89' 50hp force won't restart after hot.

[jholma]

This engine always starts perfectly. And runs great. But after running a while. If I shut down the engine, it is very hard to restart. I have to disengage the controls, and push the lever all the way full. After alot of cranking, it will start. I was thinking, it might be the coils, breaking down. Not sure. Any suggestions would be wonderful.

 

[roscoe]

By disengaging the controls an pushing the throttle full forward, you are treating a flooded engine, clearing it of excess fuel.

So, assuming you have a flooded engine condition, consider buying a fuel pump rebuild kit and installing it, as a worn or torn fuel diaphragm will flood the crankcase.

There are other causes of your problem, but none that will be fixed by opening the throttle and cranking it as you described.

 

[Frank Acampora]

The question is: How are you trying to start it hot? Are you pushing in the key to choke it?---wrong! So, give us a little description of what you are doing.

Now, remember: These engines don't have a heat break between the carb and the manifold. Some of them can get hot enough to boil off gasoline requiring you to re-prime the engine with the primer bulb before restarting.

 

[jholma]

Thanks. I'll check it, again. But I just put in a new diaphragm. It was pouring gas into the crankcase. What about a sticking float? Or is there anything else in the carb I can check? The reason I mentioned the coils, was that I had a motorcycle with a bad coil. It acted like that. It would start great, when cold. And it would test good on my meter. But take it down the road, and try to restart it, and it wouldn't.

 

[Frank Acampora]

Check the plugs If it has surface gap plugs, fouled plugs can cause hard starting. In fact, it is so common that I carry an extra set of plugs. If I see a force owner having trouble starting I let them change the plugs and Presto! their problem is gone. I simply take their plugs home and clean them for re-use next time.

 

[jholma]

I'll recheck the plugs. I do know their not surface gap. I was wondering a fuel line cutoff would allow enough flow? I figured I could just turn off the gas, when I want to shut down the engine. I would let it run out of gas.