I'm brand new to the Porsche scene. I just became the owner of a 91' 964 cab. I took it out for a quick spin this am, approx 20 min. Pulled into driveway, car is running perfect, and turn it off. I get my wife to go out for another longer spin. All in all the car sat for 15 min. When I go to restart, it turns over. All lights work. Battery is turning over the car fine (until I drain it). I turned the thing over and over without a single hint of starting. I pushed it in the garage and let it sit for 2 hrs. I went out to try and restart and the car starts instantly.

Any ideas as to what it could be?
Any common Porsche issues that a more seasoned owner knows to look at first?
Do these cars have vapor lock issues? A fuel filter perhaps?

Thanks for any help

 

First thing to check/replace is the DME relay in the front trunk fuse box. Welcome, by the way- Pictures of your car are mandatory!

 

Check and or replace Fuel Accumulator

 

No such device on an EFI car (which our 964's are unlike the 965 in your avatar).

 

I found that I experienced hard starting on a hot engine when my DME Adaptation value was off. There is a thread here that discusses the DME Adaptation using the Scantool.

Cheers!

Jim G.

 

Thank you for the input. I'll look into these suggestions. I'm very excited to learn about this car! I just ordered a reference Manuel which should help with some of my basic knowledge gaps!

I'll upload some pics hopefully soon

Thnx again