Compression Check
 

I just got a call from the mechanic, he has done a compression check on my 7.4L MPI with 550 hrs on it. the readings varied from 100 to 110 psi. Should I be looking at a new power plant ? Can I get the season out of this one ?:confused:

Re: Compression Check
 

It is low (normal is around 150 psi), but at least there's not a big split between any of them. That points to normal wear as opposed to specific damage. Sounds like it may be about rebuild time.

Re: Compression Check
 

That seems like fairly low hours generally speaking for it to be worn out. Other than the low compression, are there any other problems with it? Does it run ok?

Re: Compression Check
 

Runs fine, does'nt use any oil, I would'nt have known the compression was out if the shop had'nt told me.

Re: Compression Check
 

Hmmmm....

I wonder if the gauge the shop was using was accurate? If it were me, I'd get a second opinion, or check it yourself. Its not hard to do.;)

Re: Compression Check
 

Thanks, good advice, I'll do that before I open my wallet.

Re: Compression Check
 

Reminds me of that old saying... "If if aint broke... don't fix it". :yes_grin: