Red hot glowing exhaust pipe

Discussion in 'The Garage' started by ChuBrocka, Apr 13, 2012.

  1. ChuBrocka

    ChuBrocka Been here awhile

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    I have power loss and a red hot glowing exhaust pipe on my 2006 Triumph Scrambler (only the top pipe). I'm bright enough to know that's bad, not new enough to have little to no idea my it happened. It's my first bike and I've had it just over a year. Here's the tale:
    - nice ride of Thursday afternoon and stopped for gas part way along. Made the noob mistake of buying the ethanol blend
    - everything was running sweet and about 70 km later we got near our destination and stopped to check a map for the last short stretch
    - after checking the directions I had a bit of trouble turning it over and once it was running the power was way low and things got louder
    - only had about 2 km to go so I powered through. Let her cool down for about 20-30 minutes and decided it may be the ethanol blend causing carb issues.
    - got rolling again and rode about 4 km to Canadian tire with the bike seeming to run better. Bought a gas can and siphon and replaced the ethanol blend with premium.
    - started heading home and everything seemed good again, but about 60-70 km into the ride there was a sudden power loss again.
    - at this point it was late, cold and we had 60 km to go so I had to limp it home and it got to the point that the top exhaust pipe was literally glowing red hot. I stopped repeatedly to let it cool off a bit and managed to get it home.

    It's at the shop this morning and I thought I'd see what you guys thought so I don't get taken for a ride. Based on my description the guy at the shop (without looking at it yet) said probably the worst case scenario is a blown ring that would probably end up in the neighborhood of $2000 to fix. Any thoughts on what the problem may be?

    I'll update the post once the shop has had a look and gives me their theory.

    No word from the shop, but here is a pic for your viewing pleasure:
    [​IMG]

    Thanks for all the tips folks! Awesome how quick people respond to this kind of thing.

    The gas was 10% ethanol and 89 octane if that helps.

    A muffler fault sounds good to me in this case. The fella I bought the bike from sold it with two extra sets of pipes (Triumph TORS and Thunderbike pipes). I put the stock ones on so I didn't piss of the neighbors in my townhouse block. Still no word from the garage though. They looked pretty busy pulling bikes from storage when I dropped mine off so I guess I'll cut them some slack on that.
    #1
  2. matey peeps

    matey peeps Bead Buddy

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    Perhaps an intake air leak, leaning things out and heating everything up? Happened on my lawn mower, would run great for a bit but as things warmed up a gap would open between the Carb and the intake and it'd lose power and overheat.

    Sent from my DROID X2 using Tapatalk 2
    #2
  3. bisbonian

    bisbonian Long timer

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    Using gas with ethanol in it did not cause this.
    #3
  4. Tim McKittrick

    Tim McKittrick Long timer

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    Given it's the muffler glowing red and not the header I'd first suspect a collapsed baffle or some other fault with the muffler itself. If these have converters built in then an occlusion could easily lead to the power loss and overheating. It may be time to spring for those aftermarket slip-ons you have been hoping for.
    #4
  5. stainlesscycle

    stainlesscycle Long timer

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    +1
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  6. bomber60015

    bomber60015 Anatomically Correct

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    whatever caused it (it cold be a valve not closing, an air leak, as noted, or any one of a number of things), it wasn't the gas . . . . .a collapsed ring sounds odd, as well . . . .
    #6
  7. willis 2000

    willis 2000 neo-quixote

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    Did you fill up with E85 ethanol blend? This will most assuredly cause problems, usually before you get to the street. A friend did this to a Toyota and it quit after two blocks. The dealer got it going for 200 bucks, and it took two subsequent fuel filter changes to get it right.
    #7
  8. trumpet

    trumpet Group W Bench

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    +1 for a failed cat. Was the header pipe glowing too? Might have tried a different muffler pack, before giving it to a shop.
    #8
  9. ChuBrocka

    ChuBrocka Been here awhile

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    The only thing glowing was the top muffler. Cooked the chrome pretty well.
    #9
  10. LuciferMutt

    LuciferMutt Rides slow bike slow

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    You have a faulty exhaust. The engine is not the problem.
    #10
  11. Switchblade315

