Originally Posted by thinice
little troubleshooting help now-
A. When the engine is hot-hot (lotsa revving with no movement) it'll diesel when you shut it off (I found this to be a seldom issue, out of about 20 starts-and-shutdowns it dieseled 3 times. (this could be due to load and frequency of starting and stopping of the engine)
B. When the engine is hot, (as hot as "a") it started to die on me - a quick tap of the accelerator and it idled fine. (this was only 1 instance out of the 20)
C. I have a unit that I can't idenitfy - maybe somone can help, it says something about servo arm adjustments- it's kinda like a big-black solenoid or diaphram almost, it's got a ball-chain linking it to my accelerator/throttle linkage. it's to the left above the master cyl - hard to miss really. any idears?
a: with a HOT engine shutdown, and therefore hotter combustion chambers, you could expect some dieseling. If your car has a good cooling system, you could let it idle cool down after a big rev session first. Also, your timing may be a few degrees too far advanced. BUT I wouldn't change it if the performance was good, just don't shut it down hot. If it doesn't do it after driving on the road (when cool) don't worry.
b: a hot engine transfers heat to the carby thru the manifold. This causes the fuel to boil, creating a "vapour lock", which results in fuel starvation. It's a weird one because you'll check the car over and 2 minutes later it'll work fine. You could have had a mild case, plus it was only 1/20. If it happened regularly, you could fit a heat insulating plastic/wooden spacer plate under the carb.
c: not sure on the black solenoid "thang". Pull it off and see if your car still works
Is it on your carby or firewall? Not a vac sec diaphragm? or automatic choke?