87 King Quad Need Carb Adjustment Help!!!!

This is a discussion on 87 King Quad Need Carb Adjustment Help!!!! within the Repair and Maintenance forums, part of the Suzuki ATV Technical Discussions category; I have the carb and most of the quad back together. I had it running but the idle was off a bit and it hesitates ...

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Old 01-14-2011, 10:59 AM   #1
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87 King Quad Need Carb Adjustment Help!!!!

I have the carb and most of the quad back together. I had it running but the idle was off a bit and it hesitates when I throttle up. I started to adjust the needle and I tried a bit in and out, but it wouldnt run much better. I tried putting it back to the original setting, about 5 turns out from all the way in, which is where it was when I got it. BTW it was sitting in a barn for years so I dont knwo if thats the correct setting. Help Please !!!!!

Last edited by Billyray; 02-16-2011 at 06:03 PM.
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Old 01-14-2011, 11:35 AM   #2
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Did you clean the carb? Really real good? It probably has a cloged jet and the choke does it work, It won't run right with it missing (i hear of it happing). Once you turn the screw out so much it won't let any more gas through regardless of how much it's out. And I hope you changed the plug but it's probably just in the carb but I could need vavles adjusting

and stock screw setting around 2 3/4 I think but It varys some between machines

and how does it idle like too fast or what
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Old 01-14-2011, 11:40 AM   #3
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Take the carb to a machine shop and they can soak it in cleaner or boil it in some powerful stuff. Oh I forgot you can buy carb cleaner personly I havnt used any before but it's supose to be pretty good.

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Old 01-14-2011, 11:44 AM   #4
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Yeah 5 turns is way too much and the previous owner probably didn't know much about the machine, it probably has some varnish built up in the jets and passages. I would get a gallon of carb cleaner and let it soak, after you take everything apart especially the plastic pieces, at least 24 hours then take an old toothbrush and clean everything really good and then use some compressed air to blow all of the jest out and the body of the carb to get anything that isn't supposed to be there out. After you do that put it back together and see how it does and post back. Lovewheelen was correct that about 2 3/4 turn is factory setting, but start at 2 and adjust as needed to get it smoothed out and accelerating like it is supposed to.



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Old 01-14-2011, 12:42 PM   #5
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Ok so everyone knows this was a complete carb rebuild cleaned and all new parts....I will try adjusting to 2 3/4 out and see if that works. Ive been playing with it and I can get it to run but not idle at all. It will run for about 10-20 seconds and then just quits. also it has a new plug in it.
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Old 01-14-2011, 12:46 PM   #6
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Have you tried adjusting the valves? Also when you crank it does it start really easy or do you have to crank on it a bit for it to fire up.



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Old 01-14-2011, 01:07 PM   #7
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Its takes a bit to start up....Whats the proper proceedure for adjusting the valves? Also I wonder if the fuel pump could be bad?
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Old 01-14-2011, 02:17 PM   #8
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Does it have a vaccum petcock.
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Old 01-16-2011, 11:34 AM   #9
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Thomas this is starting to sound like the one I was working on? Zuki good idea too those petcocks can cause lots of problems. Remember when I started I thought it was the carb? Then the intake boot and it ended up being neither.
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Old 01-16-2011, 12:46 PM   #10
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Yeah your right Rhino. Billy how many miles does the quad have? Reason I ask this is because the Kq's have an issue with the INT valve wearing and actually getting pulled into the head/seat area Rhino can verify that I am right about this and plus I can show you pics of how it does. Anyway I will try to let you know how to adjust the valves in a little while busy right now with family stuff but I will post back as soon as I can.



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