superduty-list Digest V2001 #31

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superduty-list Digest Tue, 20 Mar 2001 Volume: 2001 Issue: 031

In This Issue:
Hard starting diesel
Re: Hard starting diesel
ADMIN: Ford Vehicle id contest results

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From: "Dan Brotzman" frontiernet.net>
Subject: Hard starting diesel
Date: Tue, 20 Mar 2001 08:15:23 -0600

A couple things to check on your diesel power stroke - hard starting often
is traced back to a bad glow plug or two. On a power stroke the glow plugs
are located under the valve covers. Remove the vavle covers, and using an
ohm meter check each glow plug by removing the wire attached to the glow
plug. Place one ohm meter lead on the glow plug terminal and the other ohm
meter lead to a good ground. All glow plugs should have approximately the
same resistance reading. Often times the bad glow plugs will not give you
any reading. Screw out the bad ones and replace with new ones. Some people
recommend replacing all of the glow plugs at once since it is somewhat of a
chore getting under the valve covers.
The color of your exhaust is common if you have a glow plug or two not
working. The grayish blue or light gray is unburned fuel from the cylinders

with the bad glow plugs.
At 100K I assume you have changed you air cleaner as this can reduce you
fuel milage. Diesels do not run "rich" or "lean" like gas engines. A diesel
has no throttle plate in the intake system like a gasser. The power out put
is only controled by the amount of fuel injected from the injector. The more
air in a diesel the merrier. Hope this helps.

From: "Liz Marr" cc-ent.com>
> Date: Mon, 19 Mar 2001 19:46:58 -0800
> Subject: How to tell if a diesil is running too rich?
>
>
> My truck has been a bit "off" it's feed lately. It celebrated 100K miles
last
> week, and for a long time it's been a royal pain to start on cool (less
than
> 45 degrees F) mornings. Now it is taking forever to warm up and it has
> just an ever so slight silvery blue exhaust, especially when it is cold.
It
> sounds about the same as it always has, but fuel economy has dropped
> from 20-25 mpg to 18-20 mpg - so of that I think is from when I don't
> plug it in and it takes five minutes to start. Who knows how much diesel
I
> waste cranking it like that. So, what things do I need to consider doing
to
> get this pour beast running at top form. I don't trust the local Ford
> dealership, so I need to know exactly what things to plan on replacing, ....

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