Vfr 400 possible fuel starvation
Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
-
- Settled in member
- Reactions:
- Posts: 4
- Joined: Mon Apr 23, 2018 3:26 pm
Vfr 400 possible fuel starvation
Hi all,
My vfr 400 has started to give what I think is fuel starvation at 5500rpm. Just backs off. Idles fine and goes fine till that threshold . Any ideas?
My vfr 400 has started to give what I think is fuel starvation at 5500rpm. Just backs off. Idles fine and goes fine till that threshold . Any ideas?
- gavins
- Site Supporter
- Reactions:
- Posts: 241
- Joined: Tue Feb 16, 2010 1:45 pm
- Bike owned: NC30, ER6f, K5 750
- Location: Worthing, West Sussex
Re: Vfr 400 possible fuel starvation
Will it just not rev past 5500ish at any time, i.e in neutral as well? Assuming an NC30 and assuming the speed restriction hasn't already been bypassed, check that the 3 pin connector from the back of the speedo is connected properly. If this is disconnected altogether the bike just won't rev past 5k from memory.
- CMSMJ1
- Moderators
- Reactions:
- Posts: 9806
- Joined: Thu May 01, 2008 9:42 am
- Bike owned: NC30-No9
- Location: Chesterfield, United Kingdom
Re: Vfr 400 possible fuel starvation
^^ what he said :)
Welcome to the site.
Have a search for 5500rpm or 5.5k and you will find oodles of data - the bottom line is that if the bike CDI cannot "see" the speedo then it cuts 2 cyls.
Easy fix and we've all been there!
Welcome to the site.
Have a search for 5500rpm or 5.5k and you will find oodles of data - the bottom line is that if the bike CDI cannot "see" the speedo then it cuts 2 cyls.
Easy fix and we've all been there!
IMPERATOR REX ANGLORUM
The V4 is the law..
NC30 - No9 - my old mate
The V4 is the law..
NC30 - No9 - my old mate
-
- Settled in member
- Reactions:
- Posts: 4
- Joined: Mon Apr 23, 2018 3:26 pm
Re: Vfr 400 possible fuel starvation
Thanks for the reply. I'll check that out after work and let you know.
-
- Settled in member
- Reactions:
- Posts: 4
- Joined: Mon Apr 23, 2018 3:26 pm
Re: Vfr 400 possible fuel starvation
Hi guys, checked all connections but problem persists.
-
- Senior Member
- Reactions:
- Posts: 1910
- Joined: Mon Sep 20, 2010 11:55 pm
- Bike owned: VFR400
- Location: Blue Mountain NSW Australia
Re: Vfr 400 possible fuel starvation
The detector electronics in the speedo could be faulty. As already suggested, disconnect the 3 pin connector from the speedo and apply the bypass to the loom side. The document library on the home page has instructions.
-
- Moderators
- Reactions:
- Posts: 9358
- Joined: Fri Jul 04, 2008 1:01 pm
- Bike owned: CBR954
Re: Vfr 400 possible fuel starvation
as magg has said... remove the speedo sensor plug and jumper the wire.
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...
-
- Settled in member
- Reactions:
- Posts: 4
- Joined: Mon Apr 23, 2018 3:26 pm
Re: Vfr 400 possible fuel starvation
Thanks guys. Followed instructions and all sorted. Thank you very much.