LA 145

[horse2292]

New carb,new battery from dealer. Cranked and ran fine. Came home and cut for 30-40 minutes then shut her down. Came back topped it off with fresh gas and want crank. Checked all the regular stuff. Then changed the spark plugs and fuel filter. With not fire at all. The plugs do have spark. The blades are not engaged. The gas cap is not clogged at the vent. Any other ideas?

 

[Sysop]

If there is no spark, replace the magneto. It resides under the top cover. Follow the plug wire.

 

[DT86]

If you have spark then the problem is fuel related.

 

[horse2292]

If you have spark then the problem is fuel related.

the spark was there but not a good dark blue color.

 

[horse2292]

If you have spark then the problem is fuel related.

Fuel is getting to the carb. It want crank with starter fluid.

 

[Sysop]

If the spark isn't hot enough, it won't fire. New plug, new carb, fresh fuel, new battery; the magneto is the only thing left in the mix that wasn't changed. When the new battery was added, it had enough juice to create a hot enough spark to fire. Once fired for a moment, it created enough heat to continue running as the battery level went down, and once shut off and cooled, it no longer had the fresh battery charge to create a hot enough spark. Giving the battery a boost may let it fire up again, but this really sounds like a weak spark. Spark+Fuel don't always make fire. The spark needs to be hot enough to do the job. Also, high octane fuel needs a hotter spark than low octane fuel, so this could have added to the condition depending on the fuel that was in it, and the fresh fuel that was added.

 

[horse2292]

If the spark isn't hot enough, it won't fire. New plug, new carb, fresh fuel, new battery; the magneto is the only thing left in the mix that wasn't changed. When the new battery was added, it had enough juice to create a hot enough spark to fire. Once fired for a moment, it created enough heat to continue running as the battery level went down, and once shut off and cooled, it no longer had the fresh battery charge to create a hot enough spark. Giving the battery a boost may let it fire up again, but this really sounds like a weak spark. Spark+Fuel don't always make fire. The spark needs to be hot enough to do the job. Also, high octane fuel needs a hotter spark than low octane fuel, so this could have added to the condition depending on the fuel that was in it, and the fresh fuel that was added.

That makes since. I will try and find one today.

 

[horse2292]

Okay bought 2 new magnito's and put them on. Set them like I was told. Same thing. Turning over and want crank. Pulled the fuel line to carb and it's getting fuel. I don't know. Ready to burn it!!!!!

If the spark isn't hot enough, it won't fire. New plug, new carb, fresh fuel, new battery; the magneto is the only thing left in the mix that wasn't changed. When the new battery was added, it had enough juice to create a hot enough spark to fire. Once fired for a moment, it created enough heat to continue running as the battery level went down, and once shut off and cooled, it no longer had the fresh battery charge to create a hot enough spark. Giving the battery a boost may let it fire up again, but this really sounds like a weak spark. Spark+Fuel don't always make fire. The spark needs to be hot enough to do the job. Also, high octane fuel needs a hotter spark than low octane fuel, so this could have added to the condition depending on the fuel that was in it, and the fresh fuel that was added.

 

[Richard001]

Okay bought 2 new magnito's and put them on. Set them like I was told. Same thing. Turning over and want crank. Pulled the fuel line to carb and it's getting fuel. I don't know. Ready to burn it!!!!!

horse,

What do you mean by: Turning over and want crank.

Do you mean that the starter spins the engine over but it doesn't start?

Have you checked compression?

Do your new coils give good spark?

After you try to start the engine, remove the spark plugs and see if there is fuel on them. If they are dry, then you are not getting fuel into the engine.

 

[horse2292]

I'm think now it might be the safety seat switch. Wouldn't it do that.

 

[bruceatlam]

If it's the seat switch, the engine shouldn't turn over at all ---- nothing should happen. Turn key and nada; starter should not function --------

 

[andrec999]

Are you sure the fuel is getting to the carb?
Because mine does the same thing once in a while., and the culprit was the fuel pump .-
I just blow air with the compressor at the entry port of the pump and it gets the pump running again.
It is worth a try.

 

[Richard001]

Are you sure the fuel is getting to the carb?
Because mine does the same thing once in a while., and the culprit was the fuel pump .-
I just blow air with the compressor at the entry port of the pump and it gets the pump running again.
It is worth a try.

This engine uses a pulse pump. Forcing compressed air into the inlet will most likely damage the pump.

To determine if the pump is working, just disconnect the outlet hose and crank the engine. If fuel comes out, then the pump is working.

 

[Gator6x4]

Put some fuel in a small squirt bottle, remove the air cleaner and while someone tries to start or crank the engine squirt a small amount of gasoline into the carburetor venturi tube. If the engine tries to start the problem is in the carburetor.

 

[andrec999]

The pump is very easy to change takes 15 minutes and it cost less than 20.doiiars. And it as been an issue with these JD