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Author Topic: 1981 Kawasaki GPz550 Cafe Build  (Read 26497 times)

Online Maritime

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #150 on: Jul 12, 2018, 18:27:53 »
Yep. Vacuum petcock issue. Its the line to the vac, or the diaphram or sonething else. They are shit to sort. I chucked mine for a standard one and just shut my fuel off after riding.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline canyoncarver

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #151 on: Jul 13, 2018, 12:45:32 »
Vaccuum petcocks are fine when new but when they die, I prefer to replace it with a manual petcock every time.
--

YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
KZ400 The Rabbit
65 Norton, My damn Shovelhead chop, and an 86' FXR
more YZF750R's, the KZ's, a Zephyr750...and the unfinished 75' CB550 cafe.
--

Offline JustinLonghorn

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #152 on: Jul 13, 2018, 13:16:15 »
Pingel, make it so.
I'm going to eat your brains and gain your knowledge.

Into The Sunset, CB750 build

TT500 the Animal

Offline Sam_I_Am

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #153 on: Jul 13, 2018, 15:16:27 »
Should I just leave it then and use prime like it's a manual policy? Probably not as it idles high hu?
1981 GPz550 Cafe Build

Online Maritime

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #154 on: Jul 13, 2018, 15:26:28 »
I'd swap it out for a standard on/off/reserve pingel or other brand. The vacuum were designed to shut off fuel if the bike stalls in a crash if the motor stops, they cause a lot of issues when they get old and sometimes, even all refreshed the bike will run funny, like the high idle etc. just remember to turn off your fuel like folks have done for 40 years before they invented them. The prime is designed to flood the bowels after the bike has sat to get it started then the vacuum takes over so running on prime puts fuel in way to fast and can over run the floats and would be like running choked and cause the fast/high idle.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Online Maritime

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« Last Edit: Jul 13, 2018, 15:35:47 by Maritime »
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline irk miller

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #156 on: Jul 13, 2018, 16:03:47 »
Do what the Cap'n says.  Get a Pingel.  They are beauties.

Offline doctorcat

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Re: 1981 Kawasaki GPz550 Cafe Build
« Reply #157 on: Jul 19, 2018, 15:04:49 »
I went manual on mine and don't regret it. simplicity is good and it works much better than the vacuum unit. There's cheap stock replacements or the pretty pingel ones. I used a cheap stock replacement style and it works fine and the bike runs.