Don,
Just catching up on the digests. Before you take off the head you might
want to check the timing chain and if that's good then check the
injection timing. It sounds like the timing is retarded. Stretched
timing chain can do that if everything else is OK. Then when you take
off the head
Don,
If the headgasket has ruptured at front oil passage, oil consumption should
skyrocket. Any sign of coolant in oil or vice versa? Consider an engine oil
analysis to know for sure if you've got coolant being burned.
Have you tried unplugging the EDS computer connection on back of IP?
Max
Unplugging the idle control will only make it drop back to mechanical
idle, it does absolutely nothing but regulate idle speed. No white
smoke, no stumbles unless its' very intermittant, and if it is, you
need to fix the broken wire.
A bad head gasket at the front can easily hold oil
Thanks - we'll exhaust all other options before pulling the head. The
PO reports that it's been this way the last several years, and has not
gotten any worse. He also reports that it doesn't miss at idle in the
heat of the summer, only the other three seasons.
On Thu, May 8, 2008 at 9:43 AM, MG
it and just leave it unplugged.
Max
--
Message: 10
Date: Tue, 6 May 2008 22:51:54 -0500
From: OK Don [EMAIL PROTECTED]
Subject: [MBZ] 603 stumbles
To: Mercedes Discussion List Mercedes@okiebenz.com
Message-ID:
[EMAIL PROTECTED]
Content-Type: text/plain
On Tue, May 6, 2008 at 11:02 PM, Craig McCluskey [EMAIL PROTECTED] wrote:
The glow plugs all measure 'good' with an ohmmeter - the relay is
next. It will be purged this weekend, then will have to find decent
hills somewhere - perhaps in Luther's neck of the woods.
Replace the bad glow plugs,
Where is this oil line from the block to the pump?
I just finished the bottle of Power Service - will get more.
I would make sure the oil pressure line is flowing oil to the injector pump.
It has a very small orifice where it comes off the block and could be
plugged. Also consider the
: Tue, 6 May 2008 22:51:54 -0500
From: OK Don [EMAIL PROTECTED]
Subject: [MBZ] 603 stumbles
To: Mercedes Discussion List Mercedes@okiebenz.com
Message-ID:
[EMAIL PROTECTED]
Content-Type: text/plain; charset=ISO-8859-1
My son's new '87 300D misses, or stumbles when warm and idling
That car has a blown head gasket, I traded it to whats his name as such.
It doesnt have the typical coolant problem, I suspect this one is blown
between #1 and the timing area
My son's new '87 300D misses, or stumbles when warm and idling. It's
like it fails to fire once every second or two.
is bad or the 'puter is bad.
Idle will drop to around 550 RPM; you can manually adjust back up to where
you like it and just leave it unplugged.
Max
--
Message: 10
Date: Tue, 6 May 2008 22:51:54 -0500
From: OK Don [EMAIL PROTECTED]
Subject: [MBZ] 603 stumbles
Email phone @ gulseth.net if you do
On Wed, 07 May 2008 08:15:41 -0500, OK Don [EMAIL PROTECTED] wrote:
On Tue, May 6, 2008 at 11:02 PM, Craig McCluskey [EMAIL PROTECTED] wrote:
The glow plugs all measure 'good' with an ohmmeter - the relay is
next. It will be purged this weekend, then
Oh, boy -- low compression on #1 is often a blown head gasket, and eventually
it will allow too much oil into the #1 cylinder (from the pressure passage
across the front of the block) and bend the rods.
I'd check for excessive blowby and plan on replacing the head gasket -- you are
about
When I had that car it would litterally fog up the neighborhood when it
was sitting there idling. Dont know if it still does taht or not but
problems like that just dont dissappear.
Oh, boy -- low compression on #1 is often a blown head gasket, and
eventually it will allow too much oil into
@okiebenz.com
Sent: Tuesday, May 06, 2008 11:51 PM
Subject: [MBZ] 603 stumbles
My son's new '87 300D misses, or stumbles when warm and idling. It's
like it fails to fire once every second or two. It looks like the
delivery valve seals are leaking some, but Diesel is not pouring off
the top
Forget what I said then, as blown head gasket at oil passage is supposed to
present as rough idle and increased blue smoke...
Max
--
Message: 17
Date: Wed, 7 May 2008 14:10:53 - (UTC)
From: [EMAIL PROTECTED]
Subject: Re: [MBZ] 603 stumbles
To: Mercedes
Guess I need to get Diesel compression tester after all --- can't have
too many measuring tools!
On Wed, May 7, 2008 at 9:10 AM, [EMAIL PROTECTED] wrote:
Forgot to mention, that car had low compression on #1 when I had it, that
was why it was stumbling when warm.
--
OK Don, KD5NRO
Norman,
I paid something ridiculous like $19.99 for the Harbor Freight one
with 20 or 30 adapters.
Like this, but I swear it had a lot more pieces:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93644
OK Don wrote:
Guess I need to get Diesel compression tester after all --- can't
Well, it blows some white smoke while cold, none after it warms up
On Wed, May 7, 2008 at 1:19 PM, Dillon, Meade M CIV SPAWARSYSCEN
Charleston SC J63 [EMAIL PROTECTED] wrote:
Forget what I said then, as blown head gasket at oil passage is supposed to
present as rough idle and increased
Thanks! It should be accurate enough to measure the difference
between cylinders -
On Wed, May 7, 2008 at 8:50 PM, Mitch Haley [EMAIL PROTECTED] wrote:
I paid something ridiculous like $19.99 for the Harbor Freight one
with 20 or 30 adapters.
Like this, but I swear it had a lot more pieces:
My son's new '87 300D misses, or stumbles when warm and idling. It's
like it fails to fire once every second or two. It looks like the
delivery valve seals are leaking some, but Diesel is not pouring off
the top of the IP.
It also blows white smoke when it starts - till warm - and smells like
On Tue, 6 May 2008 22:51:54 -0500 OK Don [EMAIL PROTECTED] wrote:
My son's new '87 300D misses, or stumbles when warm and idling. It's
like it fails to fire once every second or two. It looks like the
delivery valve seals are leaking some, but Diesel is not pouring off
the top of the IP.
It
In a message dated 5/6/2008 8:52:13 P.M. US Mountain Standard Time,
[EMAIL PROTECTED] writes:
My son's new '87 300D misses, or stumbles when warm and idling. It's
like it fails to fire once every second or two. It looks like the
delivery valve seals are leaking some, but Diesel is not
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