Greetings from DownUnder. (E140TLENS,1992 140hp v4). Got the boat about 2 months ago. Didn't run for 15 years. Got it for a bargain. Re-dit lower unit because it wasn't pumping and there was water in lower gear unit. Didn't start at first. Wen't over fuel line and changed what I could. Got it to start but it was overheating. Ripped off cylinder heads and started cleaning.(Not too bad actually) Put everything back and it runs like an ostrich. Vro is removed and I premix. Everything is good BUT;
I used the same head gaskets again because they really still looked good. The engine also. Today I did a compression test and all 4 cylinders is exactly 80 psi.(They should at least differ a bit). When I got the boat the guy said all 4 cylinders was 150psi. Which could be right if you look at the condition of the outboard. The cylinder sleeves also looked very good when I had the head off. The only thing that I can think of is that I didn't torque it enough (30nm), my torque wrench is not calibrated or the gaskets is leaking. Because they all give exactly the same reading(exactly 80 psi ). Should I torque it a bit more or just get new gaskets. The thought of torquing it some more gives me cold sweats. They are on the expensive side + postage to Australia. If I should get new gaskets, can I just get the aftermarket ones. Engine sounds great though.
I used the same head gaskets again because they really still looked good. The engine also. Today I did a compression test and all 4 cylinders is exactly 80 psi.(They should at least differ a bit). When I got the boat the guy said all 4 cylinders was 150psi. Which could be right if you look at the condition of the outboard. The cylinder sleeves also looked very good when I had the head off. The only thing that I can think of is that I didn't torque it enough (30nm), my torque wrench is not calibrated or the gaskets is leaking. Because they all give exactly the same reading(exactly 80 psi ). Should I torque it a bit more or just get new gaskets. The thought of torquing it some more gives me cold sweats. They are on the expensive side + postage to Australia. If I should get new gaskets, can I just get the aftermarket ones. Engine sounds great though.