after my engine warms up i have to shut it down in gear to keep it from dieseling. what can i do to stop this without tearing my engine apart, so whats the best stuff you guys have found to clean carbon out?

 

STP gas treatment is great. Are you sure your timing is set properly?

 

the timing right now is off but its only because at recommended it does it even worse. i asked about additives because i had watched an infomercial about Z max...

 

If your timing is too advanced it'll do that, what's the degrees?

 

i forgot, i think its advanced by 2 or 3 just to keep it from dieseling. i also smell like gas when i get out so i think i'll probably adjust the carb a little. i just need someone who knows what they are doing to show me. any ideas?

 

Ok, well, if it's dieseling don't advance the timing, try delaying it by 2-3 degrees instead. As of the carb, it shouldn't cause it unless it's running too rich. Adjust the timing first and then once you have that ok, adjust your idle mixtures to the highest rpm and smoothness. It takes a little time but it's worth the try. I hope this works man.

 

Just because the motor diesels ( aka run on ) doesn't mean it's shot.

The biggest things that seem to cause this are

1. Over advanced engine timing.... set the timing back to stock specs and see if the problem continues.

2. High idle - Seems to happen more with carbed cars...a high idle will cause the engine to keep running after cut off as well...



As for additives...there is NO cure all additive, and "info" mercial's are usually the exact opposite of that...

For a good all around fuel / engine cleaner, go pick up a can of SeaFoam at NAPA...I swear by this stuff.

Cleans carbon, and fuel system like nothing else I've used...but AGAIN, it won't cure a problem such as over advnance timing.



HTH

 

thanks alot, hopefuly soon i'll be throwing on my edelbrock intake and can really get into getting it to run again, i tried for a long time to get everything right before and it still sucks so it discouraged me. oh and i know that the engine isn't shot, its just been this way so long...