bog problem on 02 800

[deboer]

i have a 2002 summit 800 zx and yesterday i went out to ride and it bogged out when i went to hit the throttle so i put my spare plugs in and this didn't help it any so i put brand new plugs in today and i'm still having the bogging problems through out my hole RPM range and i have no clue what to start doing to it
so any help out be nice thanks

 

[jwill302]

check your belt

 

[vendetta]

is it when you get to a higher elevation?? cause my 700 did that.

Rob

 

[mgeary07]

If that thing is bogging out man check your jets!

Your pilot jets control your low to mid range. Sometimes you have to jump up even 3 or 4 sizes larger.

If the jets arent the case I would adjust your low idle screw and open it up to allow a little more fuel in.

Hope this helps

 

[akbietz]

Check to make sure your carb boots aren't cracked or torn, or it may be a cracked or chipped reed pedal.

 

[deboer]

ok 1st what does the belt have to do with the engine bogging
2nd why would i need to change my jets sence this is the first time this has ever happend
3rd i dont change elevations that much to make a difference
4th i put new reeds in at the begging of the season last year

 

[mgeary07]

Well as far as the jets and idle adjustment goes, its a starting point.

Look over everything to see if anything is out of norm.

I had the same issue recently. Up'd my pilots and played with a few idle adjustments. Runs strong now.

 

[deboer]

but see i just don't understand why it would be my jets because 2 day before i went to ride monday it was running like a champ and i have never had this problem

 

[vendetta]

so my 700 bogged out at higher elevation and i figured it to be the tube for the dpm that sits in front of the air box. i pluged the ends with silcon cause i think it was not sealing anymore and not putting enough pressure in the carbs and starving it for fuel. let me know if you have any questions

Rob

 

[jwill302]

if your belt is bad it wont allow the clutch to operate correctly. it is simple to check. make sure the sides are not worn. a belt for as simple as it is makes wierd things happen.

 

[Stuck]

Check to see if you have a clogged main jet. Also, check the choke cable. I have seen them stick once they get worn out and cause a bad bog. If it is sticking just a little it will do it.

 

[Summit8]

02 DPM had calibration issues or the manifold may be leaking. Get rid of your DPM, vent the carbs to the top half of the airbox and rejet, Power-Jets are a great replacment for the 02 crappy DPM calibration, carbs need hooded neddle jets and adj. needles also.
Call Big John at SledHead Racing for parts and specs.