I have checked the compression on cylinders 1 and 5 on Bank 1 and cylinder2 on Bank 2 of this V6 3.8L. My question is this: due to the fact that the readings for all three of the checked cylinders (the easiest to get to) are between 50 and 70 psi, is there a greater probability that either the timing chain has jumped/or it was assembled incorrectly OR that it has blown head gaskets/something else. I am about to head down the path of taking the timing chain cover off to check the timing mark alignment due to the fact that the low compression is on cylinders that are on both banks, but I thought I would get a Pro's input first.
History of this vehicle - supposedly the car ran, but when I got it thinking it was just a fuel pump, I found that there was a large amount of water in the tank and fuel rail. I have replaced the fuel pump, fuel injectors, fuel regulator, fuel rail and fuel filter. Additionally, I have checked that each cylinder is receiving spark.
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Monday, August 9th, 2010 AT 7:53 PM