My new baby w124 300e won't start - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 07-16-2019, 10:25 AM Thread Starter
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Date registered: Jul 2019
Vehicle: W124 300e 1991
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My new baby w124 300e won't start

Hello, I'm new here, and also new in the Benz World.
I bought my first Mercedes last week.
Very cheap one and I want to learn how to fix it.
I love fixing cars during my week-ends.

My car (W124 300e from 1991) won't start, she starts right up with Start Pilote, and also there seems to be a good fuel pressure out of the fuel regulator.

I have to turn the jetronic adjustment screw?

Thanks a lot !

(I put new gas in it)
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post #2 of 8 (permalink) Old 07-16-2019, 12:08 PM
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Factory Sevice Manual

Since you are new to your car, take time to explore the Sticky: 124 DIY Thread section. Many helpful write ups on how to repair these cars, and the Factory Service Manual is there online.
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post #3 of 8 (permalink) Old 07-16-2019, 12:12 PM
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it takes fuel, compression, & spark to start an engine..


so, did this car run when you bought it, or did you buy a broken non-running car ?


absolutely do NOT mess with the jetronic mixture screw, thats not what would prevent it from running unless someone previously messed it way far out of whack..


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post #4 of 8 (permalink) Old 07-16-2019, 04:44 PM
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Welcome to the 124 forum Jeremy and congrats on acquiring the car.

As mentioned, don't start turning any screws...You said the car would run with starting fluid. If that's the case, you have a fuel delivery problem. Inop fuel pumps would be a good place to start your investigation. Check your fuses, in fact, get rid of all the aluminum ceramic ones and replace with copper ceramic type. Make sure you hear the pumps prime up when the key is initially turned to position 2.

Report back

Again, welcome

Jayare

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post #5 of 8 (permalink) Old 07-16-2019, 05:59 PM
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Fuel filter, fuel hoses, fuel pumps.....check the pressure going into the fuel distributor. I'd check out all those first and then we can give you some more ideas.

It could be a lot of things but sounds like you have spark.

Kevin
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post #6 of 8 (permalink) Old 07-16-2019, 06:31 PM
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they say there's nothing more expensive than a cheap mercedes....


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post #7 of 8 (permalink) Old 07-20-2019, 03:48 AM
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Spot on left coast geek, and i know how it is because my car was a gift . And after 4 years i am just about finished replacing and making it as good as new . Repair one item ,and end up with more things to put right . The parts are old and plastic is brittle it snaps off with a click . You have to work on the plastic as if its about to explode .
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post #8 of 8 (permalink) Old 07-20-2019, 10:57 AM
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well, the plastic on my various 124's is in a lot better shape than the plastic in my last couple contemporaneous Volvos, so....

I do note that tan interiors seem to be much more brittle than grey or black.


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