compression test??

[sidewayssr20]

going doing a compression test on my engine just wondering what reading should i be expecting to get??? its a redtop sr20det

[Scamper]

If things are healthy and as they should be, you should be getting between 160 - 145 , anything lower is weak, if you end up with 3 high and one low then that cylinder is not fireing right

[sidewayssr20]

when you say not firing rite what would you mean??

[Scamper]

As in if one cylinder is down, then your engine is not running rite

For example, if you got a reading of 155,155,150,155

That would be perfect, they can be a few psi off each other, wont make any difference

or if you got 155,150, 60, 155

You know that cylinder 3 is your problem

[sidewayssr20]

cheers lad sound!

[Sir Diffsalot]

The psi its self isnt as important as all the cylinders bein in and around the same

[eileen]

If things are healthy and as they should be, you should be getting between 160 - 145 , anything lower is weak, if you end up with 3 high and one low then that cylinder is not fireing right

compression test shows only compression, not firing engine doesnt fire when you do a test.... what it would indicate is either valves or piston rings....

[Scamper]

Thats what i meant, fireing was just my choice of words, i didnt actually meaning fireing!

[eileen]

yeeaaahhhh right

[poggy]

Yes any more than a 1 bar difference between cylinders and i would be getting worried and make sure to hold the throttle open when cranking cause if you don't you won't get a correct reading.