I don't know why my engine keep's running after I shut it off. I've check the timing, fuel mixture, exaust (for leaks), and vacume leaks, and I can't find any thing wrong. But it still runs after I turn the key off. It also runs backwards!!!! What the hell is going on?

Rock on Z people

Matt-

What kind / year of car do you have?

- Jeff

Sorry, I left that little part out...

L-28 F54 block with flat top pistons .020 over bore, N42 head with a performance came ( 460 lift 273 duration), performance springs new rocker arms, steel valve seats three angle valve job, HKS 2mm head gasket, MSA header, 2.5 inch exaust dumping into a dyno max muffler, round top SU rebuilt carbs with SM needles, electronic distributer, Stock air cleaner box with K&N air cleaner. I think that is every thing.

Just incase you were wondering I have about a 9.2:1 compression ratio. that is what the HKS 2mm head gasket is for it lowers the CR so I can use regular pump gas.

Matt-

That list would make me think it may run hot -- does it?

Be sure the timing is set correctly for your use. Check the fuel

float level and see if it is closing all the way when the bowels are full.( hot engine .. alittle more gas .. run on.. even without spark)

- Jeff

The engine runs really cool. I'd guess about 160 F on a hot day, I put in a new radiator with the engine build. As far as the carb floats I check thoes before I put them on the car so they should be fine. I just double checked the timing today and its fine (about 13 degrees btc).

Any other reasons that is might do that? thanks for the help Jeff

Matt-

Is it deisling? (bad speller)

If so then its your timing. I would check that next.

I'd guess the timing is too advanced. 13 BTDC seems a lot to me.

Yep its deiseling... I just checked the timing today. I have it as advanced as it will go with out "pinging" under heavy load. That's what the guys at MSA recomended

Matt-

It costs you nothing to lower it and see if that helps.

good point Carl, I'll give it a try!

Matt-