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There appears to be a similar case on the Cobalt forum, where compression test figures are reported to be around 220 psi, roughly double what you're reporting. If this is the case for your vehicle, it would seem that the problem is related to a lack of compression and not fuel, air or spark.


2

I'm betting your Corsa is Drive-By-Wire (DBW), meaning, there isn't a direct connection between you and the throttle. If so, the gas pedal rheostat is probably telling the computer you are pressing it, causing the throttle to go up and in some cases not respond at all. You could possibly test the gas pedal by unplugging it and checking for even/smooth ...


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I'm not sure that the valve you have pictured is the PCV valve. A PCV valve traditionally is a connection between the intake manifold and the crank case. The line pictured, from the crank case to the air filter, is most likely a fresh air intake or breather line. But i think your on the right track to look for the PCV valve. A poorly working PCV system can ...


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My money is on a bad earth that's killing the low tension side of the coil when the fan gets power. Check the wiring security and for breaks in the wiring insulation. Also check that the earth points look healthy.



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