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  #41  
Old 02-25-2010, 12:51 PM
solomon solomon is offline
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Ok i will switch it in a little bit and if it doesn't help (i don't think it will), i will start to port out the jet, assuming no gunk got in their (Again), like you guys said it may be a clogged main jet even though i deep cleaned it. Will update soon.
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Old 02-26-2010, 07:07 PM
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Well I talked to the guy i got the enignes from and he said he has about a hundred Tecumseh carbs, and that i must have the wrong one. he said on saturday we will find another one.
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Old 03-09-2010, 03:37 AM
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well i never got around to getting another carburetor, i talked to the guy i got this crap motor from and he said the carb is running to rich and opening the jet will worsen it, i thought you guys said it was lean?
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Old 03-09-2010, 04:32 AM
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Quote:
he said the carb is running to rich
Makes perfect sense...behaving like a Coleman lamp.
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  #45  
Old 03-09-2010, 03:59 PM
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well if its rich what do i do?
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Old 03-09-2010, 04:35 PM
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did u do a plug chop to make sure its rich? dont assume its rich or lean.
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Old 03-09-2010, 04:37 PM
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Quote:
well if its rich what do i do?
Quote:
my tecumseh 10hp runs excellent, but its muffler turns cherry red.
Based on this statement, I would ignore it.
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Old 03-09-2010, 04:41 PM
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you cant really ignore it, it turns cherry red and then starts to backfire, that's not safe for a generator, and people would be like WTF when i go to sell it
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Old 03-09-2010, 04:49 PM
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Quote:
Originally Posted by solomon View Post
you cant really ignore it, it turns cherry red and then starts to backfire, that's not safe for a generator, and people would be like WTF when i go to sell it
Do a plug chop THEN figure out where to go from there. Might need to adjust carb, might just need to clean the airfilter, might have to drill out or get a smaller jet.
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Old 03-09-2010, 05:30 PM
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Does this engine have a choke?
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  #51  
Old 03-09-2010, 06:20 PM
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Yea, it has a choke. thier is a screw on the side, if you look at the pis, thier wa a white cap on it, but if i try to turn the screw, it becomes so loose when i start the engine it just vibrates out. What is the screw?
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Old 03-09-2010, 06:32 PM
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if it is backfiring its not burning all of the fuel and air... check timing
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Old 03-09-2010, 07:14 PM
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anyone know what the points and coil gap should be set at?
  #54  
Old 03-09-2010, 07:35 PM
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looks like the points are .020 and the coil should be .010
  #55  
Old 03-09-2010, 10:32 PM
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well after looking at your pix, that screw that likes to vibrate out probably is the mix screw. all carbs have some form of adjustment (sometimes) i would try backing that one out and adding a drop or two of threadlocker for good measure. other than that i dont know what to tell ya
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  #56  
Old 03-09-2010, 10:49 PM
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should i try to put a little spring on it? its just so wierd because it was hiddin by a white cap
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Old 03-10-2010, 10:32 AM
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That little screw is just for the idle mixture, not the high-speed mixture.

You have a Series 3 or Series 4 carb. According to the manual they are used on 8-12.5HP engines; problem with that is you are claiming to have a fixed jet. The manual doesn't say that the series 3/4 carbs have fixed jets; it does however note that Emissionized series 1 carbs (2-7HP) may have a fixed jet. Soooooo it looks to me (based on the manual) like you have a fixed jet from a much smaller engine and you're running way lean as we have all been stating since page 1. Go back to the guy and get the right (adjustable jet) or get out the drill and start hacking.

Kenny was right on page 1 and page 2. You have some Frankencarb that is not as the factory intended.
Attached Thumbnails
Tecumseh Carb.jpg   Tecumseh Carbs.jpg  

  #58  
Old 03-10-2010, 12:18 PM
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Ok well the guy said he has has a carb he pulled off a 10hp vertical tecumshe, he said it is adjustable, should i try that one? Or do you think i could just swap the jet? Id, prefer to keep the carb i have and install a bigger jet only becuase the carb that is on it looks very nice and I KNOW IS PERFECTLY REBUILT!
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Old 03-10-2010, 12:49 PM
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Take your carb off, take the jet out, bring everything over to Guy's house, compare. You may simply be able to switch your fixed-jet for the adjustable jet out of the other carb. That's assuming the fixed jet didn't damage the carb body or emulsion tube.

If there's any damage to your carb or you can't figure out how to switch his adjustable jet into your carb take the other carb. There's all of about 8 parts in these carbs and 99% of the time they don't need "rebuilding" anyway...a simple clean & adjust will make almost any small engine carb perform like new.
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Old 03-10-2010, 01:41 PM
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okay will do, thanks
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