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Main Area => General GS500 Discussion => Topic started by: Adam R on October 06, 2003, 12:42:14 AM

Title: Bike back together and running, but ....
Post by: Adam R on October 06, 2003, 12:42:14 AM
After taking off the head and resetting the timing, the bike seems to have two problems:

1) The revs seem to climb slower than normal at 4000-7000rpm when I try to rev the motor.  The hesistation is not terrible, but it doesn't feel right.  

2) The bike will hang at 3000rpm at closed throttle unless I ride the clutch a little, then the bike will idle normally again.  If I give it gas though, the revs climb back to 3K.  I think this might be a carburation problem as it sometimes occured even before I pulled the head.  I have 40 pilots, turned out 3 turns I think, but they might still be too lean.  (Although I don't understand why the problem tends to come and go)

I checked the timing a bunch of times and each time got the cams facing each other, with each arrow in the right place and 18 links between the #2 and #3 arrows.  

No knocks, clashes or otherwise abnormal noises.  And no more oil leak, at least for now.

Thanks

Adam
Title: Bike back together and running, but ....
Post by: JamesG on October 06, 2003, 05:39:25 AM
intake leak. check yer carbs.

Could also be a intake cam clearancebeing out of toleranace, but you just finished mucking about with the cams right?
Title: Yes...
Post by: The Buddha on October 06, 2003, 08:09:00 AM
After Intake leak... the next choice is lean... try opening up the air screws. Make sure your cables aren't binding, or choke is sticking open or valves staying open due to clearance being too less or some like that.
Cool.
Srinath.
Title: Bike back together and running, but ....
Post by: Adam R on October 06, 2003, 04:34:34 PM
I think I did have an intake leak, as I had failed to fully tighten down the screws on the intake boots.  Did that and now the engine revs strongly to redline.  But, the bike seems to bog and die after a couple minutes of riding.  Then it will start up again and work fine until it bogs again.
Title: Bike back together and running, but ....
Post by: mjm on October 06, 2003, 05:46:01 PM
Quote from: Adam RI think I did have an intake leak, as I had failed to fully tighten down the screws on the intake boots.  Did that and now the engine revs strongly to redline.  But, the bike seems to bog and die after a couple minutes of riding.  Then it will start up again and work fine until it bogs again.

Check for: leak in vacum line to petcock or bad petcock or partly plugged fuel outlet on tank, pinched fuel hose, tank mounted petcock not fully open - Your symptoms sound like fuel starvation/inadiquate fuel to carb since it runs fine while float bowls would be fulll - empties them, won't run until they have a chance to fill again.
Title: Bike back together and running, but ....
Post by: Blueknyt on October 06, 2003, 11:47:52 PM
Might even have to reset the Float levels on the carbs.
Title: Bike back together and running, but ....
Post by: Adam R on October 07, 2003, 12:57:54 AM
I don't think its a fuel problem, because I'm running a hose through a Pingel Petcock to the tank, and I can see fuel in the the clear fuel filter.  

As for the float bowls, would the float bowls change position by themselves?  I did have the carbs off the bike for maybe a week or so.  It's almost like the motor won't run after it gets hot.