine is idling. As fuel poor pressure measurement and control was one of the key symptoms this was almost certainly the smoking gun. P0303 definition: Cylinder 3 misfire detected. If the engine speed increases, it means there is a leak and the engine is injecting the flammable spray. 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:. This oil eventually cakes onto the intake valves as it travels through the intake tract. Received 31 Likes on 28 Posts. Automotive Performance, Tuning, & Modification. If I need to take the car back as is I will invest in the FORScan system suggested above. However, Ford pioneered the use of turbochargers, direct injection, and variable valve timing. Spin in the spark plug a few turns by hand in the clockwise direction to prevent it from becoming cross threaded. Jan 23, 2021. ouguru said: 2011 F150 FX4 with 3.5L Ecoboost developed a severe misfire at 65k miles. Ford introduced the 3.5-liter EcoBoost engine in the Lincoln MKS, MKT, Ford Flex, and Taurus SHO in 2010. READ MORE: 6 Symptoms of a Bad Ignition Coil (& Replacement Cost). With the hood popped, standing in front of the vehicle, looking at the engine the cylinder numbering starts at the front left (passenger . Learn more here: How to find a Vacuum Leak & How to Fix It (8 Easy Steps). The carbon deposits can cause un-even amounts of air to enter to cylinders. Its a simple and inexpensive repair. You cannot paste images directly. Update, car is back from the garage without a diagnosis. I need some direction with this one. 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). Often, it is simply normal wear and tear, but early problems are possible. There is a red locking tab on the plug: Slide the red tab back to unlock the plug. Ford 2.7 EcoBoost Spark Plug & Ignition Coil Symptoms. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. I'd get rid of this truck if I could but the timing just isn't right. Symptoms of 2.0L EcoBoost Coolant Intrusion. Your previous content has been restored. Certain DI engines can even run their entire lives without any valve cleaning. There is a red locking tab on the plug: If any of these things fail, it will not ignite the combustion chamber properly and a misfire will occur. However, it depends on how serious the fault is and what specific repairs need to be made. Additionally, the 3.5 EcoBoost may generate the P0016 fault code, which will illuminate the check engine light. Every engine suffers from some degree of oil blow-by. The carbon build-up causes uneven combustion, and it messes up the air-fuel mixture. Save my name, email, and website in this browser for the next time I comment. 00:00 / 00:00. Its critical to establish this for a reason. However, the ignition components on the 3.5 twin turbo EcoBoost engine are likely to wear out much more quickly. Of course, the reliability of each 3.5 V6 engine is partially determined by luck of the draw. https://www.youtube.com/watch?v=0J83RZi3eCE, Hi thanks for your reply. Terms of Service - On naturally aspirated engines, spark plugs frequently last over 70,000 miles, while ignition coils typically last about twice that. Turbo engines do require some additional maintenance, but we believe it is worthwhile in the long run. This is primarily a problem with first-generation engines. 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. As mentioned above, the ECM controls the engine timing, and air/fuel ratio. Monitoring live data, fuel trims and control status shows the system in closed loop control, then when the hesitation misfire occurs the short term trim goes very high, 20+. Maintain the Ford EcoBoost engine properly, and it will almost certainly reward you with a dependable, enjoyable driving experience. Ford also added port injection to the second-generation 3.5-liter V6 twin turbo engines. If you do this, and change spark plugs every 30k miles, you will never have a misfire ever again. The upstream O2 sensor, HP fuel pump and fuel rail pressure sensor have been changed. In the case of a misfire a P0300 (random or multiple cylinder misfire), or specific cylinder P0301-P0306 should have triggered. You may also notice that the engine does not sound like it used to, and that your car has reduced power and fuel efficiency. We have both independently looked for a low pressure fuel sensor but can't find one, other fords have low pressure sensors near the inlet to the HP fuel pump but this car only has a fuel pressure damper. Make sure that the oil change did not overfill or underfill. Older cars use a distributor to distribute the spark to all the spark plugs, which are powered by an ignition coil. 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. Continuing to drive with a misfiring engine can cause serious damage to your cars engine. Hesitation everytime I get into the throttle. To refer to spark plugs and ignition coils as a issue is probably not accurate. 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. Although most modern cars use an electric fuel pressure sensor, youll want to confirm the results with a manual fuel pressure gauge, because an electronic sensor can fail. It can also seriously damage your engine. If the check engine light is on, there should be a trouble code stored that needs to be checked with an OBD2 scanner. Additionally, the use of twin turbos provides an abundance of tuning potential for those looking to get the most out of their engines. The Ford 3.5 EB strikes an excellent balance of power, torque, towing capacity, and efficiency. 3.5L EcoBoost Timing Chain Rattle Symptoms & Fixes, Ford Fuel Pump Driver Module Failure Symptoms & Solutions. 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. Started Thursday at 09:49 AM, By 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. Additionally, issues with the 3.5 EcoBoost timing chain guides, tensioner, and cam phasers occur. If you know a little about cars, youve probably noticed a difference in sounds from different engines. By understanding the causes, symptoms, and how to fix it, you can keep your car running smoothly and avoid expensive repair costs. 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. 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 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. This detects failures over a period of 200 revolutions. MAF and air filter look to be clean and dry. 4) Poor Engine Performance. 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. 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. Started 3 hours ago, By 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. (Heres How To Fix it), 7 Best Spark Plugs Review & Buyers Guide, Car Losing Power When Accelerating? 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. Up Next: Ford 1.5 EcoBoost Engine Problems: The 4 Most Common Problems. Checked all the ground connections I could find, they all looked good. Another subject well delve into. There are several misfire related trouble codes. Advertising - I have a different engine to your one but for comparison my Low side pressure is normally around 400-450 Kpa. Rotate the ignition coil back and forth a few times to help spread the dielectric grease. The smaller twin turbochargers are quick to spool and deliver a significant amount of low- and mid-range torque. This includes misfires, power loss, and a rough idle, among other things. I really appreciate you, thx for sharing that with us!

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