F4i - Main Forum Main F4i discussion board

F4i Fuel relay problem! Fuel wont prime.

Old 05-04-2014, 02:45 PM
Junior Member
Thread Starter
Join Date: May 2013
Posts: 10
Default F4i Fuel relay problem! Fuel wont prime.

I really need some help on this one. So my fuel pump won't prime due to the unknow. The bike ran fine no issues except code 7, which is coolant temperature sensor. And also I got code 23, which is o2 due to me having aftermarket exhaust. Now with that said my brothers f4i fuel pump relay went out and I gave mine to test it if it'll fix the problem. It fixed his problem but when i put it in my bike the fuel pump won't prime. So we put it back on his bike and it worked! I bypassed the relay by jumping a brown and black/white wires. Fuel pump starts priming nonstop and I can start the bike just fine. So far I have checked all of fuses they are all fine, checked ignition, kickstand, tip over sensor, and its all good THE RELAY JUST WONT CLICK, my engine stop relay clicks but not my fuel relay, so i checked voltage and i get 12v to the relay from brown and black/white wires i also get 12v from white/back brown/black, but when i connect the relay i get 12 v from brown and black/white, but i only get 1.08 volts from white/back brown/black This is pissing me off! Can someone help me where can I look into. Im Going to a shop right now to buy a new relay may it's my relay tripping but it doesnt explains why it works on my brothers bike but not mine.
Old 11-01-2015, 09:40 AM
Junior Member
Join Date: Aug 2008
Posts: 4
Default Fuel Pump wont Prime!!

OK, I am having the same exact problem you are having I was just wondering if you ever found what was causing this problem I have checked everything and still cannot figure out please help!
Related Topics
Thread Starter
Last Post
F4i - Main Forum
09-28-2014 04:31 PM
C Jacob W
F4i - Main Forum
07-29-2013 11:03 AM
Jesse Bailey
General Tech
04-20-2013 06:42 PM
F4i - Main Forum
08-12-2010 02:18 PM
F4i - Main Forum
03-17-2009 05:25 PM

Thread Tools
Search this Thread
Quick Reply: F4i Fuel relay problem! Fuel wont prime.

Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.