4 replies to this topic

[SeaDoo Challenger 99]

Hello, I am in the middle of rebuilding all 4 of my carbs. I went by local seadoo dealer and picked up fout new mikuni rebuild kits. Well the kits come with two diff pop-off springs. Before I took the carbs apart the values were 36 psi for the mag and 34 psi for the pto. Well, now that I installed the spring that looked like the old one the new readings are around 25 psi for both. And if i install the other spring that is just hair longer my readings are around 46 psi on both. The service manual says 38 psi +/- 12 psi.

My question is better to leave in the old springs that are around 36 psi or the new lower psi spring or the higher psi spring? What difference will I have with lower or higher psi pop-off value? I was guessing that I need to install the new higher psi I spring since it is new and in spec with the service manual of the 38 psi +/- 12 psi.

Thanks for your help in advance...

Jimmy

[Kevin Leclair]

Based on the manual stating 38 psi +/- 12 psi I think you would be safer with the little longer springs that are reading 36 psi.

[SeaDoo Challenger 99]

Based on the manual stating 38 psi +/- 12 psi I think you would be safer with the little longer springs that are reading 36 psi.

Well, thats the issue. The old spring is reading 36 psi. And the two new springs are ready 25 psi and 46 psi.

I installed the new 46 psi last night but carbs are still laying on the bench waiting to see what you guys say about this before I bolt them up and adjust them. Would there be any issues running close to the max psi?

[Kevin Leclair]

I wouldn't think there would be any issues if you are still in the thresholds of what the manual specifies.

[Rave1]

I used my old springs,had the same readings as your getting from springs in new kit.Doo runs fine.