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

Sounds like you have oil in the gas galleries of the carb. Fill it with gas turn gas valve on and try starting it a few times with starting fluid to help rince/thin them out so gas can flow through them again. It may smoke more than usual for a while. Dont keep it running on the starting fluid though as it has no lubrication for the cylinder/rings and could scar the cylinder walls. If that doesnt work you can remove it and try to do it manually with a can of carb cleaner or get a new carb. They're on ebay for about $20 or a small engine supllier near you will have one for about the same or a little higher.

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)

Have you checked your oil? You need pump oil half way up in reservoir. Open plug on top of pump and check oil. Pump takes SAE 20 or 30

Next, open oil plug below engine and check your oil level. It should come up 1/2 way on dip stick. Engine takes 10W30. Don't turn washer on its side or upside down to drain oil or oil will run into carburetor.

Is the water turned on? Are you holding gun trigger open while starting? Pump needs water flow. DO NOT tie gun trigger open with wire and then start engine. That gun will flip around and shoot a hole in your leg.

If the engine starts, then you have gas, spark and compression

If engine won't stay running, the exhaust port might be clogged, or the carburetor is not letting in enough gas, or gas is not flowing to carburetor.

Check the screen over exhaust port > is it dirty or clogged? Clean with WD-40 or break it out with a screwdriver.
Remove gas filter below gas tank >>> it has a hex bolt >> loosen bolt >> the gas should come flowing out >> put it back if gas comes out
Next remove rubber gas line feeding gas to carburetor >> gas should flow out this line too >> if flows then put it back.

What about your air filter? Take it off. See if engine fires and runs without air filter. Air filter may be clogged.

While air filter is out, you can see open port to carburetor. Spray some WD-40 into carburetor. Fire up the engine. It should spark real healthy on the WD-40. Keep spraying WD-40 into carburetor to see if you can keep engine going. Don't forget to keep gun trigger open so water is flowing and pressure is not building in pump.

If engine keeps going with WD-40 but dies without it, then your carburetor is very suspect. You might need a new one.

If engine will not keep going with WD-40, then the spark is very suspect.

Change spark plug. Try again. If it doesn't fire up after that, you need to take it to the shop for repair.

Recurring issues with honda engine no start. Engine was thought to be out of gas however engine was actually shut down by oil alert. Check/change oil to reset, or unplug wire from oil alert and check engine. Vacuum in fuel system due to faulty fuel cap. Loosen cap to allow air in tank. Water in fuel. Water will condense out of the fuel in fuel container and will be introduced into tank. Water is heavier than fuel and will enter carb bowl. Check engine fuel tank with flashlight for signs of water, remove fuel bowl (shut off fuel) and clean. Spark plug is rarely issue, however could be wet from too much choke. Good luck

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.