how long of runnng fine then starting its surge problem? Could be a air leak, does it do it under a load, or no load situation ? Check the air filter. Is it puffing smoke when it sugrges ? if so, what color smoke? Blue is oil burn, black is fuel, so if puffing black smoke, you have carb problems. When it starts to surge, can you engage the choke and smooth it out? once again, that would be carb problems... You may be suffering from vapor lock. Try partially unscrewing the fuel cap to allow air to enter the tank. If the engine stays running, replace the fuel cap. Another thing to try is cleaning the bowl vent on the carburetor. Also, check the filter bowl. Some Vanguard engines have a collection bowl that catches particles and then "sucks" the fuel up through a filter. Mine became clogged with white particles. Engine would start, run for a minute then die. It would repeat till I discovered the fuel bowl issue. My Kawasaki 17 HP engine was doing the same thing. It has a vacuum operated fuel pump. The fuel pump's air vent was plugged with dust. The air vent is on the back of the fuel pump so you have to remove it to see the vent. Just pour a little gas on the vent and dust off with an air hose. = =
Dieseling Engine overheating? Engine idling too high? Try a higher octane fuel?
The #1 cause of cold air from the heater when the car is stopped, or the engine is idling, low engine coolant levels.
This is very normal. The extra drag on the engine caused by the alternator and the a/c causes the engine to slow. The engine speed is most likely then compensated by the e.c.u to a pre-set value, thus causing the revs to rise.
Sonds like the idling speed is too low - it can be adjusted (Usually with just a screw driver) if you know the right screw to turn to give the engine higher idling revs.
Kia, Kawasaki.......
Kawasaki
When the engine 4jg2 starts then its stops it is due to a mechanical failure.
Kawasaki zx10r
vacuum leak?
This can be caused by the engine not getting enough fuel, or idling too low. It would be best to check with the fuel system and make sure all parts are functioning well.?æ
I experienced this same problem before too. The security system could be the problem. The imobaliser shuts of the car if it thinks there is a problem with the ignition(if it was hotwired).
you have one or more cylinders not firing causing imbalance. check for spark at each cylinder.