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
Running on three cyclinders
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="Ignacio" data-source="post: 512932" data-attributes="member: 434"><p>Fuel, air, and spark. The last is the most common problem by the way.</p><p></p><p>Air doesn't sound like an issue or it would usually affect more than one cylinder. Unless it's a fundamental compression issue.</p><p></p><p>Sounds like you're getting fuel if you're smelling it. An inefficient injector is likely going to be more rough running and unless cylinder walls are being washed down you probably wouldn't smell unburned fuel once up to temperature.</p><p></p><p>Spark. Could be the plug, the plug boot, the plug wire, the coil. How many miles since you last changed the plugs. If 8,000 or more and the stock plugs this is where I'd begin as they should be replaced anyway. Fairly easy job and great opportunity to upgrade to Iridiums.</p></blockquote><p></p>
[QUOTE="Ignacio, post: 512932, member: 434"] Fuel, air, and spark. The last is the most common problem by the way. Air doesn't sound like an issue or it would usually affect more than one cylinder. Unless it's a fundamental compression issue. Sounds like you're getting fuel if you're smelling it. An inefficient injector is likely going to be more rough running and unless cylinder walls are being washed down you probably wouldn't smell unburned fuel once up to temperature. Spark. Could be the plug, the plug boot, the plug wire, the coil. How many miles since you last changed the plugs. If 8,000 or more and the stock plugs this is where I'd begin as they should be replaced anyway. Fairly easy job and great opportunity to upgrade to Iridiums. [/QUOTE]
Insert quotes…
Verification
Post reply
FJR Motorcycle Forums
Technical & Mechanical Problems
Running on three cyclinders
Top