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GS750 stalling at full throttle

  • Thread starter Thread starter gs750e
  • Start date Start date
The air screw is at 1 turn out, I've never touched the fuel mixture screws, I could set them all at 3/4 to be sure? I'll check the intake o-rings when I'm back from work today, thanks.

When the engine is cold and I rev it, sometimes I can see a little bit of white smoke coming from where the exhaust meets the flange, so it's not 100% sealed I think (I used new original gaskets) Is that bad?
 
We dont need to be concerned with the exhaust side..its of no meaning as to how the intake side sucks fuel and air INTO the engine.

Yes I would set the bottom pilot screws at 7/8 so you know they are really really close. Then set the side mixture ( air ) screws at 2. At 1 there isnt enough air mixed into the fuel to help it ignite..so its basically trying to fire ALL the fuel but cant...follow the theory here?
 
chuck hahn said:
We dont need to be concerned with the exhaust side..its of no meaning as to how the intake side sucks fuel and air INTO the engine.

Yes I would set the bottom pilot screws at 7/8 so you know they are really really close. Then set the side mixture ( air ) screws at 2. At 1 there isnt enough air mixed into the fuel to help it ignite..so its basically trying to fire ALL the fuel but cant...follow the theory here?
Click to expand...

Damn, I can't take the intake rubbers off, the crews are incredibly stuck, like bending tools stuck. I tried spraying starter fluid from all angles onto the intake rubbers when the bike was running. The revs did not go higher when doing this, this means the rubbers are airtight right?

The fuel screws were at +- 1 turn out, I set them at 7/8.

With the air screws at 1.5 turn the problem persists, I can't 'open' them further because one of the screw heads is worn too badly, I ordered a new air scew for that carb.

Can the problem lie anywhere else than carbs? I remember when one of my coils wasn't working the bike couldn't rev beyond 4000 revs. Since then I replaced the coils, plugs, plug wires, timing advancer, points and condensers.
 
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