Moderated Discussion Areas
ContinuousWave: Whaler Repairs/Mods
Is this compression OK?
|Author||Topic: Is this compression OK?|
posted 06-26-2002 01:59 PM ET (US)
1988 Mercury 200hp.
Five cylinders @125. One at 95. Measurements taken after engine was run on muffs for about 30 seconds, so the engine was pretty cool.
Is this a time bomb?
Thank you! Ed
posted 06-26-2002 02:52 PM ET (US)
Do an engine decarb and see if it increases. i assume you checked that cyl more than once. If it does not come up ANY after a decarb.....tic....tic....tic
posted 06-27-2002 12:12 PM ET (US)
The 95 lb cylinder has a problem. Decarb may help but I'd be surprised, since just one cylinder is low. You may just have a bad head gasket, or (much worse) a problem with the cylinder itself.
How do the plugs look?
posted 06-27-2002 12:15 PM ET (US)
By the way, I wouldn't recommend ignoring the problem. If it is a bad head gasket you can probably live with it awhile but if the cylinder is on the way south it could make the repair more expensive if it isn't fixed soon.
posted 06-27-2002 12:19 PM ET (US)
Good point Chris. I am not sure if that engine has head gaskets per say. Many Mercs just have a water jacket gasket so low means....tic...tic...tic....Boom!
posted 06-27-2002 06:37 PM ET (US)
Test compression again. Reliability check. David
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.