Suzuki GSX-R Motorcycle Forums Gixxer.com banner

1 - 4 of 4 Posts

·
Premium Member
Joined
·
4 Posts
Discussion Starter #1
My 93 750W will only run on prime. The petcock is new and the vacumn line is not clogged. Any ideas?
 

·
IM THE BRONZE
Joined
·
1,336 Posts
My 93 750W will only run on prime. The petcock is new and the vacumn line is not clogged. Any ideas?
Put a piece of fuel line on your petcock, disconnect vacuum line and draw a vacuum on the vacuum line with your mouth.
See if it flows in the "ON" position.
If it doesnt, you have a petcock stuck diaphragm issue. If thats the case, you'll have to pull the cover off the back of the petcock and free up the oring on the diaphragm plunger.
 

·
Premium Member
Joined
·
4 Posts
Discussion Starter #4
Thank you for the suggestion. That helped me pinpoint the problem. The diaphragm was taken apart - reassembled and put back on the tank. It now runs great in the 'On' position.
 
1 - 4 of 4 Posts
Top