Bogging issue on a 2002 summit 800

[Stickyfingers]

I have been working on my 02 zx summit 800 it will start up decent and seems to run good however when you punch the throttle there is a hesitation/bog breifly then it opens up great. I put new plugs in it and drove it around for about an hour and they were a perfect creamy brown colour. I compression tested it and it was at 135 psi per cylinder. I ripped the carb apart on it and it looked brand new inside but i cleaned it anyways and put it back together. it still bogs!! I am getting sick of working on it by now anyone have any idea what it could be? all i can think of now is it has the thing can with basically no backpressure. Any help would be appreciated I wanna get this thing going good for my trip next weekend.

 

[Barker]

What's your stator voltage at idle?

 

[snopro]

Pilot jets are good and clean?

 

[Stickyfingers]

Yah the pilot jets seemed excellent the carbs were very clean internally and I will have to check the voltage tonight after football is over. Also when you decelerate then get back on the throttle it gets the small bog aswell. I hope I can figure it out tonight.

 

[Barker]

Also check the carb boots really good for cracks or leaks! If you have sacked springs in primary or secondary would cause a low end bog, clean clutch good and inspect! And did you move your fuel screw if it's to rich off the start it would cause a bog,

 

[MK4TDI]

When it's bogging try flipping the choke a bit to see if it gets worse or better, it will help give you an idea if its a lean or rich bog. I had a similar issue with my 02. Ended up changing out the reeds as they were shot, and I put some different needles in the carbs.


Sent from my Shoe Phone

 

[slededjr]

check reeds and carb boots as mentioned already. If good, change pilot jets from 17.5 to 20. or adjust your mixture screw. Always ran #20 pilots in my 800's.

 

[Stickyfingers]

ok so it is now fixed switched main jets from 480s to 430s and it cleaned right up thanks for all the info people!