Two of the issues listed above may not even be considered issues. Well discuss some of the most common issues with the Ford 3.5 EcoBoost V6 in this article, as well as its overall reliability. Reinstall the ignition coils retaining bolt by hand in the clockwise direction to prevent it from becoming cross threaded. One of the conditions that is required to set the code is a fuel . Worst pressure condition in the cylinder. Issue Severity: SEVERE - Stop driving immediately. Parts cannon loaded and ready -- Customers paying -- Fire at will !! I need some direction with this one. 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 3.5 EB comes in two distinct generations, which we will discuss briefly below. 27 Jan 2018 00:24 - 28 Jan 2018 10:44 #17294. So, as its intermittent and clears after 5 or 6 miles I'm continuing to drive it hoping some new clues will appear, its done about 2k miles since the last trip to the garage. By Aug 11, 2020. in both cases, the engines were significantly under the mileage recommendation to replace the spark plugs. Ford did an excellent job updating some of the engines weak points with the second generation engine. I'd get rid of this truck if I could but the timing just isn't right. RELATED: 5 Signs of a Bad Intake Manifold Gasket (& Replacement Cost). Leakage and excessive fuel burn. Symptoms Of Damaged Or Leaking Intercooler. There is a gasket located between the cylinder head and the intake manifold called the intake manifold gasket. Need some advice here, I have a 2015 F150 3.5 Ecoboost. Hi my name is Victor I have a 07 Pontiac Grand Prix V6 I am getting a code low sufficiency threshold have changed wires plugs coils and it runs fine and when I put it under a load start start to run rough so what clean the injectors again it runs fine until I put under load what is the problem, I replaced both coils 8 spark plugs and wires still running bad checked my ekg valve it works motor still shakes and body as well could it be a faulty fuel injector I need help. After some research, there are problems with the CAC and many of the trucks left the factory with Mis-Gapped plugs. . Rough acceleration is a typical sign that your engine is misfiring. Fortunately, this is not a time-sensitive task that requires immediate attention, and you may not even want to do it at all. Acts like it doesn't know what gear it should be in. 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. Changed the coil packs, no improvement. Yeah the misfire is only on cylinder 4 according to the AP and about 2 weeks ago it began. Remove the bolt that holds the coil pack in place with a 8mm (5/16) socket. However, it is entirely possible that this is simply because the F-150 is the most popular model equipped with the EcoBoost engine. Faulty plugs. It suddenly lost power like it wasnt running on all 6-cylinders, and the check engine light was blinking. TuningPro.co is owned and operated by 8020 Media. If not, change them, 6: If all that fails then it could be a clogged injector or a coil is going down, FORScan: https://forscan.org/download.html, New style 'vLinker FS' lead for use with the latest version of FORScan: https://www.bmdiag.co.uk/forscan-diagnostic-cable-for-ford-vgate-vlinker-fs. What Are The Symptoms Of Engine Misfires? There is a Technical Service Bulletin (TSB 14-0180) for the 2011-2013 Ford F-150 that suggests that you check the spark plugs for carbon tracks, and replace the plugs and boots if carbon tracks are found. On the 2.7L EcoBoost expect to replace spark plugs at around 40,000 to 60,000 miles. 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. Spark plugs are gapped to .30 and SP-580. Avoid over tightening the new spark plugs to prevent from stripping the aluminum threads. As a result, spark plugs and ignition coils start bringing issues. 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. The garage thinks its running lean at light throttles as the fuel trim values are going high, hence the misfire or hesitation. Here's my top pick motor oil for the Ford EcoBoost cyclone engine. Compare the results with the manufacturers specifications, and if the compression is low on a cylinder, you need to inspect the engine parts such as the timing belt, piston rings, valves, or pistons. 