2007-01-28 05:34:11 · 12 answers · asked by brent w 1 in Cars & Transportation ➔ Maintenance & Repairs
adjust the timing
2007-01-28 05:39:18 · answer #1 · answered by Kwijibo 3 · 0⤊ 2⤋
Check your carburator.. it may have an anti-diesel solonoid on it
this is a lil electric gismo that kicks up a notch when you are running idleing.. and it kicks off when you turn off the car lowering the throttle more to prevent dieseling... They often become stuck, or non functional and need replaced.. its a simple screw on part if thats what it is.
Addendum: A few people here are correct changing the timing will do nothing.. the ignition is OFF hence no spark hence timeing dosent matter. I'm skeptical of adjusting the idle.. theres no real reason the idle should have changed significantly enough to make that realistic.. except for the case of a solinoid antidiesel valve being stuck (BTW the main idle response is usually done on this solinoid anyway and is adjustable as well.. The Carb idel adjust wont override the Solinoid adjust on the low side) or something in the throttle linkage getting stuck in a slightly more open position... There is the possibility that a little WD-40 and a stronger throttle linkage return spring might fix it too...
2007-01-28 05:57:46 · answer #2 · answered by darchangel_3 5 · 1⤊ 0⤋
No one so far has addressed the reason for a vehicle "dieseling" after the ignition is shut off! It is because there is still gas getting into the combustion chamber. The chamber is hot and will spontaneously ignite the gasoline with out a spark (just like a diesel engine, yeah?). There are a few to a dozen reasons for this to occur. Ask a good mechanic to check it out. If it started suddenly, there is probably a carburetor problem, but that is just speculation. If you don't know why your truck is dieseling, you probably can't fix it yourself. Sorry.
2007-01-28 11:04:27 · answer #3 · answered by kfhaggerty 5 · 0⤊ 1⤋
There's a little solenoid on the carburetor that shuts the throttle down when you turn the key off to prevent dieseling on those things.
They go bad a lot.
2007-01-28 10:41:32 · answer #4 · answered by Nomadd 7 · 1⤊ 0⤋
Mr. Know It All is the only one who is correct, all the others are talking about "pre-ignition". Dieseling occur es AFTER the ignition is OFF! Changing the timing will do nothing.
2007-01-28 06:38:16 · answer #5 · answered by Billy TK 4 · 1⤊ 1⤋
Retard the spark a little.It could be that the spark advance diaphram is inoperable.Check ,and if so replace and reajust idle.A missing air dam will also cause a over heat problem.Also check for tight vacuum line connections.
2007-01-28 05:48:25 · answer #6 · answered by (A) 7 · 0⤊ 1⤋
Reduce your idle speed.
ADDED:
Changing timing will do nothing. There is NO spark with engine switched off.
ADDED#2
Dieseling is caused by self ignition of the fuel/air in the cylinder.(NOT SPARK)
2007-01-28 05:38:04 · answer #7 · answered by Mr. KnowItAll 7 · 1⤊ 1⤋
from my experience, the easiest and cheapest fix is to just kill the engine while it is still in drive if it is an automatic trans.
2007-01-28 12:42:06 · answer #8 · answered by chris n 1 · 0⤊ 0⤋
dieseling is CUS whether you have
carbon in the combustion chamber
engine out of timing
too "hot" spark plug( unappropriated)
2007-01-28 05:46:15 · answer #9 · answered by Anonymous · 0⤊ 2⤋
Don E is right on the money.
But first, check your thermostat. you may be overheating and not know it! That can easily cause dieseling.
Any problems with vapor locking or flooding?
2007-01-28 05:51:45 · answer #10 · answered by Ram 2 · 0⤊ 2⤋
the easiest fix is to buy mid grade fuel or better, not the cheap stuff.
2007-01-28 05:47:04 · answer #11 · answered by Anonymous · 0⤊ 1⤋