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Old 11-04-2006, 04:39 PM
Registered User
Join Date: Jul 2006
Location: Newport Beach, California
Posts: 33
Second time starter

My 87 560 SL never start the first time. In other words it start than dies right away. When you start it again its fine.
Now I have to depress the accelerator about a third for it to start the first time out. So is it a relay or a pump problem or else ???
Also when cold the engine is noisy until it warms up, like for one minute or about as if the auto choke is faulty. Am I right or the car just need more freeway exercise and a little Techron ???
Best regards to all,
350SL, 300CD, 450SL, 450SLC, 560SEL, 560SL, SL500SL500R
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Old 11-04-2006, 04:53 PM
Bondavi's Avatar
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Join Date: Feb 2005
Posts: 316
Sounds like your fuel accumulator is out.
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Old 11-05-2006, 06:22 PM
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Join Date: Sep 2001
Location: Austin, TX
Posts: 563
Actually, I would first suspect the pressure regulator. It controls the fuel pressure until the O2 sensor has heated up enough. To find out what's really happening, you need some fuel pressure gauges and the engine manual. To understand how the fuel injection system works, you might try the book by Charles Probst, "Bosch Fuel Injection and Engine Management". It also has a troubleshooting guide.
Mike Heath
1988 560SL Black/Palomino
1988 300SEL Black Pearl/Burgandy
1984 500SEC Anthracite Grey/Palomino
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