dirty float bowls

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07 Oct 2011 21:57 #481935 by STUNTMAN STEVE
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I got them loose today and drained the bowls, sprayed out what I could get to. Filled it back up, put some seafoam in the tank, put a new filter on it.
Took it for a few short runs by my house and it got better, but still erratic idle... sometimes after a minute of idle it would hang up around 4-5k, and then sometimes idle down and die... im gonna pull the carbs Sunday and go through them. My brothers gotta pancake compressor I can use... oh well, ill see how much trouble I can get into lol

'84 gpz750 work in progress/ money pit

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07 Oct 2011 22:08 #481936 by 650ed
Replied by 650ed on topic dirty float bowls
Here's the ticket for removing carb bowls without taking carbs off the bike. It works great for me.

Attachment carbscrewdriver.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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07 Oct 2011 22:25 #481940 by STUNTMAN STEVE
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I really do appreciate the tips guys, I've already learned alot about setting the floats via the clear tube method and a bench synch... I think the guys that went through my heads just didn't do anything with the carbs.... :( hard to find a good local guy

'84 gpz750 work in progress/ money pit

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07 Oct 2011 22:27 #481941 by STUNTMAN STEVE
Replied by STUNTMAN STEVE on topic dirty float bowls
I had the bowl screw replaced with new ones a while back, so they're pretty easy right now

'84 gpz750 work in progress/ money pit

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08 Oct 2011 03:45 #481977 by bountyhunter
Replied by bountyhunter on topic dirty float bowls

STUNTMAN STEVE wrote: but still erratic idle... sometimes after a minute of idle it would hang up around 4-5k, and then sometimes idle down and die...

From what I remember, that is the classic symptom of a vacuum leak.

1979 KZ-750 Twin

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08 Oct 2011 03:49 - 08 Oct 2011 03:49 #481978 by bountyhunter
Replied by bountyhunter on topic dirty float bowls

650ed wrote: Here's the ticket for removing carb bowls without taking carbs off the bike. It works great for me.

Attachment carbscrewdriver.jpg not found

I've got those too, but my secret weapon for bowl screws is this frankenstein thing I made from a phillips bit stuck in a 1/4" drive socket with a 1/4"-3/8" adapter stuck in the back of the socket all wrapped in tape for finger traction.

1979 KZ-750 Twin
Last edit: 08 Oct 2011 03:49 by bountyhunter.

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08 Oct 2011 19:00 #482063 by STUNTMAN STEVE
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Damn, ill check them again tommorrow. I sprayed carb cleaner around the boots and manifolds and didn't notice any change in rpms. Then again its hard to keep it running and spray the carbs... maybe I should spray the tops or th bottoms of the carb bodies?

'84 gpz750 work in progress/ money pit

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08 Oct 2011 19:23 #482069 by Motor Head
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I remember you saying that before, couldn't find a leak. I think Pull the carbs, remove the manifolds. Clean the carbs, then Bench set them up right. Check those manifolds for cracks, separation, or just poor sealing. Get it all back together then retry your adjustments.
Didn't you also verify the throttle cable is not hanging up, and also the Ignition advancer is performing correctly?

1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...

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08 Oct 2011 22:27 #482093 by STUNTMAN STEVE
Replied by STUNTMAN STEVE on topic dirty float bowls
I haven't checked the cable since I brought it home, but will tommorrow. Ill look in the manual about the ign advance. Thanks man

'84 gpz750 work in progress/ money pit

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