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fuel supply issue?

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Factoryrsvr
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fuel supply issue?

Post by Factoryrsvr on Mon 02 Nov 2015, 12:29 pm

Hi,

I carried out my yearly service over the weekend (oil, plugs, filters etc) and everything was running fine after I had put everything back together. I went to use the bike for my usual ride to the station this morning and while it started fine it wouldn't rev above 1,500 to 2,000 rpm and then wouldn't start. it feels like a fuel supply issue, think it ran ok afterwards as it had fuel in lines maybe?  I didn't fully remove the tank when changing the plugs, I just disconnected the the two short pipes from the tank and pivoted it round to change the plugs. I checked all the pipes are connected and everything seems fine. Is there anything else I should also check?

Cheers
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Llewelyn1965
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Re: fuel supply issue?

Post by Llewelyn1965 on Mon 02 Nov 2015, 12:49 pm

check you haven't kinked or trapped the fuel line when you put the tank back.
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teamster1975
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Re: fuel supply issue?

Post by teamster1975 on Mon 02 Nov 2015, 1:06 pm

A really daft suggestion, check you haven't inadvertently turned the fuel tap off!
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ashcroc
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Re: fuel supply issue?

Post by ashcroc on Mon 02 Nov 2015, 1:51 pm

@teamster1975 wrote:A really daft suggestion, check you haven't inadvertently turned the fuel tap off!
Been there, done that! Embarassed
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teamster1975
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Re: fuel supply issue?

Post by teamster1975 on Mon 02 Nov 2015, 3:59 pm

@ashcroc wrote:
@teamster1975 wrote:A really daft suggestion, check you haven't inadvertently turned the fuel tap off!

Been there, done that! Embarassed

Yep, me too! Embarassed
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jerryfudd
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Re: fuel supply issue?

Post by jerryfudd on Mon 02 Nov 2015, 4:08 pm

check the vac line on the inlet to the fuel tank..... its the smallest bore one of the 3.

even if the tap is on unless there is a vacuum it will shut the fuel off.

Dan
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jchesshyre
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Re: fuel supply issue?

Post by jchesshyre on Tue 03 Nov 2015, 3:22 pm

Check the spark plug caps are on properly (and on their correct cylinders?!). 

Also check you haven't trapped/kinked the fuel tank breather hoses. I did that once and was stumped for a while. 

Finally, check there's enough fuel in the tank!!
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eternally_troubled
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Re: fuel supply issue?

Post by eternally_troubled on Wed 04 Nov 2015, 1:01 pm

@jchesshyre wrote:Check the spark plug caps are on properly (and on their correct cylinders?!). 

Also check you haven't trapped/kinked the fuel tank breather hoses. I did that once and was stumped for a while. 

Finally, check there's enough fuel in the tank!!

No - check there is fuel in the tank first.  I have made that mistake and it is really really annoying.
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jchesshyre
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Re: fuel supply issue?

Post by jchesshyre on Wed 04 Nov 2015, 1:07 pm

Quite right! Badly worded on my part.
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jerryfudd
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Re: fuel supply issue?

Post by jerryfudd on Wed 04 Nov 2015, 1:22 pm

...or get a carb setup tank to test with, always useful to have around for running the bike with the tank off and can be sure there is fuel getting through plus easily set the idle, mix, etc (just block off the inlet vac line when using).

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