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Showing results for tags 'compression'.
Hi guys I’ve done a compression test on my polo. 1.3 gk engine 1984 gl. it’s got a gk cam in it and gn inlet, exhaust and I ported/polished it on a rebuild a while back. It’s been running strong and fairly reliable since rebuild but I never did the bottom end. Cyl1 - 80psi cyl2 - 90 cyl3 - 90 cyl4 - 87 it’s pretty lumpy on idle but revs well otherwise. what’re your thoughts? I think the compression is too low. I could do a bottom end rebuild but I don’t think I can take anything off the gasket etc because it’s already only just cl
Hi, I think I may have an issue with the dredged exhaust vales leaking on my Polo 1.2 petrol 9N3, 1ith 186,000 on the clock. I have just completed a compression test and the figures obtained are as follows: Cylinder 1 - 230 & 243 psi Cylinder 2 - 210 & 220 psi Cylinder 3 - 200 & 205 psi I understand that there should be only a 10% difference between the highest and lowest figures and mine has 14% to 17% difference. The engine is running fine with the only ECU error of P0171 lean fuel trim, but only at idle with all sensors