Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
FJR Motorcycle Forums
Technical & Mechanical Problems
2005 fuel pump problem
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Yamaha FJR Motorcycle Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Constant Mesh" data-source="post: 1397433" data-attributes="member: 615"><p>"The fuel pump only runs when the fuel rail isn't pressurized."</p><p></p><p>False.</p><p></p><p>There is no fuel pressure sensor in the control loop of the fuel pump. At "key on" the pump runs for approximately three seconds and then stops. It restarts when you crank and start the engine.</p><p></p><p>The pump is powered from the same relay as the fuel injectors. If the injectors are powered the pump is running.</p><p></p><p>It would be nice if there was a switch to cut the power to the injectors when the engine was flooded with fuel. You could crank the engine with no fuel being injected.</p></blockquote><p></p>
[QUOTE="Constant Mesh, post: 1397433, member: 615"] "The fuel pump only runs when the fuel rail isn't pressurized." False. There is no fuel pressure sensor in the control loop of the fuel pump. At "key on" the pump runs for approximately three seconds and then stops. It restarts when you crank and start the engine. The pump is powered from the same relay as the fuel injectors. If the injectors are powered the pump is running. It would be nice if there was a switch to cut the power to the injectors when the engine was flooded with fuel. You could crank the engine with no fuel being injected. [/QUOTE]
Insert quotes…
Verification
Post reply
FJR Motorcycle Forums
Technical & Mechanical Problems
2005 fuel pump problem
Top