Compression

[Paulstewart20]

I have a rough idle and water/black smoke out of the exhaust, suspect a bent valve or injector 14ohms across all injectors and cleaned throttle body but this made no difference, compression test revealed 1round 125 across all four, I read on here that it should be around 200 so is that my issue seems ok on power and revs ok but somthing isnt right checked all hoses for a vacuum leak but that seems ok dud the old gas bottle trick

 

[JB21]

You'll need to perform a leakdown test.

 

[Paulstewart20]

Just ordered one so see how that goes

 

[JB21]

Just ordered one so see how that goes

Make sure your compressor has the right attachment.

 

[Paulstewart20]

Ok so I had 20% to 27% drop across all four.

 

[Paulstewart20]

Is that ok or bad?

 

[Paulstewart20]

Ok got air leaking from here on 1 and 4 I have not test 2 and 3 yet but does this mean head gasket or inlet valves?