If it's all carboned up from slow city driving, before you change the plugs
try an Italian tuneup - high RPMs, high load (up a hill and/or 3 of your
heaviest friends), and at least 2 miles of this style of driving. It might
sound like hell after the first time you do this, but if you do it a few
times the amount of carbon should be blown out the exhaust.
On 3/25/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> 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
> >>
> >>
> >>
> >> _______________________________________
> >> http://www.striplin.net
> >> For new parts see official list sponsor: http://www.buymbparts.com/ For
> >> used parts email [EMAIL PROTECTED]
> >>
> >> To Unsubscribe or change delivery options go to:
> >> http://striplin.net/mailman/listinfo/mercedes_striplin.net
> >>
> >>
> >> _______________________________________
> >> http://www.striplin.net
> >> For new parts see official list sponsor: http://www.buymbparts.com/
> >> For used parts email [EMAIL PROTECTED]
> >>
> >> To Unsubscribe or change delivery options go to:
> >> http://striplin.net/mailman/listinfo/mercedes_striplin.net
> >>
> >
> >
> >
> > --
> > Sunil Hari
> > 1992 300D 2.5T - 286Kmi.
> > [EMAIL PROTECTED]
> > 513-205-7474
> > _______________________________________
> > http://www.striplin.net
> > For new parts see official list sponsor: http://www.buymbparts.com/
> > For used parts email [EMAIL PROTECTED]
> >
> > To Unsubscribe or change delivery options go to:
> > http://striplin.net/mailman/listinfo/mercedes_striplin.net
> >
>
>
>
> _______________________________________
> http://www.striplin.net
> For new parts see official list sponsor: http://www.buymbparts.com/
> For used parts email [EMAIL PROTECTED]
>
> To Unsubscribe or change delivery options go to:
> http://striplin.net/mailman/listinfo/mercedes_striplin.net
>
--
Sunil Hari
1992 300D 2.5T - 286Kmi.
[EMAIL PROTECTED]
513-205-7474
