fuel starvation

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muppet
Posts: 62
Joined: Tue Aug 16, 2011 5:35 pm

fuel starvation

Post by muppet »

took my vtr dragbike for a test session at the strip on sat ran 11.0 but speed was down to 114 mph from 124 mph i had run previously, i was running without a air filter with 200 mains but had hesitation and feeling of the bike holding back at full throttle so rolled the throttle off and it pick up, so i thought too lean so replaced the air filter and rejeted to 190 so back to my settings when i ran with 124 terminals but the problem was the same :thumbdown: now thinking back the only other thing i did was put 2 inline petrol filters in the fuel pipes, are these bikes at the limit on fuel flow as standard ? if so im hoping this was the problem, so maybe a pump needed ?
tony.mon
Posts: 16290
Joined: Wed Jul 25, 2007 10:46 pm
Location: Norf Kent

Re: fuel starvation

Post by tony.mon »

You can fit a fuel pump really easily, but if you're going 2nd hand I'd suggest using a car one, they're available from breakers for pennies.
But the pipework from a VFR fits nicely, so I'm led to believe.

Try it; if you've put the air filter back to where you were and that's the only change you've made, there's your culprit.
It's not falling off, it's an upgrade opportunity.
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gilson
Posts: 928
Joined: Mon Sep 03, 2007 3:31 pm

fuel starvation

Post by gilson »

Pre1999 cbr600 pump works well. But also others work too.
No bike (yet).
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