Stop Running

[tpweiss9953]

Trying to take care of a few problems with my new 911...

Sometimes when i turn the car off it still trys to run for a second.

Could this be a bad distributor cap?

Hopefully it is. Have a new cap, rotor, wires, plugs to put in.

[twistoffat]

Could be a faulty DME Relay or leaky injectors. When you turn is off its still getting fuel.
Do a search on "Dieseling" and you should find plenty of info

[Grady Clay]

twistoffat is ‘right on'.

Some tests you can do are to replace the spark plugs with 1-step ‘colder’ heat range.
Another is to use a tank of 100-octane (unleaded) race fuel.

Post images of your sparkplugs.

Best,
Grady

[tpweiss9953]

I believe the injectors were just recently cleaned. Car is going in this Tuesday for valve adj/gaskets/plugs. The plugs I purchased are Bosch WR7DC+ (Bosch Super Plus plug with copper core and yttrium added) Part number 999-170-156-90-M14.

Will order a DME and check that first. I will also post pics later this week of the plugs.

Race fuel, really?