1993 k5 won’t idle

Mechanical problems discussed for Dirt Bikes and Dual Sport Bikes
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44special
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Joined: Fri Aug 11, 2017 3:28 pm

1993 k5 won’t idle

Post by 44special » Sat Aug 15, 2020 4:13 pm

Ok, at my wits end :evil: trying to get this bike to idle. Engine has 165lbs compression, rad valve with good reeds and new carb boot. Carb is a 38mm airstriker #7 slide n82m needle 158 main as I’m at 5400’. The jet block o ring has been replaced and I even bought the factory fuel level gauge! ( fuel level was 6mm too high by the way) I’ve tried everything from 58 to 30 pilot jets and nothing affects how the air screw and idle screw have no affect on making the bike idle. It’s almost like there is no idle circuit. I have completely cleaned the carb to include using guitar strings to ensure all passages are open. What am I missing?

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Sandblaster
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Location: Eugene, OR
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Re: 1993 k5 won’t idle

Post by Sandblaster » Sun Aug 16, 2020 3:43 am

Seems like you covered just about everything.
If you want, send me the body and jet block with no other parts.
Remove the jet block, keep the gasket there.
Let me clean and inspect it for you.

Or, buy a quad vent air Striker from ebay for about 30 bucks and give it try.
If bikes are for kids I'll never grow up.

44special
Posts: 7
Joined: Fri Aug 11, 2017 3:28 pm

Re: 1993 k5 won’t idle

Post by 44special » Sun Aug 16, 2020 1:50 pm

Thanks for the reply sandblaster, I think I’ll try ordering one of those carbs and if it works, I’ll contact you to check out my genuine keihin for me!
Or I’ll get that lectron I’ve been eyeing ....😆

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Sandblaster
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Re: 1993 k5 won’t idle

Post by Sandblaster » Sun Aug 16, 2020 3:47 pm

Ok, sounds good.
I would not plan on running that 30 dollar carb for long but it is a cheap test.
If bikes are for kids I'll never grow up.

44special
Posts: 7
Joined: Fri Aug 11, 2017 3:28 pm

Re: 1993 k5 won’t idle

Post by 44special » Thu Sep 03, 2020 8:48 pm

Ok, installed my new no name airstriker today after cleaning it and installing genuine keihin jets and using my slide and needle. Idles now, but ONLY with the choke on. I have the biggest pilot jet I have in it(58) and idle speed screw in all the way in. Air screw still has no effect. So now what could be the issue? Could the timing of the engine affect this?

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Sandblaster
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Re: 1993 k5 won’t idle

Post by Sandblaster » Fri Sep 04, 2020 12:56 am

Where is your pilot screw at?
If bikes are for kids I'll never grow up.

44special
Posts: 7
Joined: Fri Aug 11, 2017 3:28 pm

Re: 1993 k5 won’t idle

Post by 44special » Fri Sep 04, 2020 12:59 am

Started at 2.5 out and went in. Doesn’t seem to affect anything, engine just slows down and dies.

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