Going to put my car on my conzult this weekend and do a compression test what should a good reading be??

 

Dave

It's specified here :-

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=em&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=9&design=default&total=70

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=em&dir=&config=&refresh=&slide=62&cycle=off&scale=0&design=default&total=70

Thanks andy

 

What will the conzult read have not used for 2 years?

 

ie is it say 190 160 etc?

 

says on diagram 1285 [12.85 13.1] is this the figure [186] @the end i am looking for?

 

Dave

anything between 140-160 psi per cyl is fine, so if figures are between there then engine shows its in resonable health bud

 

less than 130 and engine is showing signs of wear

 

100 or less then its time for a rebuild

Don't follow what the ConZult has to do with this - it doesn't indicate compression.

 

Anyway, assuming your compression tester is calibrated in psi, then yes, the last figure is the one you're looking for. ie between 186 - 142 psi with no more than a difference of 14 psi between any two cylinders.

Thanks andy

 

What will the conzult read have not used for 2 years?

 

ie is it say 190 160 etc?

 

says on diagram 1285 [12.85 13.1] is this the figure [186] @the end i am looking for?

 

Dave

 

 

Yes 142(min)-186(max) is what you want your readings to be.

and 96psi is bad :cry:

Don't follow what the ConZult has to do with this - it doesn't indicate compression.

 

Anyway, assuming your compression tester is calibrated in psi, then yes, the last figure is the one you're looking for. ie between 186 - 142 psi with no more than a difference of 14 psi between any two cylinders.

 

 

I thought it did!!! cant you do a test when it drops cylinder one by 0ne :confused:

the cylinder drop test is to check for misfire.

the cylinder drop test is to check for misfire.

 

Oh i see i seemed to remember when i first used the conzult it came up with a figure which a mistook as a compression reading :confused:

Nope, you would have seen the number of revs the engine slows down by as each cylinder is dropped. Nowt to do with compression - well not much anyway ...