I know I've seen a post similar to this one, but not sure if it was the exact same issue. Anyways, my 1997 katana runs great on prime, but when its turned to "on" it shuts off almost immediately. Help please!! Could it be a bad fuel cock??? It was leaking at first, but replaced the oring and now it stop leaking. Any suggestions will be appreciated about the running on prime part. Thanks in advance.
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Make sure you have good vacuum at the center nipple in the back of the petcock. Should go to the outside port on the #4 carb. Other two lines are fuel lines that go the the "T's" on the underside of the cabs between #1 ,#2 and #3, #4. If the line is there with vacuum and you are still not getting gas, sounds like time to rebuild the petcock.Originally posted by arsenic93 octane fuel and K&N pod filters rock.
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i use a 5cc syringe and short piece of tubing to simulate the vacuum from #4 carb. you shouldnt have to pull very hard at all to open the petcock. given your syringe and hose are good it will be quite evident if the petcock diaphram is good and holding vacuum.99% of the questions asked here can be answered by a 2 minute search in the service manual. Get a service manual, USE IT.
1990 Suzuki GSX750F Katana
'53 Ford F250 pickumuptruck
Lookin for a new Enduro project
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put gas lines from the petcock down to a catch (glass, cup, something to catch gas if it comes out)
Put a clean line on the petcock... apply suction.
If gas goes into the catch with suction, and stops without... your petcock is working correctly.
Krey93 750 Kat
Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736
"I've done this a thousand times before. What could possibly go wron.... Ooops!"
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Don't buy one, rebuild it...
cp sells the kits for cheap.
There is a full pictorial of how to do it posted in the how too section.
Krey93 750 Kat
Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736
"I've done this a thousand times before. What could possibly go wron.... Ooops!"
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Originally posted by georgedaman View PostGot my problem sorted...vacume line was off the nipple.
Krey93 750 Kat
Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736
"I've done this a thousand times before. What could possibly go wron.... Ooops!"
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