MaKaVeLi

after i changed tha intake because ther was leak to both cylnder 5 and 6, so after that when i push tha gas the car wont give a full power, i dont know if its the fuel pump cause when the cylender 5 and 6 mis fire it also give me fuel pump error, any way i have this leak and i dont know what casue it



and help please !

Frostbitten

that oil coming out of the valvecover is strange. either that fitting is loose causing oil to seep through, or somehow the engine is blowing the oil out from there. Try tightening it or make sure its sealing to the valvecover. Your fuel it sounds like low fuel pressure or no fuel pressure. will it even idle? if it will you should check the fuel pressure. either find a gauge or use a predator/xcal. If its the fuel pressure then it could be either the fuel pump, fuel pump fuse, fpdm, a kink in the fuel lines, or the fuel rail pressure sensor is bad. This is assuming that nothing is wrong with the intake manifold.

MaKaVeLi

thanx man ! i did use my predator but there is no trouble code after i changed the intake manifold, althought it gave me this code before changing the intake: P1237 Fuel Pump Secondary circuit fault, along side with the cylinder 5 and 6 misfire

Frostbitten

you can check the fuel pressure with your predator. just use the datalog feature. it should be around 39-41psi at all times. you should be able to hear the fuel pump come on when you turn the ignition on. If you havent modified the fuel pump assembly, i would first check the fuse, fuel rail pressure sensor, and the fpdm. If either one of those things is bad, it will cause your fuel pump to not come on or work correctly. Make sure all the vaccum lines are hooked up right.