starting issue
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Junior Member
Joined: Dec 2010
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starting issue
I have an 03 F4I with 6200 miles that starts up no problem when its cold but after the bike warms up it gives me a hard time every time I try to start it. Does anyone have any ideas as to why this is happening?
Senior Member
Joined: Nov 2010
Posts: 117
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From: Las Vegas, Nevada
Check your fuel pressure regulator.
It is located under the fuel tank on the fuel rail. It has a vacuum line attached to it (it's the skinny rubber hose), pull the vacuum line, if it is dry it is good but if it's wet with fuel then you need a new one.
It is located under the fuel tank on the fuel rail. It has a vacuum line attached to it (it's the skinny rubber hose), pull the vacuum line, if it is dry it is good but if it's wet with fuel then you need a new one.
Member
Joined: Feb 2006
Posts: 64
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From: Ontario, Canada
my bike started right, I let it warmed up a bit. when I cranked the throttle it shuts off & it will not start back up. You can hear the pump & it will turn over but it will not fire. I replaced the plugs. It starts right away but again when I crank the throttle it shuts off & will not start again. Anybody has any suggestion?
Junior Member
Joined: Feb 2011
Posts: 11
Likes: 0
I am in a very similar situation as you. I pulled the vacuum line off my fuel pressure regulator and it appears to be dry. I recently did a fuel flow test and the service manual states that it needs to flow about 6.4 oz in ten seconds and my bike was only doing half of that. Right now I am looking into the fuel filter to see if that will do the trick. Trying doing a fuel flow test and see what you get.
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