My 2000 watt buffalo generator wont start. has fuel, oil, new spark plug.

Possibly bad gas. Use SeaFoam fuel system cleaner. Check spark plug.

Our motorhome Onan 5000 Marquis generator will turn over and try to start but fails everytime we test. We have primed, gas and oil are fine and we have new spark plugs. We also changed the gas filter on the generator. Any suggestion? Thanks, Loretta

if it has air fuel and spark then check the compression. if it has all 4 of those then it will be a timing issue but I am willing to bet you are missing 1 of the 4.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

what a **** generator, worked for 100 hours and now wont start anymore.
did all the checks and replacing of spark plug and oil etc, simply wont start, ****, ****, ****..... service is horrible too. they just give you the runaround.

These type of gens have a low oil shutoff. Check the oil. Always have spare spark plugs, a cheap fix. My gen always wanted a new plug every year. Look to see if it has a fuel filter.

Engine will

not start

1. Low on fuel or oil. 1. Add fuel or oil.

2. Ignition switch in "Off"position. 2. Turn to "ON" position

3. Faulty spark plug. 3. Replace spark plug.

4. Choke in wrong position. 4. Adjust choke accordingly.

5. Fuel shut-off valve in closed position 5. Open fuel shut-off valve.

6. Unit loaded during start-up. 6. Remove load from unit.
7. Spark plug wire loose. 7. Attach wire to spark plug.

The electrical coil, that is the spark plug cable with the coil,change it.

Idle speed jet or passage and/or high speed jet/passage is clogged. Remove the carb and inspect and clean thoroughly, then re-install. Set idle and high spped screws approx 1 turn and tune to run smooth from there.

Dump ALL old fuel out of tank, you might have got a clog in the fuel line, carburator, fuel valve. Remove carb bottom Sediment bowl then spray Carb cleaner thru the gas inlet AT the carb 3-4 secs CAUTION: KEEP YOUR HEAD BACK.. that cleaner hurts if you get it in your eyes... and NEVER SPRAY A HOT ENGINE (np with yours tho no start) Refill tank with NEW fuel (or strained at least if emergency remote repair) Place a suitable catch container over gas inlet line to carb (at carb) open fuel valve chk for fuel FLOWING (no dripping) into container. replace fuel line to carb start as normal
if not firing still chk that spark plug, might need cleaning now that rest is ok.

Is the spark plug black?
It won't run well with a carbonized plug.

Is the main jet in the carb plugged?
If the plug is dry after trying to start it.....your fuel is not getting into the engine and most likely a plugged carb jet..
Also.....Is the fuel switch working...is it in run position?

If the generator has sat for a while with fuel left in the carb/fuel tank.......the most common problem is a plugged varnished dirty carburetor in need of a good cleaning.
Always shut the fuel off and let the carb run dry (run until the engine stops)before storing.
Add fuel stabilizer to any remaining fuel or drain the tank before storing.