VW Polo 1.2, 53 reg - Compression test results

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Sun 18 Jan 2015 11:24
VW Polo 1.2, 53 reg - Compression test results - ulysses

Hi

I've had some probs with my 3-cylinder Polo running rough and using up oil but not leaking oil. I took it to VW who said it soots up one spark plug straight away and needs a new engine because the cylinder's probably gone.

I did some research myself and found that sometimes exhaust valves go on these polos and was advised to get a compression test, cylinder leakage test and balance check. I took it to my local garage and he did a compression check and said there was no loss of compression across the cylinders, which I thought sounds good but he said it still meant there could be a burnt cylinder. I said couldn't it still be the exhaust valves? and he said definitely not. He didn't offer any other tests.

What do you think, anyone?

Cheers!

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Sun 18 Jan 2015 12:00
VW Polo 1.2, 53 reg - Compression test results - elekie&a/c doctor

This is probably the worst engine ever to come out of the VW factory.Problems with timing chains ,cylinder compressions worn valve guides etc etc. A compression test may show no fault with engine not running,but these most certainly suffer with burnt valves and worn valve guides and valve seats .VWs answer is a revised cylinder head and a software upgrade to the engine control system.Not much change out of £1500 ,I'm afraid.At this age,probably not worth fixing.

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Sun 18 Jan 2015 12:04
VW Polo 1.2, 53 reg - Compression test results - Railroad.
If the engine is burning oil it can only really go one of two ways. Either up past the valve guides or down past the piston rings. It's very difficult to establish which without doing some dismantling. In either case though oil is probably fouling the spark plugs which would also be a cause of poor running, as well as oil in the combustion chamber. If you have worn piston rings then I'm afraid a proper cure will well exceed the value of your car, although you could try an oil additive to help improve it.
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Sun 18 Jan 2015 12:40
VW Polo 1.2, 53 reg - Compression test results - ulysses

OK so compression test normal does not mean cylinder is ok?

Thanks guys

Sorry it's a 52 reg, my typo

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Sun 18 Jan 2015 12:41
VW Polo 1.2, 53 reg - Compression test results - ulysses

And engine was running on the test.

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