Re: 92 ranger compression test
Try removing plug for #3, squirt some oil in it, re-install plug , re-test
compression. If it goes up, that is usually a sign that rings are worn out or
> I once had a head gasket blow between cylinders, so that is possible.
> However, the numbers you describe don't seem to indicate that at all. If
> two side by side cylinders had an opening between them, both would have low
> compression numbers. Besides, if you had a gasket blown between cylinders,
> you'd hear a peck, peck, peck as the air was forced back and forth from
> cylinder to cylinder.
> It looks more like you either have a valve problem, or, more likely, a
> problem in the cylinder. It might be the compression rings in that cylinder
> are broken, or the cylinder wall is scored, or even a burned piston.
> I'm no expert, by any means, so take this message as my somewhat educated
> opinion. Someone else could tell you how to troubleshoot the situation
> <email@example.com> wrote in message
> > hello,
> > i have a 92 ranger 2.3l and i think the head gasket is blown. i did a
> > compression test and got the following results: 105,105,60,165. just
> > wondering if it could be more than a bad head gasket. why would the
> > pressure in #3 be so low and in #4 so high? is the compression from #3
> > leaking into #4? any thoughts will be appreciated.