[DeTomaso] NPC Trouble Shooting and Compression Test Question

[michael@michaelshortt.com]

IMHO it will not.

Michael
On Mar 4, 2012 11:47 AM, "Tom Borcich" <tborcich at msn.com> wrote:

>
> A couple of teenagers in the neighborhood are trying to fix their off road
> jeep that is pouring
> white smoke out of the exhaust...the jeep has almost 197k miles according
> to the odometer. The
> heads have a fresh rebuild (new valves, seats, guides, seals, milled) done
> by a local machine
> shop. It looks like the short block had a rebuild recently (they bought it
> like this) because there's
> no ridge in the cylinders and there's almost no carbon build up on the
> pistons or sludge build up in
> the lifter valley which I would expect for a motor with this many miles on
> it.
>
> They pulled the heads off before doing a compression check because someone
> thought they blew a head gasket.
> But there are no signs of a blown head gasket...so I suggested throwing
> the heads back on just to
> do a quick compression check to see if there are any glaring problems.
>
> HERE'S MY QUESTION: Will the motor still give an accurate read if the
> valve train isn't fully put back
> together or should they put the push rods back in also and adjust the
> lifters? Hydraulic cam and most
> oil's probably drained out of the lifters.  I'm thinking without the
> valves opening properly they
> won't get correct compression test?
>
> Thanks for the help.
> Best Regards, Tom
>
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