H still needs a tiny bit of choke or dies @ top RPM...

Posted by Crazy Red Power in SE-WI on July 11, 2012 at 16:28:10 from (68.114.237.14):

It all started with figuring out what happened low idle on the new H. No amount of adjustment with the idle stop screw or idle jet made any difference. The governor control rod equalizer & springs were over-tightened & that bent the heck out of the equalizer bracket. I got it as straight as I could & no difference. Opened the carb to make sure I didn't forget anything... & I did!! Shame on me for not noticing the idle jet was missing. Darned thing was snapped clean off. I extracted the remnants & decided at that point to also change out the main jet & needle seat. Blew it out, put it all back together & now it dies like you push the outrun button in to kill the mag when you are at 3/4 throttle or better. Idles ok, though. Sooooo... this is what I've done so far: The carb has a new rebuild kit in it from CaseIH (354452R92), gave it the new jets & a fuel adjusting screw seat. Made sure everything was for the gasser carb. Float is set at 1 27/32" from the gasket surface on the top half (of carb) to the top of the float. My first question arrises here. Is that measurement taken with or without the gasket? I measured without.

Next thing to go was the old fuel strainer. The "nut" that's formed on top of the strainer was stripped round. It also had a roll pin jammed in the intake hole(?). The gas tank has been suction vacuumed twice & removed & swished once. Not a whole lot of dirt in there to begin with. The fuel line is clean, BUT it's a rubber line that dips down 3" or 4" into a "U" shape right before the carb. Could that cause the problem?

The manifold is new & has fresh gaskets. Last two things I can think to replace are the head gasket & head. Am I still forgetting to check something? Every last adjustment on the carb has been putzed with. No difference. It runs best with the main jet screw is at 5 1/2 turns & the idle screw is at almost a complete turn. Everything else seems to be ok.

Any ideas before I make this Earl Scheib job a lawn ornament or send it packing to a furnace in China?

Mike

Replies:

• Re: H still needs a tiny bit of choke or dies @ top RPM... rustyfarmall 11:48:21 07/15/12 (0)
• Re: H still needs a tiny bit of choke or dies @ top RPM... JT 11:17:33 07/15/12 (0)
• Re: H still needs a tiny bit of choke or dies @ top RPM... El Toro 06:52:02 07/12/12 (0)
• Re: H still needs a tiny bit of choke or dies @ top RPM... rustred 17:24:22 07/11/12 (1)
  • Re: H still needs a tiny bit of choke or dies @ top RPM... Crazy Red Power in SE-WI 17:49:06 07/11/12 (0)
• Re: H still needs a tiny bit of choke or dies @ top RPM... Dean Olson 17:01:52 07/11/12 (2)
  • Re: H still needs a tiny bit of choke or dies @ top RPM... Crazy Red Power in SE-WI 17:54:18 07/11/12 (1)
    • Re: H still needs a tiny bit of choke or dies @ top RPM... mkirsch 13:22:46 07/12/12 (0)

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