Question about 2004 Honda VTX 1300

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Bike has cobra pipes,backfires when I let off gas,lot of popping when running steady speed.

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  • Honda Master
  • 41,842 Answers

Hi Jeffeifs, and the usual suspects are:
1. Loose, corroded, or broken battery cable ends inside the cable harness especially the "NEGATIVE" cable at both ends.
2. A severely drained battery.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
For more information about your issue, please visit the websites below, and for specific information or questions, please feel free to contact me at xlch@mail.com. Good luck and have a nice day.
http://www.mdxiles.com/VTX1300_Service_03_04.pdf

Posted on Sep 27, 2015

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6ya6ya
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Posted on Jan 02, 2017

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firenut119
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SOURCE: crf 150f backfire

change the jetting...youcan contact FMF for thier setup recommendations for running that pipe with the bike...very common problem and jetting will take care of alot of the issue

Posted on May 03, 2009

  • 125 Answers

SOURCE: 1984 Aspencade backfires in midrange RPMs

1. Check timing belts and ignition timing.
2. Service carburetors

Posted on Jun 15, 2009

  • 32 Answers

SOURCE: I bought this bike which was garaged for 1 1/2

strip the carbs and clean the pilot jets

Posted on Jul 07, 2009

  • 635 Answers

SOURCE: vt1100c2 backfires through pipes on deceleration -

Could be running too lean, check the color of your plugs to know for sure, black and dry is rich white and blistered is lean.,

Posted on Apr 03, 2010

pugwash814
  • 377 Answers

SOURCE: My Sabre has Cobra pipes and a Jet Kit, but I can

its also recommended to increase the main jet by 2 sizes for every change,( filters, pipes etc )so your main jet needs to be 4x bigger than it was standard..

Posted on Apr 04, 2010

Testimonial: "Thanks for the information. We did use the recommended Jet Kit and settings per Cobra, but just can't seem to get it to stop popping/backfiring. "

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What I did was put a k/n filter. put a stage 2 jet kit and a cobra slash cut exhaust and this seemed to reduce the amount of backfireing alot.
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Is the running fast question answered? Give me more information on the problem if it isn't.

Please rate this answer. Thanks njv6!

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