74 911 difficult to start

[ken]

My 74 911 is tough to start. I believe that the iginition coil is bad. I am having a difficult time finding a replacement from Bosch. Any help on rechecking the original coil and/or a replacement coil instead of the Bosch would be greatly appreciated. Thank you Ken

[Loren]

Why do you think it is the coil? These cars are notorious for stuck cold start valves.

[ken]

Why do you think it is the coil? These cars are notorious for stuck cold start valves.

<{POST_SNAPBACK}>

How can I trouble shoot a cold start valve? Thank you for the reply.

ken

[dohertycm]

Why do you think it is the coil? These cars are notorious for stuck cold start valves.

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How can I trouble shoot a cold start valve? Thank you for the reply.

ken

Remove the air filter, and when someone is starting the car, push up on the plate a couple of times.

This will let you know that you have a pressure leak in the fuel system if it starts....but be careful because you

can flood the car as well...so dont do it alot.

check your vaccum lines and all your rubber. I had the same problem and it turned out to be multiple airleaks.

As well as a fuel pressure problem, -- to fix this I just threw parts at it....new check valve on the fuel pump, new fuel pressure regular, new fuel filter...

Hope this points you in the right direction....