Vauxhall Corsa C 1.0 z10xe 51 reg - intake air leak

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Mon 20 Oct 2014 20:29
Vauxhall Corsa C 1.0 z10xe 51 reg - intake air leak - busdriver1970

Hi all

I seem to have a problem with my sons corsa c 1.0cc, engine was running ok before I started work, just a bad timing chain rattle and signs of head gasket gone. cylinder head removed had it skimmed and pressure tested rebuilt engine with new gaskets and timing chain, on starting it run poorly with a sound of air being sucked in from inlet manifold I traced it to the square hole next to inlet port 3 I put my finger in the hole and engine idles 100 per cent. My Question is why is it drawing in air through there when it wasnt before. thanks

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Tue 21 Oct 2014 10:41
Vauxhall Corsa C 1.0 z10xe 51 reg - intake air leak - Peter.N.

Different manifold gasket or on the wrong way round?

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Wed 5 Nov 2014 23:02
Vauxhall Corsa C 1.0 z10xe 51 reg - intake air leak - 1litregolfeater

Assuming inlet port 3 belongs to cylinder 3, the last one and always the one with most problems, the one furthest from from the oil pump, my answer is thus:

Probably EGR gone bad.

I know there is a network of holes round the back of the cylinder head which cool and serve to extract air from the exhaust to the EGR. One of them faces to the inlet manifold.

I'd blank off or replace the EGR as a first measure, depending how you feel about nitrous oxides.

Note: you cannot just disable the EGR. The ECU needs to see it working.

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