Vauxhall Vectra compression
Variant: 2.0ltr sri manuel
Model Year: 1998
Categories:
Running Rough, Starting & Power Loss
cam belt snapped due to water pump now repaired but now it wont start! so done compression test and its only reading 50 bar on each cylinder and also none of the valves are bent someone please help!
Posted: Jan 3, 2012 (12 years ago)
Oh yes they are!!
If they were bent enough to jam open you'd have 0 compressio.
50 psi says they are partially sealing.
Anyway,how did you test them for damage?,or didn't you take off the head?.
There's and old dodge,with the head off and valve closed fill the runner with fuel,if it seeps past an apparently fully closed valve it isn't.closed that is.
If they were bent enough to jam open you'd have 0 compressio.
50 psi says they are partially sealing.
Anyway,how did you test them for damage?,or didn't you take off the head?.
There's and old dodge,with the head off and valve closed fill the runner with fuel,if it seeps past an apparently fully closed valve it isn't.closed that is.
Posted Jan 4, 2012 (12 years ago)
Its actually reading 5 bar i think you will find, you have basically less than half the expected compression, which should be around 12bar, when you cambelt failed the pistons have touched the valves and bent them hence the poor result (5bar) this isnt enough comp to start the engine.
You need to remove your head and get it overhauled i'm afraid
You need to remove your head and get it overhauled i'm afraid
Posted Jan 5, 2012 (12 years ago)
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