northern_nubie If youre running a tune, making mods, or driving the 3.5 EcoBoost hard, the lifespan of the ignition components can be significantly reduced. Starting at the PCM, centimetre by centimetre the loom was inspected for clues. Here are the 6 failures and what to look for. Good morning. Some F-150 owners have complained of a mysterious misfire on these engines. More precisely, it appears to affect primarily 3.5 EcoBoost engines manufactured between 2010 and 2014. The car has now been back an forward to a Ford main dealer over the last two weeks and they are stumped. However, you have some control over how well the twin turbo EcoBoost engine is maintained. Started February 26, 2015, By Fuel related misfires can be caused from not enough fuel. Started Wednesday at 03:50 PM, Ford Owners Club Then, go backwards to cylinders 2,3,4,5,6 on the driver's side. Kinda forgot the power the 3.5 eco boost had when it was running rightat least no cops were nearby lol. The truck is setting p0302 and p0305 under heavy acceleration. The 3.5 liter twin turbo V6 engine was then integrated into a variety of other Ford and Lincoln models over the next few years. plasticpat Here is a more detailed list of the most common cause of engine misfires: 1. Finally, when the timing chain stretches, it can throw off the ignition timing, resulting in drivability problems. Additionally, issues with the 3.5 EcoBoost timing chain guides, tensioner, and cam phasers occur. 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. Even if the repair is not covered under warranty, you may be able to negotiate a discount or other form of compensation with Ford. Received 31 Likes on 28 Posts. On Friday they proposed and fitted a new in tank fuel pump but still in improvement. 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. As we talked about earlier, the engine needs the right air-fuel mixture, spark, and compression to fire properly. 2. The Ford 3.5 EB strikes an excellent balance of power, torque, towing capacity, and efficiency. Type B detects a condition that is progressing over time. Started 3 hours ago, By Older cars use a distributor to distribute the spark to all the spark plugs, which are powered by an ignition coil. UPDATED: I have had an issue since I purchased the truck 10 months ago. 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. There are several misfire related trouble codes. Failed injectors arent very common on most modern car models, and because of this, youll want to check out the other possible causes first. Additionally, engines are prone to a variety of other issues that we are not discussing particularly as they age and mileage increases. As fuel poor pressure measurement and control was one of the key symptoms this was almost certainly the smoking gun. Although the engine appears the same on my car there is no sensor on the low-pressure side fitted. Here we will look at what you need to know about engine misfires. 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. Vacuum leaks are a common cause of an incorrect air-fuel mixture and are fairly easy to check, so you want to start there. The car wont rev up over 3000revs per min.could iit b a bad ignition coil. Time and the winter will tell. I did not find any evidence of carbon tracking on the plugs I removed. Ford 2.7 EcoBoost Now Problematic. By 5. I did the thottle position sensor reset procedure and that helped for about 2 days. Misfires can cause all sorts of problems, from reduced fuel efficiency to complete engine failure. Save my name, email, and website in this browser for the next time I comment. Line up the bolt hole in the ignition coil assembly with the corresponding hole in the top of the engine. I have a 2003 BMW 745i 7 series. Often, spark plugs are to blame, as their lifespan is significantly shorter than that of ignition coils. As for these Ford 3.5 EcoBoost, problems result from the engine using a direct injection fuel system and being twin turbo. I thought it was misfiring or driveline related. Contact Us - Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, 2006 F150 5.4 Sputtering - New thread CONDENSED. This is why you HAVE TO DRILL the 1/16" intercooler weep hole. 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. Hesitation everytime I get into the throttle. Best regards, Any thoughts, is the fiesta 1.0 ecoboost prone to wiring loom faults, ecu faults, multiplug pin corrosion, water getting places it shouldn't? The Escape is a hot mess. 