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Old 14-05-19, 08:58 PM   #1
simon1
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Default Sv carby cuts out

Hi
I have an sv carby...starts and ticks over fine....but when I rev it it instantly cuts out....then takes 5 mins to start.....thought it might be electrical because of the the way it instantly stops.....but then with it taking a little while to start while turning over,seems like it might be fuel starvation?.....although the way it stops is so instant that I thought it would splutter a little bit before stopping if fuel starvation?....what are peoples thoughts?
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Old 14-05-19, 09:35 PM   #2
dirtydog
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Default Re: Sv carby cuts out

Has it been sitting unused for a little while?
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Old 15-05-19, 10:02 AM   #3
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Default Re: Sv carby cuts out

Quote:
Originally Posted by simon1 View Post
Hi
I have an sv carby...starts and ticks over fine....but when I rev it it instantly cuts out....then takes 5 mins to start.....thought it might be electrical because of the the way it instantly stops.....but then with it taking a little while to start while turning over,seems like it might be fuel starvation?...…..although the way it stops is so instant that I thought it would splutter a little bit before stopping if fuel starvation?....what are peoples thoughts?
Quick test.Try with the filler cap open.Sometimes a blocked cap can cause fuel starvation by causing a partial vacuum.
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Old 15-05-19, 10:42 AM   #4
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Default Re: Sv carby cuts out

Hi
Bike has not been standing.....will try the open cap and see...
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Old 15-05-19, 12:05 PM   #5
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Thumbs up Re: Sv carby cuts out

Update!!..So,the problem was,the foam that's glued under the tank was slightly lose....when reving the engine,the air filter would suck it down,enough to cover the air box hole and flood it!!!!...check your foam guys!!...thanks very much for your replys and help..
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Old 15-05-19, 12:06 PM   #6
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Default Re: Sv carby cuts out

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Originally Posted by simon1 View Post
Update!!..So,the problem was,the foam that's glued under the tank was slightly lose....when reving the engine,the air filter would suck it down,enough to cover the air box hole and flood it!!!!...check your foam guys!!...thanks very much for your replys and help..
Nice one

Glad it was a simple fix.I've had similar little gremlins over the years
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Old 15-05-19, 12:10 PM   #7
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Default Re: Sv carby cuts out

Yes glad I found it...I was going to start stripping down the loom and taking the carbs off etc!!!......
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