QUOTE(davidke20 @ Mar 17 2015, 08:04 AM)
Solenoid kong will judder EVERYTIME u switch off the engine. It's likely to be overflow IMO. Before jumping into "tuning" your carb, it's advisable to give it a carb cleaning process. I solved mine with a bottle of electronic contact cleaner. I know there are specific carb cleaner spray out there, but I had bad experience with the carb cleaner spray which I wouldn't like to share it publicly, hence Alcohol base solution is my next best bet. The usual spray and vacuumize of throttlebody several rounds at high revs. Once done, change sparkplugs. Ever since, never happen to me anymore
On the worst case scenario, it could be the solenoid START to kong, where the shaft weren't able to extend fully when engine's off. Which you have a very good chance in reviving it with electronic contact cleaner spray. It could be stains on the shaft that prevent it from thrusting but that's all. Tuning carburetor is the last thing I do, and I only trust CO reading where I need to send my car to a magician who has a machine/dyno machine to do so.
Others who always claim which sifu very powderful, by listen to the engine sound, see the RPM, feel the engine vibration, smell the exhaust fume ady can tell whether it's rich/lean is a big question mark to me. On a very bad situation where a petrol car start to emit black smoke, that ofcourse even a blind person also can tell it's running rich. But hey, how do you know it's not because of lean AIR that causes the RICH on FUEL?
My carb tuning never been kacauing me other than, overhaul job, change from 4toto back to stock - whilst other surroundings been upgraded such as valve springs, lifts, and also weird setup of exhaust system
Other than the mentioned, the carb has been always running on the same setting after got out from the O2 reader and or dyno machine
Do you get what I mean?
Thanks bro for the advice!
Story before dieseling occurs.....
First, i went for carb tuning (no machine aka manual
) to reduce my FC....since my exhaust emits black sooty smoke everytime i press the gas pedal and FC is hella high! (RM20 [RM2/L] for 60km)
After carb tuning, used the car about a week with good FC. But 1 problem emerges....pinging sound when accelerate. I went to my mechanics to tune ignition timing with timing light. The pinging almost gone except when climbing hills with with a slight pinging. My mech said slight pinging knock is okay. No dieseling problem yet.
Then, i went DIY changing the o-ring of distributor since there's quite of oil leaks. The distributor position was marked with correction pen. After finished replacing o-ring, i turned the distributor slightly 1-2mm anticlockwise (from marked position) therefore retarding timing some more. No more pinging even at hills.
Then, the dieseling started occuring occasionally.
Mar 17 2015, 07:26 AM
Now continue completing exhaust system upgrades after got enough budget. 
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