Ok so here we go. I bought this truck 3 years ago and I havent started working on it until recently. This truck suffers from a series of problems but I just want to get the engine squared away. I cannot keep this thing running. It has a very rough idle upon the start and it doest go away. The truck is loading up with fuel and it will not stay running for any amount of time. Ive tried adjusting the regulator and lowering pressure on the rail but no results. We have tested the map and it seems to be up to spec. The turbo is fine as well and we have cleaned out the cac on next to the intake. New plugs, wires, distributor cap and rotor, air filter and oil. Gas is standard 93. We found that the ECM is remanufactured and I think that it might have something to do. When we disconnect the different sensors it will not throw any codes. There was a intermitent code for 02 sensor but a new one was placed in it and its testing fine. Map sensor voltage is up to par and fuels system is clean. I need some help or ideas where to go from here. There are no leaks anywhere that can be seen on intake but there is a small knock coming from the passenger side head (lifter I assume). This thing is running rich and it will not stop its like injectors are stuck open. Please any suggestions let me know I will sing at your wedding if you help me fix this problem!
Sunday, February 26th, 2012 AT 11:39 PM