Quick fix for worn cylinder bores. This is like a dry/wet compression test (also called a leak-down or leak-by test) usually carried out using regular engine oil. By using RESTORE oil in place of the regular engine oil you can repair the bores at the same time. Try dividing a litre can of RESTORE down the empty spark plug holes (or glow plug holes on a diesel) and turn the engine over a few times before replacing the plugs and firing it up. It will smoke for a while then the compression should improve across all the cylinders. It is worth a try - doesn't work all the time - depends on how bad the bores are. If one cylinder compression doesn't lift on the dry/wet leak-down test then you can assume the problem is a burnt valve or valve seat. In this case the cylinder head must come off.
Two stroke quick repair. This is the same way we cure worn two stroke cylinder bores quickly. Pour approximately 100ml down each empty spark plug hole and allow to drain down and settle the CSL particles down around the piston rings. This is just the same as doing a dry/wet compression test - any mechanic knows how to do this. Then use the starter to turn the engine over a few times before replacing the spark plugs and starting the engine. It will smoke for a while then hopefully it will cure the compression leakages and improve emissions and power.
Quick fix for worn cylinder bores.
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17 November 2008
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