Popping sound from exhaust

[Springbok]

I have big bore kit with PC3. Took the quad out today and there was a popping noise coming from exhaust. Any suggestions what it could be? Maybe PC or mabe throttle sensor??

[miles Machine]

when is it doing it, when your on the gas off the gas or cruising?

[leasureryan]

lean, or air leak

[Springbok]

Full throttle and constant speed.

[trx520chk]

sounds like you need to get a new fuel filter , it'll be worth your while

[Springbok]

I had the filter out before the ride.

[atveric132]

if you kno anybody with an ltr swap gas tanks and see what happens...sounds like the regualtor to me

[Springbok]

I have 2 LTR's. Is that the valve bolted to the underside of the tank?

[atveric132]

yea it has two little bolts that hold it to the bottom of the tank

[miles Machine]

sounds like reg to me too

[Springbok]

Is there any way I can check it without swopping it over with another??

[miles Machine]

you can do a pressure test through the regulator i forgot the specs tho

[Springbok]

I just did the pressure test on the fuel system. On one gauge I got 350Kpa and on another 285Kpa. On starting the quad with the gauge on, the pressure is exactly 295Kpa.The specification is 295Kpa,so the regulator is ruled out for now.

[Springbok]

Plugged out all my plugs and cleaned it out with DWF and it was fine for an hour or two,then it started doing it again and then was hard to start. PCIII gone bad!!!