zxr750J1 Idle Issue

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AshClouded
Posts: 2
Joined: Thu Jan 09, 2020 9:49 am
My Bike: ZXR750J1

zxr750J1 Idle Issue

Post by AshClouded » Thu Jan 09, 2020 9:58 am

Good Morning,

I've got a ZXR750J1 1991 bike that I've been trying to get running. I've pulled apart and cleaned the carbs but there is a missing pilot idle mixture screw in one of the carbs. Would this be the reason I can't get the bike to idle at all? I can get the bike wanting to run with a squirt of fuel. And does anyone know where I can buy replacements for this specific screw as I can't seem to find it.

https://ibb.co/VjWCnsx
https://ibb.co/YB0cZ1f
https://ibb.co/d5185fZ

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banner001
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Joined: Sat Sep 24, 2011 3:27 pm
My Bike: ZXR400 L4
Location: Nuneaton

Re: zxr750J1 Idle Issue

Post by banner001 » Thu Jan 09, 2020 6:14 pm

Yes it won't run without that part... Have you tried a Kawasaki dealer?

https://www.kawasakioriginalparts.com/r ... country=GB
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003

AshClouded
Posts: 2
Joined: Thu Jan 09, 2020 9:49 am
My Bike: ZXR750J1

Re: zxr750J1 Idle Issue

Post by AshClouded » Sun Jan 12, 2020 1:25 am

Thanks for the reply. I couldn’t find a direct replacement but I used the same part off a zx11r (which I believe has the 40mm Keihin) and still not idling so I guess it’s something else :(

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banner001
Track day God
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Posts: 2443
Joined: Sat Sep 24, 2011 3:27 pm
My Bike: ZXR400 L4
Location: Nuneaton

Re: zxr750J1 Idle Issue

Post by banner001 » Sun Jan 12, 2020 3:49 pm

Could be blocked idle jets, have you pulled them to look through them?
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said :smt003

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