Yes, 160 psi does seem somewhat low. When I had my old 1978 Dodge Power Wagon, I
tested each cylinder. They all came up around 180-185psi on a 90k motor, that
was about 8 years ago. Nice old 5.9L :) I hope my new 3k 5.9L in my R/T will be
just as good! After that I owned a 1987 GTA with a L98 5.7L, it only pumped out
125psi up too 155psi? I can't remember but the back cylinders had less pressure
than the front ones. It only had around 80k at the time, goes to show you GM
engines are just somewhat better than FORD. LOL! The Ford I had blew! I didn't
build the second motor it had, but they brother said it was a 400block with 351
Windsor heads? At least that one didn't blow! I don't know crap about Ford but
dam it sucked gas! Two gas tanks, 8mpg! After the A/C froze I gave it back to my
Family! No thanks, no Fords for me ever again!
What prompted you to check the pressure? Is it running badly, burning oil, oil
deposits on the plugs, loss in power? I not sure why the rear ones go out first,
more heat in the rear of the engine causes accelerated wear in the rear
cylinders?
"Doug Myers" <dougmyers@starpower.net> on 06/26/2001 11:53:19 AM
Please respond to dakota-truck@buffnet.net
To: dakota-truck-moderator@bent.twistedbits.net
cc: (bcc: Anthony Gonatas/KS/ARS/US/AON)
Subject: DML: This could be bad
Hey guys,
I did a compression check of my engine this morning and all the
cylinders are showing 180-185 psi except for #4 and #8 which are showing 160
psi. The truck just hit 38,000 miles so its out of warranty. Any
suggestions?
Thanks,
Doug Myers
-------------
'99 Dakota RC/SB 5.2L/5-speed/3.92SG
K&N Gen II, B&F Billet TB, Hughes Stage 1 Intake, 180 T-stat,
MP cam, MP headers, MP catback, MP plug wires, Accel Supercoil,
Custom Computer by Ron Zimmer, Centerforce Dual Friction Clutch
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