I can't get my weber to stop dieseling. I have retarding to timing to just above where it starts to run bad, and thought that would help but it has not. Has anyone else encountered this problem?

I remember having this problem when I installed my weber, I think it turned out to be the idle mixture screw.

Retarding timing excessively increases temps possibly making dieseling more likely.

 

Idle speed too high will too.

 

If it still diesels w/correct timing,idle speed and idle mixture adjustment,try one of these:

http://www.ebay.com/itm/Weber-32-36-DGEV-ICU-Idle-cut-off-valve-solenoid-fuel-shut-off-valve-DGEV-/400375516204?pt=Motors_Car_Truck_Parts_Accessories&hash=item5d383d8c2c&vxp=mtr

I dropped my idle, and made some mixture screw adjustments, and will report back. Thanks for the link as well. I may get a solenoid for good measure.

Run-on eliminated, although it smells rich. Am going to lean it out a tad to try and find the sweet spot. If only I had a timing strobe.