jchristman92 Posted January 19, 2021 Share Posted January 19, 2021 I took the subframe with engine out of a vehicle that was totaled and it was leaking pretty bad so i decided to reseal the engine involving timing cover, valve covers and oil pan. I replaced the pcv valve because of a puddle of oil behind the throttle body and it did seem like it did stick and before i removed the engine it ran great and smooth and i did a compression check on the front 3 cylinders and they all read about 225 psi. i just did spark plugs after the reseal and looked inside of the cylinders and some of them looked oily, could it be the pcv valve or is the engine bad, cylinder 4 through 6 had the 225 compression which i thought was great. Quote Link to comment Share on other sites More sharing options...
twintornados Posted January 19, 2021 Share Posted January 19, 2021 Seafoam Quote Link to comment Share on other sites More sharing options...
YT90SC Posted January 19, 2021 Share Posted January 19, 2021 (edited) Duratecs of that era tend to use oil as they age from a mix of blowby and issues with the separator for the PCV. If it isn't fouling plugs, run it. Edited January 19, 2021 by YT90SC Quote Link to comment Share on other sites More sharing options...
jchristman92 Posted February 6, 2021 Author Share Posted February 6, 2021 So I got the engine in and found out the fuel pump was bad also. So I put a fuel pump and filter and now it sounds like this. I know some people can get an idea of what to check by hearing it so here's a video and now it's hard starting 20210205_102631.mp4 Quote Link to comment Share on other sites More sharing options...
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