Bah =/

[NailZ69]

im having a problem with the new maro i bought...i need exaust pipes from the cat back..let me know if u have any..

..and the problem is.. when u start it and drive then go to turn it off it sptters like it wants to keep running..sometimes it does it once or twice..and sometimes it acts like its not gonna stop...whats causing it to do this? how do i fix it?


thx,
NailZ

[korndogg]

well the sputtering is dieseling....my truck does that sometimes. someone told me how to fix it but honestly i forgot.

[GTStang]

The problem is called dieseling and it is usually caused by your timing being off. Try setting your timing agian. And this time use a timing light! LoL

[hellraiser319]

what kind of engine and intake system (carb, tbi, tpi, etc)? could be timing or it could be running overly rich. i have an 84 with carbed v8 and the choke thermo was dead and would always stay closed and when it was warm it would always do that when you shut it off cuz of it bein rich from choke bein closed.

[4onFloor]

dieseling also happens when your engine runs too hot, but you usually only on carbed engines. assuming this is carbureted, what happens is, the pistons and combustion chamber get so hot that after the key is turned off and as the engine winds down, it's still pulling gas from the carb, then the fuel ignites on contact as it hits the combustion chamber

[NailZ69]

so what do i do to fix it?

[osucordell]

dieseling could be caused by a number of things. Your idle speed could be set too high, timing off, overheat (check thermostat, radiator, water pump if that's the case),solenoid at the side of the carb could be fucked up.

I'd say just start checking these devices and see if you can't figure it out, if that doesn't work then I have another idea but it's a long shot.....

[NailZ69]

well i know it's not overheating..so go ahead and cross that out

[blueturtle]

someone told me it was from too low of octane when i was running 87 so now im running 91 (too cheap for 93 still lol) and it only does it to me once in a while now and only a quick spudder

[NailZ69]

well when i fist bought it..i filled it up with 93 for $31 something and got 18gallons..it didnt do it..now for the past few days i HAVE been running 87....maybe thats my problem

[NINÅ]

Originally Posted by NailZ69

well when i fist bought it..i filled it up with 93 for $31 something and got 18gallons..it didnt do it..now for the past few days i HAVE been running 87....maybe thats my problem

Run-on can be can be caused by carbon build-up.
I had the same symptom with my 78. I inadvertantly repaired the problem one day when my thermostat stuck closed. The overheating (300*) caused it to want to stall, but because I have a "refuse to lose" attitude I kept my foot in it. The high temp and nitro type rattling caused a large cloud of carbon smoke to exit the exhaust. From then on the problem ceased.

[hellraiser319]

normally if your engine is basically stock, you should run 87 or 89 tops. if you advanced the timing or did headwork or anything else that needs higher octane, then go and use the 93. 93 on the stock engine isnt good for it cuz its set up to accept the lower octane fuel, in accordance with emmissions regulations crap. thats all i can remember for now

[Chevyracincamaro]

go with a higher octane, that sounds like the problem. but like hellraiser said, it shouldnt really NEED the 93 unless its been toyed with. i would look into where the timing is and maybe carbon build up on the pistons...

[NailZ69]

i dont feel like calling my mechanic for such a stupid problem, i just put higher oct in it and it hardly does it anymore so i'll leave it at that..

..besides that fact im getting some police series flowmasters tomorrow!!! i found a 3rd gen cop camaro with all the mods abandond so im taking everything from it >=)

[Chevyracincamaro]

they made a third gen pursuit camaro??