I have been having problems with a longer time to start my 560sl 1988
since it got colder during the first cold start of the day or when left sitting for a while
15 seconds , then idles fine
Checked the cold start valve
took it out hooked it up and started car no mist /spray
What voltage goes to the valve , so I can jumper it out to find if it is the valve or some other circuit that feeds it?
Is there any fuses in the circuit?
Any help would be appreciated

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[B]Mike Y.
00 sl500 sport
88 560 sl (sold)