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17 Posts
What I warm my my 01 busa up I give it throttle it spudders and pops back fires what could be the cause or the fix
Back fire
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It could be a number of things. Is it possible to make a short video of the problem? Others with more experience may be more inclined to help if they can hear and see it as well.
I would start by checking the condition of the spark plugs. Usually a good indicator of the running condition of the engine. Plenty of information on the internet of what good and bad spark plugs look like. While you're there, just replace them. Cheap and easy enough.
Is it happening at idle? or high rpm? or Hot? or cold?
Is this how you bought it? When did it start doing it?
Are you getting any error codes?
Others have mentioned to do a fuel flow test on the fuel pump, clean/replace the internal filter, clean the tank, check TPS, check operation of STVA. Have you done any of these?
I would start by checking the condition of the spark plugs. Usually a good indicator of the running condition of the engine. Plenty of information on the internet of what good and bad spark plugs look like. While you're there, just replace them. Cheap and easy enough.
Is it happening at idle? or high rpm? or Hot? or cold?
Is this how you bought it? When did it start doing it?
Are you getting any error codes?
Others have mentioned to do a fuel flow test on the fuel pump, clean/replace the internal filter, clean the tank, check TPS, check operation of STVA. Have you done any of these?
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3,047 Posts
Again, more information is required...
Did it just all of a sudden happen? Or did you get a tank of shitty gas? Have you recently had work done to the bike, and a vacuum line is off etc?
Did it just all of a sudden happen? Or did you get a tank of shitty gas? Have you recently had work done to the bike, and a vacuum line is off etc?
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8,263 Posts
cam timing, ignition timing, foul mix, unsynced TB's, just to name a few
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17 Posts
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I replaced the plugs bout July last year but have not rode it much I will take a video of it I was leaning towards the TPS MY SELF but it only when it warms up how ever when I’m on the a ride I give it full throttle it bogs down I’ll let up and it takes off in a burst I think the filter could be changed I bought it back in 8/2018 bern the best bile my dream bike I just have not been able to ride her as much ty I’ll take video tomorrow and post in morning
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17 Posts
No error codes it starts right up it just recently started doing I only run 92 oct
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8,263 Posts
nake sure your gas hasnt rotted, I had a tabnk ful rott onthe busa in just 4 months.. same thing, ran like crap, of course I am like man it needs a TB sync worse than ever, checked for vacuum leaks, all sorts of crap, then I smelled the gas.. putrid
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17 Posts
Well I’m gonna take tank off drain it clean it and check filter on it go from there migh go head and change plugs again since I’m there
If it's really dirty in there, you might also want to back flush the high pressure filter as well. I heard that can cause problems too.
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17 Posts
Well I’m gonna take tank off drain it clean it and check filter on it go from there migh go head and change plugs again since I’m there
i took video of it it’s back firing out of the left side pipe
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17 Posts
I’m gonna pull tank off today’s and flush it out best I can see if the filter is bad dirty
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22 Posts
My '06 Busa back when it was N/A did the bogging down on WOT and then a burst of speed when letting it off at ~75% throttle. Turned out the in-tank fuel filter was the culprit, all clogged up. Recommend getting a new filter, or drill that one out and install an in-line filter, which is cheaper and easier to take care. As for the backfire, as mentioned before, that could be a throttle body or bodies that are out of sync or fouled spark plug(s).
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I will check the filter and the spark plugs as well thank you I think the filters the prob though the guy I bought it from I’m 2 bd owner he said he never changed it ever so that’s good indication it’s the filter
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