    Switchblade315 Long timer

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    I agree it looks muffler related. i'ed have them look there first before they screw with your motor and screw you out of your hard earned cash.
    #11
  12. viverrid

    viverrid not dead yet

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    +1

    Ethanol is the bew Great Satan, the new Bogeyman. Every damned thing is ethanol's fault, like everything used to be Bush's fault and now it is Obama's. Not that I'm in favor of it, but that's all that is sold at gas stations everywhere I've lived for the last couple of decades. All our cars/trucks, bikes, chainsaws, mowers, etc. all run on ethanol blend.
    #12
  13. HapHazard

    HapHazard Waiting for Gudenov

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    +1. Or bail the bike out and check it out yourself to minimize possible "screwage".
    #13
  14. stainlesscycle

    stainlesscycle Long timer

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    remove just the muffler, go for a spin (yeah it'll be loud..) bet your power comes right back. it is not engine related, or an air leak. it looks exactly like a failed catalytic.
    #14
  15. booger1

    booger1 Been here awhile

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    +1 on the muffler, get it out of the shop before they try and prove it's ring related and your paying to have it put back together.
    #15
  16. ChuBrocka

    ChuBrocka Been here awhile

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    Hey folks,

    Thanks again for all the input. I just got off the phone with the shop. Their diagnosis is a faulty igniter in one cylinder causing unburned fuel to get to the hot exhaust pipe where is was burning and causing the warm glowing warming glow in my photo. $690 for the part and 45 minutes labour. They also recommended the 20k km scheduled service for $500. I'm 2k km away from there, but inclined to get it done in case my igniter problem caused any other little issues and since it's already in the shop ahead of a week long voyage I have planned for June.

    So, thoughts? Opinions? Seems rational to me, but I have limited experience so all I have is their word and some logic to go by.
    #16
  17. LuciferMutt

    LuciferMutt Rides slow bike slow

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    I suppose that makes sense. Ignitor? Coil pack perhaps? As long as you are happy and the bike is running right, that's all that matters...
    #17
  18. stainlesscycle

    stainlesscycle Long timer

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    faulty igniter in one cylinder? do they mean bad spark plug???

    brand new cdi = http://www.electrosport.com/street-...2365-t1292950-t1291100-t1291150-t1292370.html

    sounds to me like awful expensive for the part....... 45 mins labor means AT MOST the tank needs pulled. goddamn do i hate dealerships.
    #18
  19. Tim McKittrick

    Tim McKittrick Long timer

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    Perhaps by "Igniter" they are referring to the triggering coil that gives the ignition system it's spark signal... I've always heard them referred to as the pulse coil, but it's all just words. In any event, that's a perfectly plausible explanation for the condition seen.

    As for the $500 20K service... what all are they going to be doing? Unless it's a lot more than an oil change and general once-over that looks like a lot of money to me. I'm a big fan of doing all the maintenance one is comfortable with doing if for no other reason than to grow one's familiarity with one's equipment. I also think it leads to a greater sense of independence and self reliance, and grows your general knowledge base.

    All good stuff, in my view.... but if you don't particularly like tinkering on the bike I understand the desire to let the dealer take care of things.
    #19
  20. ChuBrocka

    ChuBrocka Been here awhile

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    Ok guys, i just went to the shop to go over things with them in person. Here's the full deal:

    - igniter (cdi unit) $687.01 installed (Triumph part)
    - 20k km service $900 all in ($500 was a mix up on my part). The 20k km service is the biggy that includes the valve check/adjustment
    - front brake rotor is near wear limit and worn unevenly so rotor and new pads installed is $365
    - they say the exhaust pipe should still be fine because it has steel baffles as opposed to fiberglass

    I didn't authorize any of the work for now so I can look into this. Looks like there are options for aftermarket cdi units that they can't or won't order but they'll put on anything I bring in so I'm thinking I'll track one of those down.

    If I can get one in Canada I may try to install it myself and maybe do the brake, but then take it in for the 20k service because I can see myself getting in way over my head on that one. I'm all for doing my own work and learning the bike, but that's too big a leap for me.
    #20