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  #1  
Old 10-17-2002, 11:54 AM
Chris17H
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Exclamation Hard Starting 300E

Everytime I go to start my car after the cars been "resting" it always takes forever to start. I turn the key, it cranks and cranks and cranks and when i think i got it started, it stalls. Recently it's been doing it occationally after it's jus been started. So what helps a bit is reving it while im starting, but still occationally stalls. I had some work on it a few weeks ago and my mechanic said it needed some new spark plug wires, now i didn't want to have him do it cause i was gonna have to pay much more to get it done, so i figured i'd just do it once i got around to it, which i havn't yet. Would that effect my starting that much? Also would worn Spark plugs do all this? Im going to replace these things with in the month. Also, would fuel injecters have a part in this? Once our school shop become usable (under construction), im going to be doing all this work then.

Thanks in Advance
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  #2  
Old 10-30-2002, 08:51 PM
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Hard Starting

Did you ever solve this? I've got a hard starting problem with my 92 300E, too.
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  #3  
Old 10-30-2002, 09:55 PM
Jackd
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If the ignition system is not in top shape, it could be one of the causes of your problem.
Other possible causes: Fuel accumulator, fuel pump, fuel filter, cold start valve (below a certain temperature). Been there, done that.
Good luck
jackD
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  #4  
Old 11-20-2002, 01:19 AM
al'sbenz
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for Chris17H re your starting and stopping 300E

One day I tried to start my 86 300E and it started then died. This happened several times in succession. I called MB and they replaced the Fuel Accumulator. It has been starting fine and running well since. Might be your problem.

Al
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  #5  
Old 11-20-2002, 09:10 AM
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Hard Starting

It turned out the coil was the culprit. Replaced it and everything's fine!

Thanks for the response.
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  #6  
Old 11-20-2002, 10:58 AM
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Location: San Francisco, CA
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Todd

How did you know it was the coil?

Haasman
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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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  #7  
Old 11-20-2002, 11:12 AM
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Hard Starting

The starting problem existed only in cooler and/or wet weather. My guess was that fuel delivery wasn't the problem, otherwise the problem would probably have been more consistent, despite the weather. I didn't really know it was the coil, as I don't have my own diagnostic equipment, but I took a guess and figured I'd start with the easiest-to-deal-with, most common problems. The car has over 150,000 on it and the coil was the original part. I found a guy who would replace it for $110, parts/labor, so I figured what the heck. The coils tend to go on these cars after a certain time anyway. I did also replace the overvoltage protection relay previous to the coil, but that wasn't the problem. But i've heard that sometimes that can be the culprit, too. At least now I know those two parts are OK for another 100,000K or so.
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  #8  
Old 11-20-2002, 11:41 PM
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Todd,

Thanks for the explanation.
__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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  #9  
Old 11-21-2002, 11:40 AM
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Is replacing a coil a DIY type job? Is the coil ever replaced at one of the major services, i.e. 120,000 miles?

Thanks,

glenmore
1991 300CE
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  #10  
Old 11-21-2002, 12:50 PM
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Hard Starting

Replacing the coil is definitely a DIY job -- should take no more than 20 minutes or so. You can find the part at wholesale pricing of just over $100 or so.

I don't believe the coil is automatically replaced at any servicing. I checked back on that on the description of the 120,000 service, which I took my car in for, and nothing about the coil is mentioned. Remember, I drive a '92 300E: it has one coil. I believe other models may have more, or even no coils?
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