RainMaker
Member
Posts: 6626
VRCC#24130 - VRCCDS#0117 - IBA#48473
Arlington, TX
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« on: January 07, 2012, 06:58:43 PM » |
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Took off the tank and could not pull a vacuum - just gas - out of the vacuum tube. Figured a bad diaphragm. So rebuilt the petcock with a K&L kit with new spring, diaphragms. Tied it back together in the correct format (spring, disc, big diaphragm, metal connector, fuel diaphragm) and vacuum holds great. Put gas in the tank, put a clear tube on the gas outflow and no gas flowing at off. Turned to on and no gas. Pulled a vacuum and - no gas. Switched to reserve and no gas with vacuum. It's like the fuel diaphragm is not opening. Tank has about 2 gallons in it. Screen is clean.
Ideas?
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 2005 BMW R1200 GS 2000 Valkyrie Interstate 1998 Valkyrie Tourer 1981 GL1100I GoldWing 1972 CB500K1 |
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MP
Member
Posts: 5532
1997 Std Valkyrie and 2001 red/blk I/S w/sidecar
North Dakota
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« Reply #1 on: January 07, 2012, 07:05:59 PM » |
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you can pull a vac on the line, and then blow into the inlet into the petcock to see if it is opening up.
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 "Ridin' with Cycho" |
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RainMaker
Member
Posts: 6626
VRCC#24130 - VRCCDS#0117 - IBA#48473
Arlington, TX
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« Reply #2 on: January 07, 2012, 07:28:06 PM » |
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pulled the petcock off and looked down the outlet and the diaphragm is opening when I put vacuum on it. Put the petcock back on and on reserve, I finally got it to flow but there were bubbles in the flow. Turned it to ON and tilted the tank back - no flow. Turned it back to reserve and it doesn't flow with vacuum.
I think the petcock itself may be bad, i.e, ball sticking.
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2005 BMW R1200 GS 2000 Valkyrie Interstate 1998 Valkyrie Tourer 1981 GL1100I GoldWing 1972 CB500K1 |
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #3 on: January 07, 2012, 10:14:16 PM » |
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pulled the petcock off and looked down the outlet and the diaphragm is opening when I put vacuum on it. Put the petcock back on and on reserve, I finally got it to flow but there were bubbles in the flow. Turned it to ON and tilted the tank back - no flow. Turned it back to reserve and it doesn't flow with vacuum.
I think the petcock itself may be bad, i.e, ball sticking.
Are you getting positive feedback, i.e. is it clicking into place, when you move the selector from one position to another? If not, I agree that the ball & spring part of the mechanism might not be working. |
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing   |
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RainMaker
Member
Posts: 6626
VRCC#24130 - VRCCDS#0117 - IBA#48473
Arlington, TX
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« Reply #4 on: January 08, 2012, 05:24:50 AM » |
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pulled the petcock off and looked down the outlet and the diaphragm is opening when I put vacuum on it. Put the petcock back on and on reserve, I finally got it to flow but there were bubbles in the flow. Turned it to ON and tilted the tank back - no flow. Turned it back to reserve and it doesn't flow with vacuum.
I think the petcock itself may be bad, i.e, ball sticking.
Are you getting positive feedback, i.e. is it clicking into place, when you move the selector from one position to another? If not, I agree that the ball & spring part of the mechanism might not be working. I pulled it apart again, reset everything with a new kit and now it works. Go figure. The first kit was bad. Appears the fuel diaphragm may have been the wrong one - looks different than the second one and the original. Problem solved - now have to get the carbs clean out. This thing runs horribly. |
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2005 BMW R1200 GS 2000 Valkyrie Interstate 1998 Valkyrie Tourer 1981 GL1100I GoldWing 1972 CB500K1 |
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Westsider
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« Reply #5 on: January 08, 2012, 06:02:01 AM » |
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Did you say problems with a stock petcock, oh, ah ,er, ever mind.  |
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we'll be there when we get there - Valkless,, on lookout....
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #6 on: January 08, 2012, 06:04:29 AM » |
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pulled the petcock off and looked down the outlet and the diaphragm is opening when I put vacuum on it. Put the petcock back on and on reserve, I finally got it to flow but there were bubbles in the flow. Turned it to ON and tilted the tank back - no flow. Turned it back to reserve and it doesn't flow with vacuum.
I think the petcock itself may be bad, i.e, ball sticking.
Are you getting positive feedback, i.e. is it clicking into place, when you move the selector from one position to another? If not, I agree that the ball & spring part of the mechanism might not be working. I pulled it apart again, reset everything with a new kit and now it works. Go figure. The first kit was bad. Appears the fuel diaphragm may have been the wrong one - looks different than the second one and the original. Problem solved - now have to get the carbs clean out. This thing runs horribly. I'm curious. Was the rebuild kit an OEM cover set kit or one of the others that only has the plastic parts? |
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing |
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Disco
Member
Posts: 4901
Armed Man=Citizen; Unarmed Man=Subject
Republic of Texas
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« Reply #7 on: January 08, 2012, 06:58:25 AM » |
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rebuilt the petcock with a K&L kit with new spring, diaphragms |
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2000 Bumblebee "Tourer", 98 Yellow & Cream Tourer, 97 Rescue blower bike 22 CRF450RL, 19 BMW R1250RT 78 CB550K 71 Suzuki MT50 Trailhopper .jpg) VRCC 27,916 IBA 44,783 |
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #8 on: January 08, 2012, 10:46:09 AM » |
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rebuilt the petcock with a K&L kit with new spring, diaphragms Silly me. |
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing |
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Disco
Member
Posts: 4901
Armed Man=Citizen; Unarmed Man=Subject
Republic of Texas
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« Reply #9 on: January 08, 2012, 11:42:12 AM » |
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Sorry, Dave. I forgot to put a smiley in there. Here goes...  |
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2000 Bumblebee "Tourer", 98 Yellow & Cream Tourer, 97 Rescue blower bike 22 CRF450RL, 19 BMW R1250RT 78 CB550K 71 Suzuki MT50 Trailhopper VRCC 27,916 IBA 44,783 |
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RainMaker
Member
Posts: 6626
VRCC#24130 - VRCCDS#0117 - IBA#48473
Arlington, TX
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« Reply #10 on: January 08, 2012, 06:29:43 PM » |
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Hope you two are having a good time with this.  |
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2005 BMW R1200 GS 2000 Valkyrie Interstate 1998 Valkyrie Tourer 1981 GL1100I GoldWing 1972 CB500K1 |
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #11 on: January 08, 2012, 06:46:56 PM » |
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Hope you two are having a good time with this. Well, we were, Captain Buzzkill.  |
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing |
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Disco
Member
Posts: 4901
Armed Man=Citizen; Unarmed Man=Subject
Republic of Texas
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« Reply #12 on: January 08, 2012, 07:40:08 PM » |
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Neither one of us got to ride 429 miles today, so we've had to find fun somewhere else...  |
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2000 Bumblebee "Tourer", 98 Yellow & Cream Tourer, 97 Rescue blower bike 22 CRF450RL, 19 BMW R1250RT 78 CB550K 71 Suzuki MT50 Trailhopper VRCC 27,916 IBA 44,783 |
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HayHauler
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« Reply #13 on: January 08, 2012, 08:00:50 PM » |
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Hope you two are having a good time with this. Well, we were, Captain Buzzkill. Uh, that would be "MR. Buzzkill". Hay <---- only couple hundred miles today... Jimmyt |
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