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3 pots high compression results any ideas folks?


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Did a compression test tonight and pots 1, 2 and 4 came out at 10, 10.5 and 11

pots 3,5 and 6 came out at 13, 14, 14.5 can anyone give some advice on this matter

I think that if it was the headgasket wouldnt it only be high on just one pot?

theres no water in the oil and shes running fine not useing too much oil.

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It's not only head gaskets that can cause uneven compression. Worn cylinder bores, piston rings and poorly seating valves can also give you differing results.

I'd be tempted to have a cylinder leakage test performed to see where your compression is escaping to.

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Cheers DevilDub

its been overheating but only when shes being thrashed as if the coolant system is being pressurised?

shes booked in for a leak down test on wed so maybe we find out whats wrong any ideas now you've got more info??

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Couple other things you can check for. After said thrashing check to see how hot the radiator is if at all, and also check to see if any of the cooling pipes are rock hard. This would tend to suggest a break in the head gasket between the cylinders and cooling system. Leakdown will easily trace this.

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