devino246
Official DIYGK Chem Nerd
Doubt it. its not like a muffler starts turning red hot when it gets old. Somethings definately wrong.
10Hp tecumseh Cherry Red MUFFLER!
- Thread starter solomon
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Doubt it. its not like a muffler starts turning red hot when it gets old. Somethings definately wrong.
Linksep
New member
Ok, you said doing a valve job more than doubled the compression... This makes me think the exhaust valve was burned before and this isn't a new problem. You also just said the plug looks very lean...
When you rebuilt the carb did you replace the float needle and seat? Did you make sure to properly adjust the float height?
Did you inspect the jet? Maybe it has a burr in it partially clogging it. I might replace the jet just for kicks, or find out how much a new carb assembly is. You might have a casting or machining defect somewhere in your carb that's restricting fuel flow.
I see you're in CA... Is there any place you can buy non-oxygenated gas there? Ethanol dilutes gas and makes you run lean. If you can find some non-oxy try that. If the muffler is no longer glowing with non-oxy you know it's a carburetor/jetting issue.
When you rebuilt the carb did you replace the float needle and seat? Did you make sure to properly adjust the float height?
Did you inspect the jet? Maybe it has a burr in it partially clogging it. I might replace the jet just for kicks, or find out how much a new carb assembly is. You might have a casting or machining defect somewhere in your carb that's restricting fuel flow.
I see you're in CA... Is there any place you can buy non-oxygenated gas there? Ethanol dilutes gas and makes you run lean. If you can find some non-oxy try that. If the muffler is no longer glowing with non-oxy you know it's a carburetor/jetting issue.
yea, i rebuilt the whole thing, and even let it soak for 2 days in the heavy duty carb cleaning solvent in a can similar to a paint can. One thing i should mention is this engine had a huge exhaust on it when i got it, and now i think i know why. It has several pipe fittings to make it all work. this motor must just be garbage. I don't understand because this motor is the same engine as the other i pulled the exhaust from. I couldn't install the motor on the generator with the huge exhaust. What do you guys think? Junk?
Kaptain Krunch
Pro Junk Collector
you just need to re-jet. Its runnin lean thats all.
But for the record i do think its junk because its a tecumseh.
But for the record i do think its junk because its a tecumseh.
least it aint a clone.
Linksep
New member
The one in the middle. Did you shove a stiff wire down the jet to clear it of debris or burs? Alternatively you can spray carb-cleaner backwards through the jet (in the center hole, out the side holes) to make sure it's clear. Wear goggles though, the carb cleaner will spray in every direction. The two (large) side holes pick up fuel from the bowl and the (small) center hole meters the fuel into the intake air flow.
And where's those pics you promised us?
And where's those pics you promised us?
Kaptain Krunch
Pro Junk Collector
Have you checked to make sure none of the cooling fins are clogged up? Other than that take the carb apart and make sure the jets arent clogged, could it possibly be the wrong carb for the engine?
Kenny_McCormic
Kartless....
I guarantee its not the factory carb if it has breaker points and an emissions carb.
Linksep
New member
What's the model # and serial #? They should both be stamped on the blower housing and read something like HH70 or HM100 (Model #) and something like 8105c for the serial #... If they're not stamped on the blower housing look for an ID tag bolted to the head or a sticker somewhere with similar info. I'll try to post up a pic of the carb so you can verify it's the right one.
anderkart
Moderator
anderkart
Moderator
Awhile back, someone here posted they'd ran into problems after accidentally installing their Tecumseh float bowl clocked in the wrong position... Seems like it was a bit smaller Tec. model than yours but it might be worth double checking.
Linksep
New member
Possibly. If the float can't drop all the way down there might not be the proper amount of fuel in the bowl, which can lead to improper (lean) mixture.
Tecumseh Technician's Handbook said:
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