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Does the engine have hydraulic lifters? If so--long shot--could be a
sticky lifter or two.
But distributor cap sounds likely.
Bob
On 11/21/2018 12:32 PM, RONALD GRIFFING wrote:
> I would check the distributor cap first.
>
>
> Sent from Xfinity Connect Application
>
>
> -----Original Message-----
>
> From: eric@megageek.com
> To: Shop-talk@autox.team.net
> Sent: 2018-11-21 11:57:12 AM
> Subject: [Shop-talk] Tricky problem with a GMC 3500
>
> 1998 GMC 3500 mason dump. Â LOW miles ( 87K) Â Gas engine
>
> When it runs, it is flawless. Â Great idle, lots of power, no issues.
> Â Kept in heated garage. Â Always on a battery tender.
>
> About 6 months ago (maybe longer as this truck is rarely used.) Â when
> I would first start it, it would idle way too low and stall. Â I few
> minutes of warm-up, and it was fine.
>
> Then, this past month, I had to move it to one of my out buildings for
> about 3 weeks. Â The building has lots of moisture (it will NOT stop
> raining and now snowing here.)
>
> I went to start it up and it wouldn't start. Â Engine turned over fine,
> sounded normal, but it wouldn't start.  After I tried a  few times,
> the engine would 'diesel' when I stopped cranking.
>
> I tried some starter fluid and it didn't change anything (so I thought
> no spark.) Â Battery was on a 'boost starter' plugged in the wall. Â Gas
> smell coming out of tailpipe.
>
> Checked spark, all good. Â Under the hood seemed dry (there was no
> condensation or anything) but the building had a wet floor.
>
> After some wrangling with a tractor, fork-lift, and a few new
> vocabulary words, Â I got it onto the main garage where I let it sit
> over night with the hood up.
>
> So I tried it today and it started right up. Â So this is clearly an
> issue with the moisture. Â My question is, where do I start to
> troubleshoot? Â I can't predict it being moist in the other garage (and
> when it's there, it's away from all my tools etc.)
>
> ODBC tool has no codes.
>
> Any ideas on how to fix this? Â I'd hate to be stuck on the side of the
> road because of rain or something.
>
> Thanks!
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<p>Does the engine have hydraulic lifters? If so--long shot--could
be a sticky lifter or two.</p>
<p>But distributor cap sounds likely.</p>
<p>Bob</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 11/21/2018 12:32 PM, RONALD GRIFFING
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:90280742.1.1542831626941@localhost">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
I would check the distributor cap first.<br>
<br>
<br>
Sent from Xfinity Connect Application<br>
<br>
<br>
-----Original Message-----<br>
<br>
From: <a class="moz-txt-link-abbreviated"
href="mailto:eric@megageek.com";>eric@megageek.com</a><br>
To: <a class="moz-txt-link-abbreviated"
href="mailto:Shop-talk@autox.team.net";>Shop-talk@autox.team.net</a><br>
Sent: 2018-11-21 11:57:12 AM <br>
Subject: [Shop-talk] Tricky problem with a GMC 3500<br>
<br>
<font size="2" face="sans-serif">1998 GMC 3500 mason dump. Â LOW
miles
( 87K) Â Gas engine</font>
<br>
<br>
<font size="2" face="sans-serif">When it runs, it is flawless.
 Great
idle, lots of power, no issues. Â Kept in heated garage. Â Always
on a battery tender.</font>
<br>
<br>
<font size="2" face="sans-serif">About 6 months ago (maybe longer
as
this truck is rarely used.) Â when I would first start it, it
would
idle way too low and stall. Â I few minutes of warm-up, and it
was
fine.</font>
<br>
<br>
<font size="2" face="sans-serif">Then, this past month, I had to
move
it to one of my out buildings for about 3 weeks. Â The building
has
lots of moisture (it will NOT stop raining and now snowing
here.)</font>
<br>
<br>
<font size="2" face="sans-serif">I went to start it up and it
wouldn't
start. Â Engine turned over fine, sounded normal, but it wouldn't
start.
 After I tried a  few times, the engine would 'diesel' when I
stopped cranking. Â </font>
<br>
<br>
<font size="2" face="sans-serif">I tried some starter fluid and it
didn't
change anything (so I thought no spark.) Â Battery was on a
'boost
starter' plugged in the wall. Â Gas smell coming out of tailpipe.</font>
<br>
<br>
<font size="2" face="sans-serif">Checked spark, all good. Â Under
the hood seemed dry (there was no condensation or anything) but
the building
had a wet floor.</font>
<br>
<br>
<font size="2" face="sans-serif">After some wrangling with a
tractor,
fork-lift, and a few new vocabulary words, Â I got it onto the
main
garage where I let it sit over night with the hood up.</font>
<br>
<br>
<font size="2" face="sans-serif">So I tried it today and it
started right
up. Â So this is clearly an issue with the moisture. Â My question
is, where do I start to troubleshoot? Â I can't predict it being
moist
in the other garage (and when it's there, it's away from all my
tools etc.)</font>
<br>
<br>
<font size="2" face="sans-serif">ODBC tool has no codes.</font>
<br>
<br>
<font size="2" face="sans-serif">Any ideas on how to fix this?
 I'd
hate to be stuck on the side of the road because of rain or
something.
 </font>
<br>
<font size="2" face="sans-serif"><br>
Thanks!</font>
<br>
<font size="2" face="sans-serif"></font>
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