Re: ___ compression test with weak battery - CRV
"'Curly Q. Links'" wrote:
>
> I did a compression test on a '97 CRV the other day. 70,000 km. (I'm
> thinking of buying it)
>
> The engine was warmed up, but because of a very weak battery I think the
> compression test may be invalid. With PSI values of 85, 85, 80, 85, I
> think I wasted my time. We made sure it 'pumped' six times for each
> cylinder.
>
> Anybody know what are the compression test values for the original CRV's
> are supposed to be? Thanks.
>
> 'Curly'
Most of the Honda motors that I'm familiar with have compression specs in
the 170-185 range. Make sure that you have the throttle wide open when
you're doing the test. This will help achieve maximum air flow. You can
also put a small battery charger on the unit to give it a little extra boost
if the battery is weak (or use jumper cables connected to a good battery).
I believe the rpm spec for the compression test is 250 rpm.
Eric
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