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Author Topic: Engine tap in first gear, low end  (Read 402 times)

Strycker

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Engine tap in first gear, low end
« on: April 15, 2017, 10:01:48 PM »

So I've neglected to ride my bike except about 2 times a year the past two years.  I pulled it out today to fix it up and charge it.  Then fired it up to let it run a little while to get the gas through the lines.  It's a 2008 GT250R.  I put about 11500 miles on it from 2009-2013.  Prior to today it's never had an issue after running a while. 

So long story short, after it sitting and idolling for a while (15-20 min) with light revs, after 10 mins, I decided to hop on it and go for a ride.  I dropped to first, gave throttle and I heard a thud thud thud from about 0-1500 rpm, then it sounds normal.  But it wants to stall out in the mentioned range.  Fearing the worst, I didn't go anywhere and parked it.  If I had gone out for a ride, I didn't know if I could stop and have it keep running.  It stalls out if I'm sitting still holding the clutch in 1st.  What does everyone think?  Valve issue?  Cylinder?  Being paranoid?  I've never heard this before or had it stall out like it is.
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albertinhouston

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Re: Engine tap in first gear, low end
« Reply #1 on: April 15, 2017, 11:59:37 PM »

Id honestly look at the carbs being dirty. The pilot jet is gpnna prob be it.
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Joss

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Re: Engine tap in first gear, low end
« Reply #2 on: April 17, 2017, 10:16:18 PM »

I agree with carb gunk.
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Strycker

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Re: Engine tap in first gear, low end
« Reply #3 on: April 19, 2017, 01:32:07 AM »

I've always stored it with some of the ethanol treatment.  Hope that it's only the carbs.  Guess I'll have to open it up and take a look.  Haven't done it before on the bike.  How complicated is it?   

Also, why would I be able to rev high in neutral, but under load in first it would stall?  I figured it was getting gas fine since I could rev high fine in neutral.
« Last Edit: April 19, 2017, 01:33:51 AM by Strycker »
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