Thread: Pop Off question
06-09-2010, 03:10 PM #1
Pop Off question
When checking pop off pressure is it normal for the needle and seat to sometimes "Leak" Releasing pressure slowly (using WD-40). Then try it again and get the more "violent" pop off ?
The needle looks new no obvious signs of wear.
Or is my needle and seat shot ?
06-09-2010, 04:23 PM #2
- Join Date
- Jul 2007
- Cedar Rapids,Iowa
Check it a couple of time. If the tip is partly dry it may leak. Remember the seat normally stays wet from fuel.
06-09-2010, 04:38 PM #3
- Join Date
- Oct 2006
- Cleveland OH
You need to wet the needle every time you test it.
No it shouldn't leak.
06-11-2010, 08:05 PM #4
Thanks for the Replys
It didnot leak if I soaked it good.(pop off)
I also rebuilt the Pentagon shaped Mikuni fuel pump while I was at it. The motor in this 96 SL780 has the "Transition holes" on the oppisite side of the butterfly. The initial low speed adjustment is 1-3/8 turn out. Both of my other ski's are 1/2 to 5/8 turn out.
I took it out yesterday and it had a real lean spot off idle. I ended up with the screws about 2 to 2-1/4 turns out. It got alot better. I can floor it and it will run real strong up to top end. But if I chug along @ 2500-3200 rpm and mash the throttle it has a hesitation/bog.
i had some issues with fouling plugs before this rebuild so Im not crazy about cranking the low speed screws out much further.
Any thoughts or experience is appreciated.
How many turns out are your ide screws
Just what the heck is "normal" for a stock 96 780?
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