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 ??? Then, you want to look for vacuum leaks and cylinder compression. Not sure how to test injectors. Get at least 20% off selected Ford parts on eBay View parts on eBay now! These are typically urgent issues that should be addressed immediately. The X is replaced with the cylinder number where the cylinder misfire occurs; for example P0301 is a cylinder 1 misfire. In order to get to the #5 and #6 spark plug, youll have to unplug the harness connector on the injection pump. John, thanks for your reply. The most common causes of engine misfires are bad ignition coils or failed spark plugs. The injectors are installed Under valve cover and to get to them the plenum and intake manifold needs to be removed. Keep your Ford F150 truck running strong. This oil eventually cakes onto the intake valves as it travels through the intake tract. 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. Ford 3.5L EcoBoost: Engine Failure - Tomorrows Technician An engine misfire is an event that occurs when one or more of the engines cylinders fail to ignite the air/fuel mixture during the combustion cycle. Turbo engines require more maintenance than the average engine. A misfiring engine can be a serious problem that should be fixed as soon as possible. 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. Timing chain replacement is likely to cost in the thousands of dollars range. Cookie Policy - This is why you HAVE TO DRILL the 1/16" intercooler weep hole. If I need to take the car back as is I will invest in the FORScan system suggested above. The wideband front O2 sensor should show a Current of 0 most of the time under constant or no Throttle openings. NOTE CYFS-12-YT4 replaced the original CYFS-12-YT3 spark plug. Under hard acceleration (i.e., boost) or at highway speeds, an intermittent stumble and misfire reportedly can occur during high humidity or damp conditions. 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. Had a slight misfire so I changed Spark Plugs and Coils. I had an F150 and an Escape both do exactly these same things. 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. Leave a comment and inform us! Therefore, the first thing you want to do when diagnosing misfires is to check the trouble codes with an OBD2 scanner. 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. Modern cars have good monitoring systems for all the different car sensors on the engine. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Its a powerful engine with 355 to 647 hp and plenty of torque. I will definetly come back for more updates on how to solve car problems. All Rights Reserved. Hi guys Ford 3.5 Ecoboost Misfire - Spark Plug Change - Blue Oval Trucks Dirty filters/Fuel filter clogging. On naturally aspirated engines, spark plugs frequently last over 70,000 miles, while ignition coils typically last about twice that. Low fuel pressure can be caused by a faulty fuel pressure regulator, a faulty fuel pump, or a clogged fuel filter. Earlier generations of gen 1 engines encountered issues with timing chain failure and carbon buildup. Connect a compression gauge to the spark plug holes and crank the engine several times. Anyone changed a PCM for a second hand unit, can ForScan do the setup and or reprograming? danielsan8787 The Ford 3.5 twin turbo engine, we believe, receives above-average reliability ratings. As a reminder, the Ford 1.6L timing belt should be serviced every ten years or 150,000 kilometers (whichever comes first). This includes misfires, power loss, and a rough idle, among other things. laumk7 Repair this yourself or, if you prefer, have it done by a repair shop. If you dont know when you last changed the spark plugs, you need to check your service manual and replace them if necessary. runs rough, no white smoke, no water in oil. 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. Any advice is welcomed. Need some advice here, I have a 2015 F150 3.5 Ecoboost. Automotive Performance, Tuning, & Modification. It also causes the plug to misfire. 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. The advantage of port injection is that fuel is washed over the intake ports and valves. Later when I handed it over to the main dealer they changed the plugs again but no improvement. Ford 2.7 EcoBoost Now Problematic Connect a fuel pressure gauge to the fuel rail and start the engine. Automotive Performance, Tuning, & Modification. Faulty coils and broken electric wires. That being said a few things to watch out for. This has a detection period of 1000 engine . Fortunately, a set of six Ford 3.5 spark plugs typically costs between $40 and $100, depending on the source. Read the manufacturer's instructions and set up the pump. Again, the method outlined above is an effective way to ascertain the source of the problem. It is important to start by reading the error codes to know where to start troubleshooting. New plugs areNGK Spark Plug SILZNAR8C7H (93593) same NGK part number as the originals. Here are some of the symptoms of a bad VCT solenoid: 1. Last thoughtI've still yet to test it towingneed to know whether I'll still have to play the game jumping between 4th and 3rd depending on the incline. Fuel related . Jiffy Lube Vs. Valvoline Oil Change: Differences & Which Is Better.
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