It sounds as though the mixture is way too rich. Is the choke stuck on or malfunctioning? With is dry spark plug but fuel in the carburetor, try turning the fuel valve and choke off and then with ignition on and holding the throttle at least 1/2 open, kick the engine over several times. If it starts under these conditions then perhaps the float(s) in the float bowel have leaked and are full of gasoline causing the fuel to flow continuously into the throat of the carb then into the engine. It probably is some sort of carb mixture setting, choke or needle valve/float problem.
SOURCE: pressure washer stalls
Pressure washers work under very dirty conditions, no wonder they encounter engine problems. Here are a few pointers from a former pressure pump tech. The unloader is a source of engine overloading however this can easily be checked with a pressure guage attached to the gun with a tee fitting having the guage and the normal tip used for the unit. The pressure should never rise over rated pressure. The pressure should drop considrably when trigger is released. The life of the pump and engine can be increased by setting max pressure to 75% of rating. Most engine problems are from following conditions:
Leaking or misadjusted valves; clogged muffer /spark arrester; weak spark coil that is about to fail completely; kill switch/oil sensor wiring and or sensor mal function; gas cap not venting properly causing vacuum in tank and wet or dirty air filter.
All these problems easy to check, fastest repair is to disconnect oil sensor wire to check oil safety system. Then temp replace coil with known good coil. Loosen muffer bolts to check for clogged muffler. Temp run engine without gas cap to check for vacuum. Finally if everything fails, run the engine with carb cleaner spraying directly into the intake. If the engine continues to run with carb cleaner then the problem is fuel delivey and faulty carb. enjoy
SOURCE: Help with my ducati rotovator 2 stroke petrol engine
The simple things are always the last to try....
Was told that the replacement of the HT lead was a major task, seems that this is not a serviceable item but could be done a a major cost...Used electrical insulation tape to wrap the lead after cleaning with an electrical cleaning spray. Seems to have done the job Rotovated the 100m2 plot in no time.
Hope this helps all you others.
SOURCE: 98 cr 125 has spark and gas but wont start. seems
you should open the carb and check the floaters and the pin they control.Then adjust the float height and test it before you put it on the bike.Empty the gas from the engine 'cause it will damage the crankshaft's oil seals.
SOURCE: My mini tiller has a Tecumseh TC200 engine. I can
If the crankshaft/flywheel alignment pin is sheared the firing will occur at the wrong time. Check that by removing the flywheel.
SOURCE: Carb (Mikuni) flooding on Yamaha Vmax motor cycle
You will have to adjust the float pin of tht particular carb and don't remove them off the rack..just pull them out of the engine and work on the one tht needs attention.
Hope this helps!
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