1 -Optimally, run engine till hot
2 -Pull all plugs out
3 -Throttle wide open
4 -With gauge in each hole at a time, spin with starter to max
reading and record
5 - Not sure of the absolute numbers but consistency between
cylinders within 10% is good
6 - In cylinders with low reading squirt in a bit of eng oil - if
this significantly brings it up, its rings - if not its valves.
If readings are good keep the record, in case u will ever sell the
car.
Mike L.
AN5 10426
----- Original Message -----
From Vrba, Dave <Dave.Vrba at am.sony.com>
To: <spridgets@autox.team.net>
Sent: April 7, 2000 11:21 AM
Subject: Compression check - Proper way
> Hi listers,
> Ugy, my '62 sprite, has been down waiting for my lazy butt to
pull the
> engine to do the "clutch" thing.
> While procrastinating this job the other night, I thought to my
self, Self -
> do a compression check on the 1275 before you pull it. OK - Got
a
> compression tester but now would like the proper procedure to DO
the check
> for each cylinder.
>
> All plugs out, squirt some oil in the cylinder (maybe not) and
check each
> one whilst cranking the starter over?
>
> Only plug to be tested out and others left in?
>
> Please advise your procedure for correct readings. What should
I see for
> readings? What do poor readings mean?
>
> Thanks,
> David L. Vrba
> '62 Sprite MKII
> Dublin, CA
>
>
|