Dieseling why?
Thread Starter
Registered User
Joined: Oct 2004
Posts: 7,743
From: Forest Ranch Ca.
Dieseling why?
This just started today, keeps running after I shut it off. It may stutter and buck for 4 or 5 seconds after shut off. Why would it start now and should I worry about it or take care of it when I get home ? About 1500-2000 miles more before home... Thanks ...Tedd
Registered User
Joined: Jan 2009
Posts: 4,086
From: Too close to Toronto!!
And the idle speed might be affected by your present altitude or fuel quality. Seeing as how you are on the Mother Of All Road Trips... d.
Last edited by Yellowstatue; May 10, 2014 at 01:18 AM. Reason: Roger left off a d. for Tedd
Connoisseur d'Junque
Joined: Sep 2010
Posts: 21,183
From: The Hudson Valley
I think elevation is a good thought. Have you changed elevation much since you left? If so, then the idle may need to be adjusted, or the carburetor jets may need to be changed for optimal performance.
How hot has your engine been? Excess heat can help cause run-on.
It's unlikely you developed new carbon in your cylinders (another possible cause of run-on) after a road trip, as that's supposed to burn it off.
- Eric
How hot has your engine been? Excess heat can help cause run-on.
It's unlikely you developed new carbon in your cylinders (another possible cause of run-on) after a road trip, as that's supposed to burn it off.
- Eric
Registered User
Joined: Feb 2009
Posts: 11,804
From: Brazil Indiana
Till you get to the root of the problem, You can turn it off while in gear and many times this will keep it from dieseling. This is not much of a solution but at least it don't look so bad when in a parking lot.
Administrator
Joined: Oct 2009
Posts: 42,385
From: Poteau, Ok
x2 on bad gas or altitude and turning it off in gear. Throw some fuel system cleaner of your choice in tank. Make sure your idle is not too high and the carb bottom butterflies are closing properly at idle.
Thread Starter
Registered User
Joined: Oct 2004
Posts: 7,743
From: Forest Ranch Ca.
Thanks guys. I'm on my second tank of gas with the same results but we have been up and down in elevation like a yoyo. I will get the hi test next fillup. Getting between 12 to 15 MPG depending on whos driving.
..Tedd
..Tedd
Registered User
Joined: Oct 2012
Posts: 1,067
From: North Delta, BC
If your running lean at altitude, the carbon on your heads may get hot enough to fire the gas left sucking even more fuel through the carb while dieseling. I agree with turning it off in gear but I would check the plugs to see if it is running too hot. Just my 2cents.
Good luck Ted.
Good luck Ted.
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EmilyAndTheJet
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