Rc failure :( - Honda RC51 Forum : RC51 Motorcycle Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 20 (permalink) Old 12-13-2011, 04:12 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Rc failure :(

Hey fellas, i need some sound educated advise. I have an 01 RC, and it has aquired a big issue. the bike has a pwr cmndr, so just incase this is relative to this issue, i figured id mention. For a while, the bike was idling a little higher, primarily in colder weather, but now when i come to a stop, its almost like its loading with fuel and then dying. I have noticed the gas milage dropoff, and the bike smells like its running richer. whether or not the power commander is set right, i dont know. im assumming it was because the bike was tuned for the pipes- however, the batt has just been replaced. will the pwr cmndr reset? does this sound like a leaky injector? bad pressure reg maybe? In need of some serious help quik as i do not have time to run it to honda, and can tech it at my shop myself. Thanks to any advice

Jeff
RCMRS is offline  
Sponsored Links
Advertisement
 
post #2 of 20 (permalink) Old 12-13-2011, 05:34 PM
Lifetime Premium
 
madbuyer's Avatar
 
Join Date: Sep 2010
Location: Indy
Posts: 8,335
Mentioned: 17 Post(s)
Quoted: 226 Post(s)
jondog....insert pressure regulator picture here.....



The very first schoolbook that was written had God all over it. --Dave Mustaine
madbuyer is offline  
post #3 of 20 (permalink) Old 12-13-2011, 05:39 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
ill need to pull it out of the bike. tips on the best method of removal? location of regulator? i havent pulled the bike apart yet with the exception of the tank
RCMRS is offline  
 
post #4 of 20 (permalink) Old 12-13-2011, 05:41 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
and what does jondog mean? just curious
RCMRS is offline  
post #5 of 20 (permalink) Old 12-13-2011, 05:42 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
nvm.. got it
RCMRS is offline  
post #6 of 20 (permalink) Old 12-13-2011, 06:05 PM
Moderator
 
SubSailor's Avatar
 
Join Date: Oct 2008
Location: Sarasota, FL
Posts: 6,456
Mentioned: 24 Post(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by RCMRS View Post
nvm.. got it
Have something handy to plug the fuel return hose, just in case.
SubSailor is online now  
post #7 of 20 (permalink) Old 12-13-2011, 06:12 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Sure, I'll try to get it out tonight. Does plugging the return improve issues that may be caused by the reg?
RCMRS is offline  
post #8 of 20 (permalink) Old 12-14-2011, 09:51 AM
Senior Member
 
jondog9's Avatar
 
Join Date: Aug 2010
Location: Northern CA
Posts: 8,653
Mentioned: 15 Post(s)
Quoted: 317 Post(s)
Your Fuel Pressure Regulator is probably the culprit. You guessed it. The symptoms you described is exactly what they will do.
Lift the tank, and the FPR is right there at the rear under it. Pull the small vacuum line, then turn on the key to let the fuel pump prime. You'll probably see the FPR drip or leak from that small nipple. If so, you need a new FPR. Here in CA they run about $50 at the dealer.
It's a real common thing with these FI Hondas.
btw, I still haven't figured out what a jondog is either
Attached Thumbnails
Click image for larger version

Name:	fuelPR1.jpg
Views:	252
Size:	89.2 KB
ID:	2109  

John, 2000 RC51 #000100

jondog9 is offline  
post #9 of 20 (permalink) Old 12-14-2011, 11:21 AM
Moderator
 
SubSailor's Avatar
 
Join Date: Oct 2008
Location: Sarasota, FL
Posts: 6,456
Mentioned: 24 Post(s)
Quoted: 88 Post(s)
Quote:
Originally Posted by RCMRS View Post
Sure, I'll try to get it out tonight. Does plugging the return improve issues that may be caused by the reg?
No, but it may prevent spilling fuel all over the place if the tank is full.

The fuel pump pressurizes the fuel line to 50 PSI over manifold pressure.
The fuel pressure regulator alters the fuel pressure due to altitude or ram air effect changes to maintain 50 PSI over manifold pressure.
The return path for the fuel pressure regulator back to the tank is via the fuel return hose.
SubSailor is online now  
post #10 of 20 (permalink) Old 12-14-2011, 07:29 PM Thread Starter
Junior Member
 
Join Date: Sep 2011
Posts: 15
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Ok, pulled the return line off, and fuel is raining from the nipple even without priming the system. Is this normal? It keeps draining with tank off bike too... Ideas?
RCMRS is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda RC51 Forum : RC51 Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome