Slow start cold is a symptom of a weak battery or a dying starter,
this is exactly what my 300D did last winter. Not start, excessive
cranking, lots of white smoke. Started like new about 32F, no go at
all below.
New battery fixed it right up.
Peter
On Dec 17, 2011, at 5:35 PM, WILTON wrote:
Starter's spinning a plenty, but I've never had to "spin/grind" it
in such a manner before; 'shouldn't hafta spin/grind it in such a
manner, and I DON'T grind on it. After it warms a bit with
additional glowing or by Mother Nature, it starts with the usual
short touch of the start switch.
You're right, it should start like it always did before. BTW, new
glow plugs would not have impeded starter.
'Haven't noticed any compression "puffing" around the plugs; yes,
I've looked and listened; 'don't see/hear anything unusual.
Wilton
----- Original Message ----- From: "Peter Frederick"
<psf...@earthlink.net>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Saturday, December 17, 2011 6:02 PM
Subject: Re: [MBZ] Glowing ]91 350SDL
Get the starter draw tested. Sounds much more like a slow starter
to me, unless you have serious compression leakage around those
new glow plugs it should start like it did before.
Don't wait until it locks up....
Peter
On Dec 17, 2011, at 3:30 PM, WILTON wrote:
Several months ago, I installed 6 new glow plugs in the SDL.
Since then, when its cool, below 50F or so, I have to glow it for
3 or 4 30-second cycles to start it without "grinding" starter.
Glow light gives normal indications, fuse is good/new (yes, it
really is - good power (12v) on both sides of fuse), relay
clicks at 30 seconds, continuity check of all plugs is good.
'Does same way with another good relay. Plugs are obviously
heating some -' just takes longer/several times when engine is
cold. When it starts, all cyls fire evenly with nice, smooth
idle. 'Seems that when it gets warm enough to start, all cyls
have warmed evenly. 'Just realized something I haven't done yet
- check voltage at each of the 6 relay pins during the 30-second
cycle. Always before, 'cept when plugs are bad, it started with
just a touch of the starter switch to START.
When I replaced the glow plugs, I did not ream the holes;
suppose carbon build-up is keeping the plugs from heating as
rapidly or as well as it normally has? 'Spose my need for
additional glowing is due to carbon build-up?
Wilton
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