Honda engine will not start,,,new plug, new gas, new oil

Hahn does have a little oil cut off switch. The engine will not start if it is low and oil fill it and try it

Is there a spark at the plug?
Is there good induction and fuel reaching the combustion chamber?
Is the choke, strangler or cold start working?

An engine needs compression, timing, the right amount of fuel a good spark and a decent cranking speed in order to start.

A side valve easy start engine is likely to have a low compression pressure as would an ohv engine designed to run on poor fuel. Other types of engine with low compression but a good cylinder leakage results probably has a dry or fuel-washed bore and adding a little oil into the cylinder can improve matters.

You have trash in your carb....remove the carb and inside the bowl remove the float and needle valve. clean the valve and seat and replace...should fix you up

If there is air in the tanks, it will be harder to crank, drain air out before starting, Also check spark plug. Sometimes i put gas where the plug goes, just a little pinch of gas though. put spark plug back and give it a few cranks.

did you pull the spark plug out and clean it ? if you did , did you also put the starter cord and turn the motor over without the plug installed to get rid of the 2-cycle oil out of the cylinder ? if not do so.

You might get lucky with new spark plug(s) and I assume you mean 2-stroke oil. Otherwise, drain tank and replace any fuel filter in system, then re-try with fresh gas and new plug (s)

Try a touch of starting fluid right into the carburator by taking the air filter off. If it then starts but wont run or stay running, the reservoir below the carb should be removed to clean at and the pinhole in the intake tube above the bowl nut. This is the most common problem with lawnmower start problems, the pinhole can be unplugged with one wire from a wire brush. Be careful with the gas, at least pinch off the gas hose with a vise grips while removing the carb bowl.. Never use a droplight around gasoline. most lawnmowers have no mixture adjustments, so it is a matter of cleaning the carb, tank, gas lines. Some oils in gas mix systems settle and clog after less than one season. Spark can be tested by sight, remove the plug and use a clip-on ground wire from spark plug body to metal on the engine with the plug wire connected.

i've found on hondas when the there is a no start problem when the engine spins over fine. when the plugs wear out the cylinders get washed down with gas and it sounds like it has no compression. if this is what its doing put a little bit of oil in each cylinder not too much though then put new plugs iin it, however if there is no spark at the plugs it's probably the distrubutor

When you turn the key to start, the engine cranks over? You must check for spark and fuel, if one is missing, the car won't run. Pull a spark plug, with plug wire connected and plug on a metal surface of the engine, have someone turn the key to start, while you watch for spark at the plug. It is easiest to see spark with car out of direct or bright light. If you have spark, attempt to start several times, pull a spark plug and check for evidence of fuel (wet) on plug. Let me know what you find, we can then continue.

oil is on the spark plug , so I change it and replace it with a new one and it did the same thing. This on a honda trash pump.