Cold Start
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 34
Likes: 4
From: Baltimore, MD
ML 350
Cold Start
Here is latest on my '08 ML350.
In the morning when engine is started and after about 5 to 10 seconds later it will stutter for a second or two and then smooth out. This stutter feels like engine might stall, RPM drops briefly but smooth out quickly and doesn't happen for the rest of the day. When weather is warmer, we had brief heat wave about a month ago (@65-70F), it doesn't happen.
I changed all the plugs and coils, plugs look clean, it was due for new plugs(200k miles). Other than this morning hiccup car runs fine. My mpg is about 16 in town.
Any comments?
In the morning when engine is started and after about 5 to 10 seconds later it will stutter for a second or two and then smooth out. This stutter feels like engine might stall, RPM drops briefly but smooth out quickly and doesn't happen for the rest of the day. When weather is warmer, we had brief heat wave about a month ago (@65-70F), it doesn't happen.
I changed all the plugs and coils, plugs look clean, it was due for new plugs(200k miles). Other than this morning hiccup car runs fine. My mpg is about 16 in town.
Any comments?
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
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MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Well that means that it is your 12 yr. old fuel pump or the filter.
Being that they are separate parts but attached together, you have to decide which to replace or replace both.
Being that they are separate parts but attached together, you have to decide which to replace or replace both.
