Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Engine model number? If you have spark and fuel in the cylinder and it did not fire, it may be out of time. What does it have for a timing key in flywheel or ???
My response is showing as customer!
The cylinders suck the fuel from the carburetor. What is model number of engine? Only reason fuel would not be sucked in, if there is no intake vacuum. If you hold hand over carburetor do you feel it sucking?
Is this twin engine? If you remove spark plugs, do you have compression?
If it has compression, remove rocker covers and check the valves.
Check the valves
You can have compression, and the intake valves are not opening, so the fuel is not sucked into the cylinders.
You say you don't feel suction at carburetor, so intake valves may not be opening
You still haven't given me a model number. Did you see the link I sent on the Wisconsin models? There will be a valve cover somewhere, that will let you look at the valves.
The crankcase vent should lead to it.
This VH4G, see page 27 , showing valve covers. But sheet metal has to be removed.
If y don't have intake suction,there will be no fuel from carburetor!
You said it did not fire on starting fluid, there is something else wrong!
Will it fire if you spray starting fluid into cylinders?
If you look into the intake holes. do you see valve movement?
Look in the intake to see if you see the valve or stems, and see if they are moving.
It takes fuel, spark, and air , at the proper time for engine to run. Seems like spark , compression, and air are good! And will not fire on starting fluid, so its timing or valves in my miand. Did you look at the VH4g manual link I sent? Does it look like right engine?
I need t be out for an hour. Will check back later.
Here is newer model. Please rate to close the question.
Please accept to close, or I don't get credit.