I am no genius but doesn't the O2 sensor only work in the low RPM range? Least that's what I have herd hear before. The other thing I can't fathom is somebody owning an FJR and never getting over 5K RPM. :blink: Sorry I just had to mention that. Is it possible to be lugging the engine and have fuel building up in the exhaust. Seems the cats can't keep up or they are not doing there job to burn off the excess gas getting by. As far as the dealer, STAY FAR AWAY FROM WHOEVER YOU BROUGHT IT TO. If they tell you there is nothing wrong with pipes like that to me they have there head up their ARSE. I can't recall ever seeing a FJR that bad.
Wow, I've got to agree with FredW, even though he's mostly wrong (
)...it appears something "ain't quite right" with your FJR.
Very nice writeup Radio. I will try and get a pick of the header pipes and see. Call me a chicken but I have been hesitant to take off the fairing. I haven't done it before and I can see doing it my first time and putting a nice scratch or tear in it and having to pay good $$ just for being a newbie. The thing i keep thinking back to is that the pipes weren't like this when I bought it. All the discoloration happened in the last 1k. If the headers aren't as discolored, would that lead us back to an sensor problem/disconnected/barbarian jumper mod issue?Wow, I've got to agree with FredW, even though he's mostly wrong (
I took the liberty to zoom in on you photo...
"A", the mid-pipe, should NOT be that blue. The mid-pipe, as is the entire system, is stainless steel, which DOES turn gold (of a sorts) with heat and age. But blue...or in your case BLUE is fairly unusual. That is the sign of too much heat. As the mid-pipe normally doesn't get that hot, it also explains why the muffler, "B", is turning brown/gold. It's getting the kind of heat that normally only turns SS headers gold, so it, too, is getting way too many BTUs.
At this point, I'm wondering if there is something wrong with the catalytic converter, causing the excessive heat dissipation. Just curious...what color are the header, specifically in the area between the arrows...
If the headers themselves aren't as blue as the mid-pipe, then the engine would seem to be running alright, and lending more credibility to the cat-con being the culprit. However, if the header pipes are as blue as the mid-pipes, then the heat is coming out of the engine.
See if you can get a shot of the headers and post up.
You don't have to take the plastic off. Put the bike on the sidestand, turn the handlebars all the way to the left, and from the right side, you'll be able to see where the header enters the cat-con chamber. The 02 sensor is plugged in the end of the header where I'm talking about. Here's a pic...
if so, then join the gang. summers here are 100+ for at least a month. stop-and-go commuting will raise the temps more than constant highway speeds. i do both. i've run for 24 hours straight in temps that were around 120 and highway speeds that were spirited.i can't say i know the color of my pipes because they are covered by the fairing. other than that, the bike runs fine. i do notice they sometimes get brownish after long rides in the rain. i attribute that to cooking on the road splooge.
You don't have to take the plastic off. Put the bike on the sidestand, turn the handlebars all the way to the left, and from the right side, you'll be able to see where the header enters the cat-con chamber. The 02 sensor is plugged in the end of the header where I'm talking about. Here's a pic...
The O2 sensor is dead center of this picture and the pipe I'm referring to is the pipe the sensor is mounted on.
Not my pipes, gnatpecker...grabbed that pic off the forum. Mine look like ****. Haven't washed the bike since October '09, following the "Frankenbike Incident." :lol:You don't have to take the plastic off. Put the bike on the sidestand, turn the handlebars all the way to the left, and from the right side, you'll be able to see where the header enters the cat-con chamber. The 02 sensor is plugged in the end of the header where I'm talking about. Here's a pic...
The O2 sensor is dead center of this picture and the pipe I'm referring to is the pipe the sensor is mounted on.
Damn pumpkinseed testes.. You got sum purdy pipes.
I bet you polish your needle half as often
By Golly! I washed me balls December 09.. Me apples and yer bike are connected.Not my pipes, gnatpecker...grabbed that pic off the forum. Mine look like ****. Haven't washed the bike since October '09, following the "Frankenbike Incident." :lol:You don't have to take the plastic off. Put the bike on the sidestand, turn the handlebars all the way to the left, and from the right side, you'll be able to see where the header enters the cat-con chamber. The 02 sensor is plugged in the end of the header where I'm talking about. Here's a pic...
The O2 sensor is dead center of this picture and the pipe I'm referring to is the pipe the sensor is mounted on.
Damn pumpkinseed testes.. You got sum purdy pipes.
I bet you polish your needle half as often
And my needle gets polished TWICE as often. :finger:
In SO many disgusting ways, I don't even wanna think about it.By Golly! I washed me balls December 09.. Me apples and yer bike are connected.
That's a thought.
I think the left/right difference is significant, and by "flow problem" I was wondering about the can, not the catalyst. If the left side can is clogged or plugged, even partially, the extra flow to the right side could account for extra heat. Maybe? I confess to guessing here.
No it is very easy and very obvious. Id take them off and run a garden hose through them. Your pipes are way more blue than I would have suspected. Holy crap.
h34r:
