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C50_img_4520_1496116730 Matt Barber Quote
10/5/2017 8:49 PM

So I started the bike cold and let it idle for 2 min and I heard the motor start to sound like it was struggling,,, I reved it a bit and it blew a huge plume of white smoke then it all cleared up real quick..... WTF was that? So I just rode it easy for a few laps and no issue.

Any body experience this ???

C50_screenshot_2018_01_18_at_9.16.28_pm_1516339148 slipdog Quote
10/5/2017 9:40 PM

White smoke usually is from a coolant leak.

C50_imag0287_1436844772 nage0139 Quote
10/5/2017 9:43 PM

My initial thought is that you may have sucked some air filter oil, but I've never actually seen or tested that theory. It could explain it all, but again, just a theory.

C50_0611171249_1_1502895901 RCF Quote
10/6/2017 5:41 AM

Like mentioned above if you just put a clean air filter in that's probably the culprit , or you have a leaky valve seal which isn't a big deal as long as you're not leaving a trail of smoke behind the bike when you're riding I wouldn't worry about it.

C50_jessy1_1471467436 CarlinoJoeVideo Quote
10/6/2017 6:44 AM
RCF wrote:

Like mentioned above if ...more

I had a valve seal start to go at about 80 hours on my 16 250f and it would smoke almost like a 2 stroke. Ran fine other than that but as stated above it was a constant smoke not just 1 puff.

C50_23_1507133462 Squirtlege Quote
10/6/2017 8:12 AM

I've also had this happen from going too ham with the filter oil... usually a direct result of the amount of beers consumed prior to oiling my filter.

C50_engine.f_1455853935 BobPA Quote
10/6/2017 9:25 AM

My 450 has done this a couple of times too. It acts like it loads up like a two stroke a bit, clean it out and it is good to go.....Only happens when I use the "choke"

Jason Anderson FTW

C50_img_4520_1496116730 Matt Barber Quote
10/6/2017 9:30 AM

That's it... I just put in a new filter the night before.... and had a few beers

Thanks for the help

C50_435b3c98_c853_4180_83d6_8227f32f6bc1_1509321410 MotoMaverick989 Quote
10/6/2017 2:29 PM

White smoke can also be raw fuel. It’s what diesels do when an injector starts to have an issue and dumps a lot of fuel and the engine can’t even begin to burn it and the injector usually hangs open injecting on the other 3 strokes. Black smoke is the result of being overfueled but the engine can consume it. White is still in its raw vapor form and usually results in a hydro lock. Could’ve been a hiccup with the ignition or injector.

C50_img_1754_1507156050 Squitlege Quote
10/6/2017 2:31 PM
Matt Barber wrote:

That's it... I just put in ...more

I wasn't trying to be a smartass. It could be a bunch of things. Was just relaying my personal experience.

C50_engine.f_1455853935 BobPA Quote
10/6/2017 6:29 PM

I should add that mine only did this on colder mornings where I had to crank the bike over slow a few times to warm the battery up.

Jason Anderson FTW

C50_img_1754_1507156050 Squitlege Quote
10/7/2017 12:19 PM
BobPA wrote:

I should add that mine ...more

Shoulda poured more beer on it bob

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