Looking for input on approx jet sizes for a 2332. Has 44 Empi's on it (Webers) Currently has a 55 idle, F11 tube, 135 somethin or another and 200 main I think. It is running rich to the point it is fouling the plugs out after 10 hrs or so of runtime. Motor pulls 4 lbs on flow gauge on all put one cylinder, something wrong in the carburator and that cylinder pulls 7-8 at idle. The plug on that cylinder is the only one looks like its burning good, the other three come out black. Thoughts?

the 135 should be the main and the 200 the air corrector

that is what my 2332 is jetted with the exception of my air jet is either a 175 or 185 but most of your driving is on the idle and main jets the air jets dont really kick in till above 4500rpm's

i would check the air bypass screws (the ones with the 8mm jam nut down beside the mixture screws), they are used to "balance" out the different barrels, i usually just run mine bottomed out or maybe 1/2 round out and they are usually pretty close that way,,, however if 3 of them are about the same and 1 is 3 - 4 #'s higher then i would check the bypass screws first and they all within 1/2 to 1 round of each other then i would suspect that a butterfly is out of "center" or a bent throttle shaft

if all else fails check your valve clearance and do a compression test on each cylinder

my 2 cents

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Just Stand On It!!!!

Chris

Older HPMX's had major issues one of them being throttle shafts fitting loose.
What is your vent sizes?

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Gary

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"If you don't run into the Devil every once in awhile, you must be going in the same direction!"

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All the air bypass screws are bottomed out. Was kinda thinking that the butterfly is off center. Valve clearance has just been readjusted, and motor was just rebuilt 2 weeks ago, so compression should be good.

Vent sizes?

he's talking about the venturi size

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Smith

They are what came with the carbs, believe they are 36mm

You can look down in the throat to see the sizes.
Rule of thumb on main jets is 4.1-4.2 x's venturi size.

_________________
Gary

Turbo VW Sand Racer
Polaris Ranger



"If you don't run into the Devil every once in awhile, you must be going in the same direction!"

Davis Motorsports FaceBook Page