Thanks Sunil and Dwight & Marshall -
As I reported, I changed the main and prefilters - without affect.
It sounds like Marshalls suggestion is highly likely -- my wife started
driving it to work yesterday - it's 55 miles each way at 60-70 mph 99% of
the time. I'll give that a try to see if it helps. Will try for some
longer trips also.
Unless I get energetic and decide to change the GPs. ;-) Course, it sounds
like I'll probably need to come up with a suitable reamer to clean out the
carbon.
Marshalls suggestion fits exactly with my thinking about the problem (tho I
didn't have nearly the precise definition Marshall provided) - the car only
had 99k when I bought it - 99K since being bought in 91 and me buying it
last month = 99k in 15 years or an average of 6600 miles/yr - making me
think it was driven very low miles probably around town - which would create
a carbon problem around the GPs. I may take the chicken way out and find a
shop I can trust to change the GPs and ream the appropriate areas -
but 1st we'll try the add'l GP heat time and the highway miles.
Thanks again to all!!
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
A Blood Test for your oil - www.youroil.net
For Test Results http://members.rennlist.com/oil
Weber Carb Stuff http://members.rennlist.com/webercarbs
http://members.rennlist.com/my_911/Index.htm For my Paint Job Info
----- Original Message -----
From: "Sunil Hari" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <[EMAIL PROTECTED]>
Sent: Friday, March 24, 2006 9:21 PM
Subject: Re: [MBZ] 91 300D Problem at Startup
Tank strainer issue? Also, from my experience the inline filters clog
faster than the spin-on.
On 3/24/06, Dwight E. Giles, Jr <[EMAIL PROTECTED]> wrote:
Larry,
I had a similar problem when I ran the fuel low. Did you change the main
filter? On mine inline would look OK but when I changed the cartridge,
it made a big difference.
Dwight
Dwight Giles, Jr
1979 240D auto, 250K + miles
1990 300D 2.5t, 130K miles
Wickford, RI
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Friday, March 24, 2006 9:00 PM
To: [EMAIL PROTECTED]
Subject: [MBZ] 91 300D Problem at Startup
Howdy -
Well, I've had my new (to me) 91 300D 2.5 Turbo and still am crazy about
this car - told my wife I wouldn't mind finding another and letting my
78
240D go. ;-)
Anyway - I've used 3 bottles of Biocide (purchased from West Marine) --
added per the instructions - 2 bottles at 1/2 tank - then filled up with
the
3rd bottle added, changed the fuel prefilter and the main filter. But
sometimes - and the problem being intermittant is frustrating - when the
car
is first started after sitting for 10+ hours with temp in the 50s or
below,
it acts like it's running on 2 or 3 cylinders with white smoke from the
exhaust. If the accel pedal is held to the floor it will clear up
within 10
seconds or so - then it's ok - it takes off like a scalded dog.
WHen I changed the fuel filters, I allowed the fuel to drain into a
glass
jar to see if there was any contamination present - if there was
anything
there it was microscopic!
I thought maybe there was some water in the fuel or filters - but have
run 2
tanks of fuel thru as well as changed the filters. I use fuel bought
from
a Mobil station that gets lots of truck traffic so it's always fresh.
I'm thinking I might try some LubriMoly Diesel Purge - if ya'll think it
might help.
But I'm at a loss to understand why it runs like this. I bought a set
of
GPs but it starts *instantly* in any temperature making me thing the GPs
are
fine. Also, the GP dash light stays on for about 10 seconds when dead
cold.
Which also makes me think the GPs are ok.
Any suggestions? TIA
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
A Blood Test for your oil - www.youroil.net
For Test Results http://members.rennlist.com/oil
Weber Carb Stuff http://members.rennlist.com/webercarbs
http://members.rennlist.com/my_911/Index.htm For my Paint Job Info
_______________________________________
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--
Sunil Hari
1992 300D 2.5T - 286Kmi.
[EMAIL PROTECTED]
513-205-7474
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