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fuel level

  • Thread starter Thread starter gssuzukixxx
  • Start date Start date
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gssuzukixxx

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The GS750 service manual calls for a fuel level of 2.5mm-3.5mm from fuel bowl mating surface using the clear tube method. That is with the engine running at 1000-1100 RPM. Does anyone know what this would correspond to with the engine off.

Thanks
Brian
 
No..if it was meant to be a reading with the engine off, I would think they would have published that method. Ive never seen it anywhere either.
 
You can measure with the engine off just fine, just make sure the petcock is set to Prime so the float bowl needles are getting good fuel flow. Testing with the engine running provides no benefit as near as I can judge.
 
Nessism said:
You can measure with the engine off just fine, just make sure the petcock is set to Prime so the float bowl needles are getting good fuel flow.
Click to expand...

Ed, have you done this test with the engine off and again with it running to compare the two?

With the engine off there is no flow....
 
tkent02 said:
Ed, have you done this test with the engine off and again with it running to compare the two?

With the engine off there is no flow....
Click to expand...

I've done extensive testing during the writing of my carb rebuild tutorial, and the only thing I noticed is you need to make sure the float needles have some head pressure on them otherwise they won't open. With the engine running the petcock will flow without setting to prime, plus the engine vibration makes sure the needles don't stick at all. Honestly, testing with the engine running is fine but I just don't like messing with fuel on a hot engine.
 
Nessism said:
You can measure with the engine off just fine, just make sure the petcock is set to Prime so the float bowl needles are getting good fuel flow. Testing with the engine running provides no benefit as near as I can judge.
Click to expand...

Thanks Nessism. I have the levels set at 2.5-3mm with engine NOT running. But for interest sake I will check again when I have the everything back together and running to see what difference it makes with engine running.

Brian
 
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