Information and questions on GL1500 Goldwings (1988-2000)
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- Posts: 192
- Joined: Thu Apr 12, 2012 7:39 am
- Location: Venice, Florida
- Motorcycle: 1977 GL1000
2013 GL 1800 trike
Interesting discovery. Noticed a hole in the muffler on the bottom. Not big, thought it was rust like they all probably do eventually. Took the inspection camera in and a much bigger hole was discovered on an interior sheathing that appears that was created by an explosion in the exhaust. I was having backfire issues at one time. And some of those were loud. Don't know why it stopped, but it did after I replaced the auto fuel valve. Is this possible? Bought a replacement muffler off of fleabay. Mighty obliged.
- Posts: 1849
- Joined: Tue Oct 20, 2009 11:21 am
- Location: Plano, TX
- Motorcycle: 2004 GL1800, 2005 Honda Shadow 750, 2008 Yamaha R6 with RG500 engine, CRF450X, CRF230, CRF250X, XR200, CR500
Yes!! I have run several dirt bikes with gutted exhausts and the wrong jetting causing backfires, this will always harm the exhaust and baffles.Once the exhaust gets a little bit weak from corrosion (rust), a back fire causes a high pressure wave to travel down the exhaust system, it will loosen and remove rust and cause any weak parts to fail (ie holes to appear).. There is a very good chance that your backfires from earlier on did cause the failure, but I suspect the exhausts was probably close to rotted out prior to the backfires and it just hastened the process of causing a hole!! Backfires can also damage the exhaust valves, there is a lot of pressure in a backfire trying to get out the exhaust and it will weaken anything that gets in it's way (baffles included!!).
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