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Old 03-09-2002, 06:57 PM
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350SL quits when hot

I have a 1972 350SL that has an annoying problem of stopping when hot and when left to cool down for a couple of hours will start and run as if nothing happened.
It appears to have to have good spark but I changed the coil anyway but this did not change anything.
The fuel pump still runs and there is approx 25psi in the fuel injector rails.
I took the L/H side injectors out as a complete assembly and when cranking the engine only one was working.
Any suggestions greatly appreciated.
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Old 03-09-2002, 11:28 PM
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I had something of a similar situation with my 73 450sl a couple of weeks ago on a hot day. It stalled at idle, and almost did another couple of times. It started right up though. I haven't had the problem again. Someone suggested the car was particularly sensitive to oxygenated gasoline which is sold here in Calif. through February. Were you running on oxygenated gasoline? I know there are additives that are supposed to help this.
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Old 03-10-2002, 01:52 AM
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Join Date: Aug 2001
Location: Atlanta, GA
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I'm not particularly familiar with the SL, but the symptoms you describe sound like vapor lock. Are any of the fuel lines routed too close to a heat source? (exhaust, cylinder head, etc.)

1979 300 SD
350,000 miles
1982 300D-gone---sold to a buddy
1985 300TD
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1994 E320
not my favorite, but the wife wanted it
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