Help Needed
#11
08-18-2008 | 02:07 PM
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Joined: Aug 2008
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RE: Help Needed
Checked oil in the sump, mostly oil but very thin, so petrol could be in the sump, but not worried about it. Took airbox off, put petol down the trumpets and managed to run the bike for about 20 secs, put tank back on without airbox and fired up bike, it ran with petrol still coming out of said hose, put finger over hose engine died instantly.
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????????????????
#12
08-18-2008 | 02:40 PM
Joined: Jun 2008
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RE: Help Needed
MattG I had the very same problem with my F4 this spring. If the carbfloats are stuck or the jets are clogged the fuel gets siphoned out of the carb bowl and goes through the air box and down that dump tube by your fairing. Im 99% sure that if you clean your carbs you will no longer have that problem. The gas looks nice and clean because it is, it is the gas that just left your tank and tried to get to the carbs.
#13
08-29-2008 | 03:19 PM
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Joined: Aug 2008
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RE: Help Needed
Ok, today I had time today to work on my bike, tank and airbox off down to trumpets manged to fire it up and have it running at around 3500 rpm any lower it died, petrolstill coming out of bottom hose butvery little aroundtrumpets, before getting into getting carbs off to clean which looks like a serious job and very ackward, any pointers would be much appreciated, or is it just the case of biting the bullet and stripping the carbs................ How the fu*k do you get to them? It looks like you have to strip half the bike to even get to the hoses, that join the crank case.
[:@]
[:@]
#14
08-29-2008 | 05:14 PM
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RE: Help Needed
ORIGINAL: MattG
Checked oil in the sump, mostly oil but very thin, so petrol could be in the sump, but not worried about it. Took airbox off, put petol down the trumpets and managed to run the bike for about 20 secs, put tank back on without airbox and fired up bike, it ran with petrol still coming out of said hose, put finger over hose engine died instantly.
????????????????
Checked oil in the sump, mostly oil but very thin, so petrol could be in the sump, but not worried about it. Took airbox off, put petol down the trumpets and managed to run the bike for about 20 secs, put tank back on without airbox and fired up bike, it ran with petrol still coming out of said hose, put finger over hose engine died instantly.
????????????????
Stuck float , sticky needle ?
When you block the hose , the petrol floods the engine , thats why it dies ...
Pull the carbies off for maintenance (if you have time)
"so petrol could be in the sump, but not worried"
#15
08-29-2008 | 05:40 PM
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Posts: n/a
RE: Help Needed
As an atrempt at avoiding the carb removal thing ..
You can try carby cleaner .. fuel additive.
If the carbies are not too bad (inside) , the cleaner will free up the floats and needles to some extent..
Try any good brand and measure it out correctly..
(a hint mate) empty your tank , measure out a few litres of fuel then add the correct amount of additive for the litres you put back in...
Do this, then park her where the flooding fuel can run away safely, run the engine for a few minutes to see if it stops flowing out ..
Try tapping gently on the carb bodies while shes running with the blunt end of a screw diver to shake free any sticky floats ...
good luck :-)
You can try carby cleaner .. fuel additive.
If the carbies are not too bad (inside) , the cleaner will free up the floats and needles to some extent..
Try any good brand and measure it out correctly..
(a hint mate) empty your tank , measure out a few litres of fuel then add the correct amount of additive for the litres you put back in...
Do this, then park her where the flooding fuel can run away safely, run the engine for a few minutes to see if it stops flowing out ..
Try tapping gently on the carb bodies while shes running with the blunt end of a screw diver to shake free any sticky floats ...
good luck :-)
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