Suzuki Quadrunner 500 - FIXING Backfire & No Rev

On today's video we purchase this 2000~ Suzuki LTF500FW.
Previous owner states it was backfiring and sputtering so they gave up on trying to fix it.
We get it running and troubleshoot the running issue which turns out to be a faulty vacuum petcock.
Stay tuned to see the exact issues it has and how we fixed it!
P/N for basic non vacuum petcock Suzuki 44300-19B01
0:01 introduction
0:26 starting with starting fluid
0:36 flames
0:47 running on test tank
1:08 bad backfiring
1:33 describing the troubleshooting research
2:03 plugging vacuum line
2:42 testing to see if it worked
3:04 test drive
4:30 describing the problem and showing the vacuum port
5:45 replacing the petock
6:33 showing the repair
7:21 conclusion

[@fjl69]

I just bought the same exact quad. It had the same exact problem. Poor idle and back firing. Your video helped out tremendously. Turns out that there was nothing wrong with my petcock. The vacuum line from the carb to the petcock got too hot and the vacuum collapsed the line. No vacuum no gas. The carb looked brand new but I took it apart anyway. The air/fuel screw was put together in the wrong order and I moved the clip on the main jet to the 3rd spot. Runs like a champ now. Thanks for the insight.

[@StanwoodStudios]

So glad this video helped!! I’m glad you got your quad up and running.

[@cmonkey4158]

I got a quad master and this fixed mine same thing just fully automatic

[@StanwoodStudios]

Hell yeah! Glad the video helped!

[@kaylynnwheeler4378]

do you know where the air fuel screw is

[@HiLift2]

Bottom of the carb towards the intake boot.
try 1 3/4 to 2 1/3 turns out from being fully, but gently, turned into the seat.

[@jimg8218]

If Intake boot is leaking could that cause a vacuum problem ?

[@StanwoodStudios]

Yes, you can test while the engine is running spraying the boot down with starting fluid and listening for a change in rpm

[@tcboutdoors6898]

Do you know how many quarts of oil this engine calls for?

[@davidkizer9915]

3.4 quarts, it takes that much due to the wet clutch

[@COUNTRYASFUCK82]

Do you still have this bike? I'll buy it. Or do you have any bikes right now that you're trying to sell?

[@anniemooney6601]

Poor old girls got the farts.