Technical After Burn.

[SHERMAN41]

Hello all, I just finished a major suspension renew, and a few new items up front ( alum, radiator, fan, plugs wires.)
Just put her back on the road after 2 months on jackstands in garage.
Now the is after burning ( deasling) don’t know why? Someone said timing, but I didn’t do anything to ign, diszzy or a timing belt.

What would cause this after burn, and how to eliminate it.
thanks for any help, and all be safe out there.

 

[s130]

Car or fuel injection?

Possible causes:

Timing

Spark plugs running too hot - did you change them?

Badly coked/carbonised combustion chamber. This increases compression ratio and in very bad cases will cause the engine to run on after the ignition is turned off.