Re: [MV] M38A1 Engine trouble

pendleto@usit.net
Sun, 23 Aug 1998 19:14:37 -0400

Sounds like cam bearings
Bobby Joe Pendleton II
1953 GMC XM211
East TN
MVPA 17657
-----Original Message-----
From: Cliff Dahl <wrcc@rapidnet.com>
To: mil-veh@skylee.com <mil-veh@skylee.com>
Date: Sunday, 23 August, 1998 5:06 PM
Subject: [MV] M38A1 Engine trouble

>Once again I turn to this list for the tremendous amount of knowledge that
>is available.
>
>Last week I finished the last phase of restoration on my 52 M38A1, the
>stenciling. It was just in time for one of our local parades this weekend.
> It was one year ago that I finished rebuilding the engine (rings,
>bearings, reground crank, rebuilt head ect). Since that time the jeep had
>only been driven about 1 mile and had about 30 minutes of running time on
>the motor. I started up the jeep Saturday morning and noticed a small
>amount of smoke from the exhaust. I had good oil pressure (60 lbs cold),
>so I drove it downtown (approx 3 miles). Oil pressure was still good (40
>lbs driving and about 25 lbs at idle). About 2 hours later parade started
>and while I drove my halftrack, I had another guy drive the jeep right
>behind me. During the course of the parade, the jeep kept smoking worse
>and worse. About 3/4 way through the parade, the guy driving the jeep
>pulls of to the side and turns it off because oil pressure was down to 5
>lbs. After the parade, I checked, and found oil to be about 3 1/2 quarts
>low. I added oil and started jeep back up. Oil pressure only would get to
>5 lbs at high engine rpm. Idle was 0 lbs. I noticed that oil was spraying
>out on drivers side front of engine. It appears that the fuel pump may be
>the culprit, which would explain the bad smoking if the oil is being sucked
>into the vacumn system. My question is on the subject of the oil pressure.
> Why would pressure drop so severly, and never return when additional oil
>was added? Any ideas??
>
>BTW I have not had a chance to do any trouble shooting or inspection on
>engine yet, and engine was not knocking, so I don't believe I spun a
bearing.
>
>Thanks in advance.
>Cliff Dahl
>wrcc@rapidnet.com
>
>
>
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