× 1-800-946-2642 Home My Account Social / Forum Articles Contact My Cart
Shop Now
Select Your Car Type Sale Items Clearance Items New Items
 

 Engine dieseling. Not running well at low rpm.

 Created by: Bullet18
   Forum Width:     Forum Type: 

 Posted: Jun 12, 2019 02:50AM
Total posts: 9241
Last post: Aug 17, 2023
Member since:Jun 5, 2000
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
US
Can you elaborate on how the engine is running at low speed?  Was the car running OK until just recently?  What work has been done to the car recently?

Doug L.
 Posted: Jun 11, 2019 03:31PM
Total posts: 659
Last post: Mar 24, 2024
Member since:May 18, 2002
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
US
Too low an octane gasoline? Too much static advance? 

 

 

 Posted: Jun 11, 2019 11:47AM
Total posts: 834
Last post: Mar 7, 2023
Member since:Aug 15, 2002
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
US
Dieseling (run on) could be caused by a couple of things, a hot spot in the combustion chamber, high idle speed or improper timing come to mind.  A vacuum leak could be along the intake/exhaust manifold gasket, the throttle spindle seals/bushings or carb to manifold joint.  but if it were me, I'd look at timing first. 

 Posted: Jun 11, 2019 09:00AM
Total posts: 47
Last post: Aug 20, 2022
Member since:May 14, 2018
Cars in Garage: 0
Photos: 0
WorkBench Posts: 0
Ive got a carbed a+1275 in my mini. I think it has a vacuum leak because it did the same exact thing when when the vacuum hose came off the distributor. This time it isn't the distributor hose though and i cant find what it is. Are there any common areas fir vacuum leaks?