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. Regards It can also be caused by fuel-related issues such as a faulty fuel injector or a bad fuel pump. Privacy Statement - If the timing chain completely fails, additional damage to the 3.5 EcoBoost engines is possible. but I don't feel or hear any misses . I bet that your actual problem is the spark plugs. Failed injectors arent very common on most modern car models, and because of this, youll want to check out the other possible causes first. While this is a common issue with the EcoBoost, it does not occur with every engine. No PCM codes so I'm using the car to see if anything changes or codes appear. 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. Truck ran pretty good even picked up about 1.5 mpg, then the last couple of weeks it has become a tired dog. With the hood popped, standing in front of the vehicle, looking at the engine the cylinder numbering starts at the front left (passenger . Any no improvement. Ford F150: Bad ECM Symptoms + Diagnosis | Drivetrain Resource Engine misfires can actually be quite difficult to diagnose even for us experts in the field. There Can Be Damage To Different Parts Of The Motor. At 96,000 Miles. I hope you enjoyed this article and now have the expertise to diagnose engine problems like misfires and fix the problem with your car yourself to save some money. 2017 Escape 2.0 Ecoboost misfire | 2013+ Ford Escape Forum Excess carbon build-up on the 3.5 EcoBoost intake valves and ports manifests itself in the following ways: The majority of these symptoms are caused by the primary symptom 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. Time and the winter will tell. This includes misfires, power loss, and a rough idle, among other things. Its best to diagnose and repair the issue as soon as possible. Replace oil cap. I have not noticed any slack in the joint. P0445 Code Meaning, Causes, Symptoms (& How to Fix it), 7 Reasons Your Engine Is Running Rich and How To Fix It, Car's Engine Burning Oil? Additionally, timing chain issues appear to be more prevalent on F-150 models than on others. You may also notice other performance issues, like slower acceleration than usual or a stalling engine while accelerating. I have had it in several times, with no results. Shudder fix additive can also help as stated above. Dave thanks for your reply and suggestions. Ford 3.5 Ecoboost Misfire - Spark Plug Change - Blue Oval Trucks This is why you HAVE TO DRILL the 1/16" intercooler weep hole. Low fuel pressure is another thing that can cause misfires. V8 engines have a completely different tone than a four-cylinder engine, for example. If a sensor is failing or a sensor detects that something is wrong with the engine, it sends the information to the engine control module. Engine Misfire - Meaning, Causes, Symptoms & How To Fix It - Mechanic Base More often than not, your engines computer will be able to detect bad spark plugs in your F150. Jan 23, 2021. ouguru said: 2011 F150 FX4 with 3.5L Ecoboost developed a severe misfire at 65k miles. In rare cases, it can also happen because of low engine compression. Those idiots told me I needed a new charge air cleaner, intercooler, possibly new turbochargers and whatever it was would be like $3000. NOTE CYFS-12-YT4 replaced the original CYFS-12-YT3 spark plug. Carbon build-up is primarily an issue with first-generation engines. Fortunately, a set of six Ford 3.5 spark plugs typically costs between $40 and $100, depending on the source. If it is too high or too low, you need to inspect the components of the fuel system such as the fuel pump, fuel filter, and fuel pressure regulator. Hesitation everytime I get into the throttle. I've been on other websites trying to find more info on what to do on my VW caddy 1988 model which I'm experiencing misfiring. Spin in the spark plug a few turns by hand in the clockwise direction to prevent it from becoming cross threaded. . Joined: Thu Mar 23, 2017 6:09 pm. Can a cam sensor make it miss fire on one cyl. Your previous content has been restored. Started February 26, 2015, By If your Scan Tool can give you access to Mode 6 Data then there may be some clues there. The car has run perfectly all summer but in the last couple of weeks the fault is back. . OEM COILS - Keep in mind no check engine light just a slight miss under light loads and typically above 60MPH (1200-1500 RPM) Didn't solve the problem, re did the process . Here is a more detailed list of the most common cause of engine misfires: The most common cause of an engine misfire is a bad or failing ignition coil. There is a red locking tab on the plug: Upload or insert images from URL. Misfire after cold start | Page 3 | 2015+ S550 Mustang Forum (GT By If the engine misfires in excess of 23% of the time (46 misfires per 200 engine revolutions) at low RPM or in excess of 5% at high RPM it will trigger the fault code under this condition. Ford 3.5L EcoBoost: Engine Failure - Tomorrows Technician That being said a few things to watch out for. This is why you HAVE TO DRILL the 1/16" intercooler weep hole. Remove the dipstick and place it on the clean rag to avoid contaminating dirt and debris. Jun 30, 2021. 