Troy Bilt Horse.....Stumped

[smokeless]

Engine has me bewildered. New points, new muffler, new oem carb. I let it warm up, runs pretty good lower rpms, but typically as soon as i give it more gas, it skips as if starving for fuel. Misses so severly i have to back of to lower throttle.

Adjusted carb and double checked. Just wondering if when it starts to skip if i shot some fuel in the breather and corrects that would answer problem as fuel issue. Any ideas would be appreciated.

Oh, original tecumseh engine and not sure of age, but plenty old

Thanks

 

[bcp]

Maybe a plugged hole in the side of the main jet on the bottom. Part 40.



Bruce

 

[smokeless]

Likely a plugged hole in the side of the main jet on the bottom. Part 40.

View attachment 602785

Bruce

Well i will check if out, thanks. Did not even give the jet a thought since brand new OEM carb.

Will report back, thanks

 

[bcp]

It's a very tiny hole. A little speck can plug it.

Bruce

 

[smokeless]

You may have cracked. Intermittent issue so that would make sense. Anxious to check it in the am, thanks again

 

[MossRoad]

Also check fuel filter, and vent in fuel cap if equipped. Simple test would be to run it till it starts running rough, then crack the fuel cap and see if there's a vacuum. Good luck. :thumbsup:

 

[smokeless]

Good tip, thanks. Will check it out in theam

 

[MossRoad]

Air filter, too.

We'll just keep adding stuff until something resolves the problem! :laughing:

 

[smokeless]

If it works, am all for it

 

[glockrocket17]

This may not be relevant but I had a snow blower with a tecumseh motor and it would miss and shoot a flame out the exhaust occasionally and was low on power. It ended up being the valves were to long and there was not any clearance between the stem and cam.

 

[smokeless]

Everything is relevant at this juncture. My issue is more intermittent, but more poor running than good. Your post is good point to keep in mind, rule nothing out, but try the obvious and simplest first, thanks

 

[CobyRupert]

Some good tips here.
"Too little fuel" symptoms (caused by fuel filter, tank venting/vacuum problems, etc..) are very similar to (& sort of the same thing as) "too much air problems".*
Check for air leaks between carb and intake.

*Sort of like "too much gas problems" can be similar to "too little air problems".

 

[smokeless]

More good points, after breakfast will take tips and work on tiller. Squirted carb cleaner around carb/intake gasket looking for surges, no soap. One thing for sure, we will be better informed, thanks

 

[smokeless]

Well its over.. Big lesson learned. I removed jet as suggested, cleaned, air out and installed. Same problem EXCEPT fuel started coming out bowl vent and that indicated to me bowl full and needle stuck open.

Removed carb, looked in needle and seat....junk abounds. This kinda puzzles me cause gas clean, tank not bad and a new carb. I immediately rulled out .carb cause if was new.

When i took the bowl off the gasket kinda puffed full and could not be reused. Took gasket from old carb, installed bowl and carb. Backed off 1.5 turns, tiller fired. Fine tuned bowl jet and tiller is advancing on throttle fine. Big lesson, never trust something cause its new.

Thanks for all the replies, we are far better informed.

Respectfully, Butch

 

[cqaigy2]

Glad you got it all figured. :thumbsup:

 

[SandburRanch]

Well its over.. Big lesson learned. I removed jet as suggested, cleaned, air out and installed. Same problem EXCEPT fuel started coming out bowl vent and that indicated to me bowl full and needle stuck open.

Removed carb, looked in needle and seat....junk abounds. This kinda puzzles me cause gas clean, tank not bad and a new carb. I immediately rulled out .carb cause if was new.

When i took the bowl off the gasket kinda puffed full and could not be reused. Took gasket from old carb, installed bowl and carb. Backed off 1.5 turns, tiller fired. Fine tuned bowl jet and tiller is advancing on throttle fine. Big lesson, never trust something cause its new.

Thanks for all the replies, we are far better informed.

Respectfully, Butch

************************************************************
Beenthere dunthat with a new Honda portable generator. Of course stale gas was blamed so no warranty. A hundred bucks later it magically runs.

 

[MossRoad]

Well its over.. Big lesson learned. I removed jet as suggested, cleaned, air out and installed. Same problem EXCEPT fuel started coming out bowl vent and that indicated to me bowl full and needle stuck open.

Removed carb, looked in needle and seat....junk abounds. This kinda puzzles me cause gas clean, tank not bad and a new carb. I immediately rulled out .carb cause if was new.

When i took the bowl off the gasket kinda puffed full and could not be reused. Took gasket from old carb, installed bowl and carb. Backed off 1.5 turns, tiller fired. Fine tuned bowl jet and tiller is advancing on throttle fine. Big lesson, never trust something cause its new.

Thanks for all the replies, we are far better informed.

Respectfully, Butch

Is there a fuel filter before the carb? If not, install one. Prevents a lot of grit from getting to the carb from the tank.

I've also found that many times when I remove a carb, mess with the fuel lines, change a fuel filter, etc... it'll knock gunk loose that then gets to the needle and float.

Glad you found your problem. :thumbsup:

 

[smokeless]

Appears to be oem filter in gas tank. I will recheck and put one in line if it looks shabby. Defintely running much better. thanks

 

[arto98607]

Yes it's well worth installing one of these generic fuel filters, as well as one of these fuel shutoff valves so you can run the carburetor empty before storage.

:drink:

 

[Birdhunter1]

I've seen rubber fuel lines get soft and sucked flat enough to be a restriction on full fuel flow.