20yr old Techumseh runs then quits

[callbay]

10HP on a generator. Runs for about 30 seconds then quits. Wait a couple of minutes and it will start and then do the same thing again.

I took the carb bowl off and the float seems to be working ok.

Any Ideas?

Thanks a ton!

 

[CT8]

Is there spark?

 

[SumpChump]

It's not getting fuel. something in the line may be letting a trickle through enough to fill the bowl for a time frame which then is used up at a pace too fast for the restricted flow. I'd pull the fuel line and see how the flow is. Also check/take off the fuel tank and get the crud out of there. It could be very small particles blocking a jetting area also.

 

[doitmyself]

Fuel filter plugged?

Fuel line plugged? Follow SumpChump's advice.

Fuel tank cap not venting? Try starting it without cap.

 

[OneEyeJack]

Choke setting?

 

[lexus114]

it doesnt have a low oil shut off on it does it?

 

[callbay]

Yes, it has spark and it does have a low oil warning system.

 

[Kawiguy454]

Not getting fuel- Partially clogged filter or even gas tank vent is clogged. If its been sitting long time could be a cruddy carb too.

 

[Merkava_4]

First you gotta determine whether it's losing spark or losing fuel. Most of the time it's a fuel deliver problem because carburetors get clogged up real easy. Ignition systems don't get clogged up; they either work or they don't work. Is the ignition system breaker points or electronic magneto; do you know ?

 

[Bgallagher]

Originally Posted By: Kawiguy454
Not getting fuel- Partially clogged filter or even gas tank vent is clogged. If its been sitting long time could be a cruddy carb too.


+1 this is what I was thinking. I would replace the filter and consider taking the carb out and giving it a good soak/cleaning.

 

[callbay]

Got it! It was a little piece of hair thickness wire that holds the needle valve to the tang on the float.

I had it in the wrong spot. It was not on the tang. As soon as I put it on the tang it kept running. Maybe it kept the needle valve from opening much.

Thanks BITOG guys!

 

[andyd]

Have you cleaned the holes in the main jet yet? You clean the varnish out of the hole in the side of jet Down a little bit below the top. This is all that stuff on the bowl nut. Please post a follow up.

 

[Merkava_4]

Originally Posted By: andyd
Please post a follow up.


He actually did, but you didn't read through the posts before posting.