I am doing it because it smells of gas after riding for a few minutes.When the bike is warmed up I need to give it a little throttle to start it. Also, it seems to be hesitating very slightly when accelerating. I think it will continue to get worse if i dont change it.

 

i have extended experience with the FPR on the F4i, if anyone needs help hit me on one of the chat protocols listed...

 

I got this changed out today. Wasnt too bad, glad i tried it myself rather than pay the $200 labor a shop quoted me. Also changed my oil because it was mixed with gas. I hope this was because of the FPR ?? It runs smoother now and starts right up when hot.

 

if your FPR was bad. you will have a flooded engine. gas in the oil is totally normal when your FPR goes bad.. just be sure to get it changed asap before letting the bike run for more then a minute or two.

wannaride, plan on changing that oil again in 500-1000 miles as you want to get that excess gasoline out of the motor/oil

when your FPR is bad, gasoline cant return to the tank & therefore over-pressurizes your injectors flooding the cylinders..

cheers glad you got it changed out!

 

How do you know if you have gas in your oil??

 

The Fuel Pressure Regulator is vaccuum operated off the intake. If the Diaphram inside the FPR cracks it will allow gas to flow through it and directly into the intake. I reciently had an experience with this that flooded the intake, cylinders, crankcase, and exhaust full of raw liquid gas (around 2 gallons).

 

So, I do not have a bike yet, but im am looking for an 01 - 03 model F4I. I
looked everywhere online and finally found one in Ft. Lauderdale florida. The
bike seems perfect for me. 2002 model, 3990 miles, adult driven, never
wrecked or even dropped. I flew down from Charlotte to pick the bike up and
after we exchanged money and title i packed up my stuff and went to jump on.

 

The bike was idling, but before i could drive off it died. i started it back up and
noticed that it would'nt idle. I asked the gentleman if he had ever had this
problem before and he said no suggesting that it might be cold still. He took it
around the block and when he came back it was smoking bad and would die as
soon as the throttle backed off. We thought it was old gas so we pumped out all
but about a quart and replaced it with 93 octane.

 

When we tried to start the
bike it would not turn over. Thinking the battery was dead because it had sat
so long we decided to buy a new battery and put it in. SAME THING. The bike
would'nt turn over. We thought MAYBE we got a bad battery so we hooked it up
to jumper cables and tried to start it again. After a number of attempts we got
the bike to turn over a couple of times. The gentleman's wife came outside
yelling STOP STOP and to our shock we saw raw liquid gasoline shooting out of
the tailpipe. (not a little, but a stream). HOLY HELL, WTF!?!?!?

 

We knew we needed to get the gas out of the cylinders and crankcase so
we let the bike sit overnight so the gas would seep past the rings. We then
turned the motor over to pump out what was left and we got around a half of a
gallon more out of the cylinders and header. I have a video of the gas shooting
out of the tail pipe and rushing out of the header when we disconnected the tail
pipe.