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. Causes & How To Fix It. The pre-2017 3.5L EcoBoost engine had several issues ranging from engine misfires to timing chain issues, while the second-generation engine introduced in 2017 had improvements in timing components and fuel injection. It does sound like it is running lean, it's strange that there are not codes all the time. Ecoboost 1.0 - Difference Between 100Hp And 125Hp Version ? However, finding these vacuum leaks is often quite easy and we will talk about that further down in the article. This disturbs the air-fuel mixture, which may result in the 3.5 EB misfiring. . Additionally, Ford did an excellent job with the second-generation 3.5 EcoBoost in addressing some of the issues. 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. Birdzini 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 ??? So far Im very pleased with my eco as its made me grin when ever I squeeze the smile pedal and if Im not careful my tires or me wont be when replacing is needed. jsk I have looked at the video and that's exactly as I would expect to find it. I got my Polo 6 TSI 2010 Year model, im very suprisingly without any notice while driving multiples of warning light poped up on the dashboard namely ' ENGINE CHECK ,ABS, EPC, ESP and on a suden the idle of engine have changed, as I try to accelerate i feel engine like jerking , what could cause these and how will fix it??. 7. Update, car is back from the garage without a diagnosis. Magnus is the owner and main author of Mechanicbase. 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. Carbon build-up is simply a disadvantage of relying solely on direct injection. 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. Anyone changed a PCM for a second hand unit, can ForScan do the setup and or reprograming? If any of these things fail, it will not ignite the combustion chamber properly and a misfire will occur. random misfire and cyl 4 misfire. I am having same issue. Remove the ignition coil from that cylinder and replace it with one from a non-misfiring cylinder. A design defect allows coolant to leak into the cylinders of the 1.5L, 16L, and 2.0L EcoBoost engine. A set of ignition coils costs between $200 and $300. 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. Misfires Rough idle Stuttering / hesitation Power loss Check engine light (misfire codes) Prevent ignition coil failures As a reminder, the Ford 1.6L timing belt should be serviced every ten years or 150,000 kilometers (whichever comes first). This assists in removing oil deposits and preventing them from accumulating. However, it is a much simpler job than changing the spark plugs. In todays article, we will discuss the meaning of engine misfires and what possible issues can cause them. If your car engine is misfiring, it is important to find out the cause and fix it as soon as possible. 1. Speechless. You can post now and register later. Regardless, we would want to complete the job. Started February 5, 2013, By Parts of the ignition system such as spark plugs and ignition coils are also a disadvantage of turbocharging. . If the check engine light is on, there should be a trouble code stored that needs to be checked with an OBD2 scanner. 2.7 EcoBoost stumble on highway acceleration - F150 Forum Spark plugs were normal, except #1 as it was slightly oily/wet after cleaning with wire brush and reinstalling and restarting for about 10 minutes. Early EcoBoost engines were also known to catch on fire, leading to a 2012 recall and "stop driving" order from Ford. Ford also added port injection to the second-generation 3.5-liter V6 twin turbo engines. (6) Motorcraft SP-580 (CYFS-12-YT4) spark plugs. Every engine suffers from some degree of oil blow-by. Hi I have a 61 ford falcon 6 cyl has a miss fire under load new coil, plugs, wires points cond, dist, all cyls fire, My 206 puegoet starts up fine from cold drives 100 percent problem is when it gets hot will drive it when I switch it off and start it up get miss fire and loss of power so I have to switch it off and start it up after a few tries it's gets back to normal even though the car is hot.