300sl hot start problem - Page 2 - Mercedes-Benz Forum
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post #11 of 15 (permalink) Old 06-24-2019, 10:36 PM
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Thnx again!
I’ll try to test csv this evening.
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post #12 of 15 (permalink) Old 06-25-2019, 10:55 AM
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I was not able to remove the CSV, 3 injector lines and a tube of the ISV are in front of the second bolt. I’m going to remove the injectors and the CSV at once when the weather is bad.

I noticed that the ISV gets 12v as soon as you turn the key, even before you start the engine. Not sure if that is supposed to be like this.
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post #13 of 15 (permalink) Old 06-25-2019, 04:22 PM
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Originally Posted by Christian Omloop View Post
I was not able to remove the CSV, 3 injector lines and a tube of the ISV are in front of the second bolt. Iím going to remove the injectors and the CSV at once when the weather is bad.

I noticed that the ISV gets 12v as soon as you turn the key, even before you start the engine. Not sure if that is supposed to be like this.
Control module varies the current to ISV. Voltage is constant.
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post #14 of 15 (permalink) Old 06-25-2019, 10:05 PM
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Originally Posted by robm.UK View Post
Control module varies the current to ISV. Voltage is constant.
Makes sense :-) thnx!
I'll be back once I tested the injectors and CSV
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post #15 of 15 (permalink) Old 07-06-2019, 09:57 AM
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This afternoon I was about to test the injectors and CSV when I noticed a fuel smell after removing the Air Filter.
Pushing the sensor plate down increases the odor and I noticed that the inside of the housing was a little wet.
Is it mormal that there is a little bit of fuel in the housing?
The only thing that I can think of is that the plunger is leaking. Fuel distributor was refurbished and all the sealings were renewed.
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