Peter, It took me a while to get to this due to computer
problems. I guess this was meant for me with the mention of the
Chevy. The van has a new starter. I replaced it and installed the
heat shield that was missing as I also thought that might be one
of the problems. To some extent the starter helped with starting
in general as the new one turns the engine over a lot faster.
Still doesn't change the hot start after the engine has been off
for about 15 to 20 min. Before that its fine though you do notice
that it takes longer to start the longer it sits, heat soaking.
After about 2-3 hours it's fine again. No increase in the oil
level or thinning of the oil. Still it also changes with the
almost every fill up. With one tank of fuel it may do it and the
next it won't. I try to stay away from Shell as that seems to be
one that has done it more often then others. There have been
other no name stations that have also had fuel with the same problem.
All that said I think that compression may be part of the problem
as it is a rather high mileage engine for a 6.5. It has over
200,000 miles on it and people that I have talked to around here
seem to think that is more then I can expect from one of those.
Anyway I only use it now and then when I have to pull a heavy
trailer. Lately it has been the 'small' 1/2 ton military trailer
usually with about 3000lbs of sand on it. :-) The 300D doesn't
seem to be able to manage that quite as well and the hitch on it
is a bit too low anyway. In any case I'm too lazy to do a
compression check on the engine as I am getting to the point
where the contortions needed to do that are just too much just to
find out if that's the problem. I'll just keep going with it till
it dies and then get rid of it.
Manfred
Date: Wed, 16 Jun 2010 22:12:51 -0500
From: Peter Frederick <psf...@earthlink.net>
Subject: Re: [MBZ] Hard start problem returns- Update
You should also check the current draw on the starter when hot.
When
the windings go bad, they get high resistance, and that excess
resistance goes way up with temperature, so when you crank with a
bad
starter that is already hot, it won't turn the engine fast enough to
start. 100 rpm minimum, anything less and the compression leaks
down
too low for it to fire even with glow plugs.
Worth a check, as this condition will give you the same problems
(although it won't respond to bleeding the lines). GM was famous
for
roasted starters, especially Chevy, since the starter was less than
an inch from the exhaust manifold!
It's also possible that you have an internal leak in the IP -- you
aren't "making" oil are you? check for fuel in the oil, of present
time to fined a used IP.
Peter
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