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Petcock Problemo!!
- rsrcafe
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- Motor Head
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- FIX UP YOUR BIKE RIGHT AND CHEAP
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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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- MFolks
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I think www.z1enterprises.com sells new diaphrams.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- rsrcafe
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- loudhvx
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Thanks for the info guys. I ordered a new diaphram and and gave the vacume line elbow a fresh hit of thread sealer for good measure. We'll see what happens.
If the inline filter was a paper one, that can be a problem. They tend to seal up after just a little while. Sometimes playing with the petcock will make it flow a little while.
Have you checked the petcock flow by itself? Hook up a small hose to the vacuum port and you should be able to open it by sucking on it. Or you can use a small disposable syringe to pull the vacuum. Then you can check the flow.
Here's a video I made showing how inline filters seal up, but can be blown through with a little pressure. The one had wouldn't even flow on prime (that's where it starts on the video).
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- 1shot
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:laugh:
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- loudhvx
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But it was only a temporary resuscitation. I pulled the plug later that day.
Now I use metal-screen filters like this.
www.denniskirk.com/jsp/product_catalog/P...04&leafCatId=&mmyId=
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- rsrcafe
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I also drained the tank a second time and tried to check the petcock flow above the filter on the vacume line. I used a syringe and on prime I can open the syringe ( no surprise). On the On position I pull it open, and the syringe gets sucked back to the closed position. Is this normal? I have a service manual and it spends about 1 paragraph talking about the fuel valve and has no diagnostic info whatsoever. HELP!!
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- Motor Head
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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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- loudhvx
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Okay, I tried a new diaphram and still no luck bike still shuts down under load unless on prime. I did see when I took the old one out that there was a black "seal" that sat on top of the diaphram over th 4mm o-ring side. I don't see it on the kawasaki parts break down. It looks like a top hat ( real technical I know) and althought there doesn't seem to be any holes in the seal it looks real worn. could this be the culprit? If so any OEM number?
I also drained the tank a second time and tried to check the petcock flow above the filter on the vacume line. I used a syringe and on prime I can open the syringe ( no surprise). On the On position I pull it open, and the syringe gets sucked back to the closed position. Is this normal? I have a service manual and it spends about 1 paragraph talking about the fuel valve and has no diagnostic info whatsoever. HELP!!
You are putting the syringe on the vacuum connection, correct? The vacuum port is the smaller pipe.
There should never be air flow through the vacuum connection on the petcock. The syringe should always get pulled back in regardless of the petcock position. If it doesn't, then there is a leak.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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