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Old 12-11-2003, 01:19 AM
fahrgewehr2's Avatar
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Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,264
Unhappy 300SE will not start

Ok- Probably in over my head here.

The story: Car started hesitating on way home tonight in the higher RPM range. I had set the mixture at 50% (fluctuating around that number) per the instructions I gathered from the site.

I check to see what the reading is now- I am getting a 10% reading with some small fluctuation. So I attempt to bring it back to 50%. Car begins to stutter, and idles poorly. I'm getting nervous now so I correct back and the car dies.

Engine now turns over but will only catch for a second or 2, idle VERY low, and then it just dies.

I feel like I am in over my head now, but not ready to give up.

The real problem is that I dont know if the mixture is way to lean or way to rich.

Where do I go from here? I am feeling very humbled as I have been so successful with everything I have done to the car up until now

Should I attempt to start the car with the EHA disconnected?

Any ideas?

Thanks in advance. Mike
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E

Last edited by fahrgewehr2; 12-11-2003 at 03:42 AM.
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  #2  
Old 12-11-2003, 09:47 AM
it leaks, its german
 
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
I had one last week with 205K on it that the coil was so weak it would not fire it off cold, however, warmed up and off enrichment it would start. Prior to this it would intermitently stumble or skip, then clear out and run fine.



Worth loking into.




Joe
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  #3  
Old 12-11-2003, 01:28 PM
fahrgewehr2's Avatar
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Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,264
Thanks Joe, I'll see what it looks like. Any good way to test?
Car been starting up instantly when cold prior to this fiasco.

This is how I think the car died in the first place: While turning the mixture screw for the first time last night, it sort of because "stuck" in the down posistion, holding the airflow plate slightly open, causing the engine to studder, and then die. After this, it simply wont idle.

How can I get the mixture screw back to about where it should be. Is there a reference point of some sort?



Mike
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E

Last edited by fahrgewehr2; 12-11-2003 at 01:35 PM.
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  #4  
Old 12-11-2003, 03:13 PM
fahrgewehr2's Avatar
Registered User
 
Join Date: Aug 2003
Location: Wilmington, NC
Posts: 1,264
OK, got her running again.

Looks like I was a little overzealous with that mixture screw and leaned it WAY out.

Have NEW question (I'm full of them) which will get its own thread.

Mike
__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E
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