c107 1973 Mercedes 450SLC Engine stalls after a couple of minutes. - Page 3 - Mercedes-Benz Forum

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post #21 of 21 (permalink) Old 12-04-2014, 03:17 AM
BenzWorld Senior Member
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Date registered: Jan 2009
Vehicle: 1980 450SL named Freya. 202,000mi
Location: Hollywood, Ca.
Posts: 556
Mentioned: 1 Post(s)
Quoted: 138 Post(s)
My general thoughts after watching the YouTube video:

1) the sound on the right sounds like an exhaust leak. Also, This car has solid tappets that need to be adjusted regularly, and that could be related.

2) exhaust looks like you are burning oil, could be valve seals - how many miles?

3) after car is completely warm, what is idle set at? It seems low for cold start. As I recall, warm idle in this car should be something like 750.

4) replacing the filter would only allow an increase in fuel pressure. Perhaps you are now running rich, and when the AAV valve closes when you warm up, the engine dies due to over-rich mixture.

See if adjusting the mixture leaner helps.

Last edited by Myndex; 12-04-2014 at 04:37 AM.
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