Fuel Pressure Regulator Removal/Replacement - VTXOA
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post #1 of 22 (permalink) Old 03-31-2017, 10:16 PM Thread Starter
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Fuel Pressure Regulator Removal/Replacement

2002 VTX 1800; gas running out of exhaust. Based on research, the FPR has gone bad. I ordered/received a new one. Now I need help removing it from bike.
Has anyone seen a video of one being removed/replaced?
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post #2 of 22 (permalink) Old 04-01-2017, 08:51 AM
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No videos, just How To's written up to follow;
http://tech.bareasschoppers.com/carb...ure-regulator/
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post #3 of 22 (permalink) Old 04-01-2017, 10:50 AM
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It's not hard. Easier with the tank elevated in the back, or off. 2 small bolts, not much torque, be careful. Front one easy, the back one needs a little finesse with either a wobble extension (1/4") or U joint with socket. Make sure you remove the black plug covering the O ring on the backside of the new FPR!

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post #4 of 22 (permalink) Old 04-01-2017, 03:09 PM Thread Starter
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Thanks guys for the information.
So, I do not need to first remove the fuel rail to which the FPR is attached?
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post #5 of 22 (permalink) Old 04-01-2017, 09:16 PM Thread Starter
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Ok. So, I replaced the FPR. But that did not fix the problem. When I attempt to start the bike, it won't start; acts like it's flooded. Fuel is steadily streaming out the middle of the exhaust pipe. Not the end of it. I can't tell if it is running down the bottom of the pipe to the lowest point or if maybe the pipe is rusted in that spot and that is where fuel is escaping.
I'm stumped. Anyone have any ideas?

Thanks
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post #6 of 22 (permalink) Old 04-01-2017, 11:12 PM
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Do you have an addon fuel manager??? Power commander, etc...
Disconnect it if you have one.
If not disconnect the injector connectors...
What is the crankcase oil level?? Sometimes the crankcase level
gets high, could be pumping gas from crankcase vent into air box.
Good thing the 1800 has the De-compressor holding EXH valve open preventing
hydraulic lock when cranking...

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Last edited by Hans&Feet; 04-01-2017 at 11:24 PM.
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post #7 of 22 (permalink) Old 04-02-2017, 12:14 AM Thread Starter
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No add-ons. Everything is stock.
I'm not sure where injector connectors are or how to disconnect them. What will that accomplish? Then what after disconnecting them?
Bike has been sitting for a while. I doubt crankcase oil level is high, but, I will check it.
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post #8 of 22 (permalink) Old 04-02-2017, 11:42 AM
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If you are getting that much fuel you may have one of 4 issues.
1) Did you remove the rubber cover on the new FPR.
2) You possibly have a stuck injector.
3) You possibly have a bad fuel manager, if you have one.
4) You have a leak on the vacuum line to the FPR.

For the FPR, pull the vacuum line at the FPR and turn the key on. If fuel is coming out of that vacuum port then your new FPR is bad. If the hose to the FPR is leaking, it will act as if you are WOT all of the time. That is the lowest vacuum scenario and when you'd need the most fuel. At idle it will increase rail pressure to maximum, really pouring it in. With that said, I'm not sure I've ever heard about raw fuel making its way out the exhaust. That's a lot of fuel.
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post #9 of 22 (permalink) Old 04-05-2017, 09:02 PM Thread Starter
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Quote:
Originally Posted by Harkon View Post
If you are getting that much fuel you may have one of 4 issues.
1) Did you remove the rubber cover on the new FPR.
2) You possibly have a stuck injector.
3) You possibly have a bad fuel manager, if you have one.
4) You have a leak on the vacuum line to the FPR.

For the FPR, pull the vacuum line at the FPR and turn the key on. If fuel is coming out of that vacuum port then your new FPR is bad. If the hose to the FPR is leaking, it will act as if you are WOT all of the time. That is the lowest vacuum scenario and when you'd need the most fuel. At idle it will increase rail pressure to maximum, really pouring it in. With that said, I'm not sure I've ever heard about raw fuel making its way out the exhaust. That's a lot of fuel.

Thanks for the feedback.
1) I did remove the rubber cover on the new FPR. I read about that one item a ton on these forums. Glad I did.
2) How would I find out if the injector is bad? I don't know where they are.
3) I don't know if I have a fuel manager - 2002 VTX 1800C.
4) I will check the vacuum port and hose.

The leak is bizarre. It isn't coming out of the end of the exhaust. It streams from the bottom near the center of the length as if there is a hole there. I can't really tell if there is a hole; the angle, lighting, and its being wet prohibits me seeing it clearly. It may also be leaking elsewhere and then running to that spot before running off (lowest point).
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post #10 of 22 (permalink) Old 04-10-2017, 04:20 PM Thread Starter
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How do I get to the injectors to check them?
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