garrod Posted February 18, 2014 Report Posted February 18, 2014 Hey guys iv been messin with my jets for awhile now and I just put in 300 mains and my pilot is a 27.5 and iv got the Vito's performance needles and now Iv been trying everything to get this puppy to idle and can't get it too ... Then revving it it will pop and sound raspy and shoot a little backfire out of the mag side not the usual banshee sound like its lean or something. Not sure what it is any Ideas would be greatly appreciated, thanks Quote
willaduncan Posted February 18, 2014 Report Posted February 18, 2014 what do your plugs look like? Quote
garrod Posted February 18, 2014 Author Report Posted February 18, 2014 what do your plugs look like? They look the pretty good lightish brown ... I'm using br8es , should I try br9 or the br7 ?? Quote
willaduncan Posted February 18, 2014 Report Posted February 18, 2014 IDK if changing the plugs would help?? What is your static compression at? Quote
Man-O-Steele Posted February 18, 2014 Report Posted February 18, 2014 whats your elevation and mods on the bike? did you just get this bike? did it not run before you messed with it? did you do a leak down test? 1 Quote
garrod Posted February 18, 2014 Author Report Posted February 18, 2014 whats your elevation and mods on the bike? did you just get this bike? did it not run before you messed with it? did you do a leak down test? I live up here in alaska I'm 0-500 feet where I will be riding, last summer I had it over bored with new wiesco pistons top end, and put trinity stage 4 pipes through it and took the air box lid off .... When it was stock bike ran great till I did the mods . I have not done a leak down tester I am getting one today. Quote
Man-O-Steele Posted February 18, 2014 Report Posted February 18, 2014 Sounds like a air leak to me. Quote
garrod Posted February 18, 2014 Author Report Posted February 18, 2014 Sounds like a air leak to me.What's the easiest way to pin point an air leak ?? Quote
Man-O-Steele Posted February 18, 2014 Report Posted February 18, 2014 Leak down test Sent from my XT1080 using Tapatalk Quote
ATVridinMaNiAc Posted February 19, 2014 Report Posted February 19, 2014 Air leak sounds like unless its ignition related. Bad stator or something. Sent from my MB886 using Tapatalk Quote
sheerider11 Posted February 19, 2014 Report Posted February 19, 2014 Check if you burnt your harness on the pipe. I did that and it popped and one last back fire took out my reeds 1 Quote
willaduncan Posted February 19, 2014 Report Posted February 19, 2014 (edited) when doing the leakdown test have a spray bottle with soap and water, if your gauge shows you have a leak spray the soapy water around your seals and gaskets it will blow bubbles.. any time you tear into the motor you should do a compression test and a leakdown Edited February 19, 2014 by willaduncan Quote
willaduncan Posted February 19, 2014 Report Posted February 19, 2014 bad stator wouldn't cause back firing.. ijs Quote
ATVridinMaNiAc Posted February 19, 2014 Report Posted February 19, 2014 Bad stator will definitely backfire. If there is Insufficient spark on one side unburnt fuel will cause a backfire. Usually if it was a stator it would break down in the higher rpm I would imagine but you never know. Reeds are another thing I would definitely check. They'll do shit like that if the petals are cracked or have way too much gap they'll suck excessive air. Aside from that could be a pilot circuit issue or slides in backwards or fucked up just giving you some ideas. Sent from my MB886 using Tapatalk Quote
willaduncan Posted February 19, 2014 Report Posted February 19, 2014 yea makes sense my bad stator would just kill my bike never back fired but IDK LOL Quote
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