Also, Ford has released new PCV parts and PCM calibrations to reduce the amount crankcase vapor ingested into the intake. The best advice is to use high-quality fuel. Removed the rocker cover and inspected the valve springs for breakages none found. Thought the worse but the pressure was holding so no leak down. These types of cleaners can damage the turbochargers’ bearings, seals and turbines. After compression check found no4 cylinder had low compression at around 165. But some DIY owners will use induction cleaners that are injected into the intake. The 3.5L has not had many issues with carbon build-up on the intake valves. If any tracking is present, replace all the plugs and boots. If you get a 3.5L EcoBoost in your shop with misfire code(s) P0300-0306, pull the plugs and coil boots and look for carbon tracks on the insulator of the plugs. Check out TSB 14-0194 for more information. When the chain is worn and stretched, the PCM detects the changes in camshaft position and sets code P0016 for crankshaft/camshaft correlation. Worn-out oil can damage the chain, guides and tensioner. If the driver pushes it past the recommended oil change interval, the first item to show the abuse is usually the timing chain. Items that could cause the misfires are either fuel loss, firing, or vacuum related. When the system re-primed itself, the misfires usually clear up. It is common to get random misfires, due to fuel loss from the system. Since the 3.5L EcoBoost is turbocharged, the oil is under extreme stress. houbmw-cm said: When removing the left valve cover, you need to remove the left fuel rail. TSB 13-8-10 covers 2011-2013 models with the 3.5L V6 and discusses how new calibrations can resolve a buck/jerk at steady cruise conditions with the transmission in sixth and lugging up grades at 1500-2000 RPM. If you get a customer in your shop complaining of a loss of power or stalling, check the PCM to make sure it has the latest calibration. There have been at least nine updates to change calibrations and operation software for the 2011 models with the 3.5 EcoBoost to address problems with the vacuum, ignition and shifting. This procedure can create a leak in the system. One solution that can be found online is to drill a 1/16” hole in the bottom of the intercooler to drain the condensation and even oil. Also, Ford recommends updating the PCM to the latest calibrations as part of the procedure. The full details can be found in TSB 13-8-1. Also, Ford updated some models with a new intercooler to prevent this problem. The freeze frame data for the misfire should indicate the engine was above 2500 rpm with a 100% load. This driveability concern was due condensation trapped in the intercooler.įord’s solution was to remove the air deflector from the top of the Intercooler and install it on the bottom to help vaporize the condensation trapped at the bottom of the intercooler.īefore you reposition the air deflector, you need to confirm the misfire condition was due to the condensation. 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.
0 Comments
Leave a Reply. |