compression test

Completed a compression test on freelander 1.8 and all cylinders are 14 bar or just over. Noticed oil level is slightly over the max. I believe they should be at 12 bar max. Has anyone the correct reading I should be getting.
I will be draining the oil and re doing test. Thanks Bri:blabla:

why ,the thing about compression test is comparison rather than exact reading should be done dry then wet ?(oil sqirted down bore to seal rings ) the fact they are they are the same is good

Yeah I know there should not be 10 % difference. Just with oil slightly over max, thought this may be giving me false readings. Cheers for reply

how

oil passing the rings

if oil was high enough for piston to hit it con rod/piston would be damaged,even high oil level is still not above sump level unless you put 2-3 gallons in

No not that bad, prob a pint over shes put in. I was checking originaly for hgf. cheers anyway

you'll find there is more to worry about than a careless pint.

leak down test is betterer

The Mad Hat Man said:

leak down test is betterer

Click to expand...

In lay mans terms, what's a leak down test? ta

instead of trying to turn the engne over and measure the compression (which varies due to cranking speed and whether oil has been pumped round n stuff) a leak-down test is where you apply a known pressure to a cylinder at TDC (usually 100PSI) and see how much leaks down past the rings......

http://en.wikipedia.org/wiki/Leak-down_tester

you pressurise cylinder with air and measure its leakage rate ,you can tell where leakage occurs ie through valves,or into coolant etc

Leak down test way forward