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Old 02-03-2012, 12:42 PM   #1 (permalink)
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Another 20r with carb Problem

I have a 20r with water choke, I adjusted it and now the engine is staying on... But when at idle it jumps and stutters just a bit like very small amount... I think I set the float too high... Could that be the problem? Or maybe the fuel mix is set wrong? I want to make sure its at it's best running state before I take it to emissions...

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Old 02-09-2012, 03:19 PM   #2 (permalink)
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Yea more info needed. Do you mean the engine is 'dieseling' or continuing to run after you shut it down?

Float set too high would cause over-rich mixture which could be a contributing factor. There is also a solenoid that shunts the flow of fuel from the pump without ignition power-if it's not getting voltage that might be your issue. You need a vacuum gauge at the very least and a tach gauge (good to have) to set your mix correctly. You can do a plug chop to see where your mix is-drive under load around 4k rpm's then kill the ignition and stop and look at the inner most part of your plug's insulators-dark and oily looking=too rich. They should be a brownish color and mostly dry.

Why were you adjusting the carb-did you clean it? What have you recently done.
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Old 02-09-2012, 03:19 PM
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20r, adjust, adjustments, carb, carburetor, choke, dieseling, high, hilux, idle, issues, problem, revs, runs, shut, toyota

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