Best Answer

You need a spark arrestor. The above statement is true if one of the exhaust manifolds or mufflers is cold or cooler than the other.

Unburnt gas igniting in muffs. Bad unclean carbs is also a possibility. My old quad used to do that to I think that when you let off the gas the rpm's are still kind of high and more air is getting to the engine and less gas and it kind of backfires sort of like but its not a bad thing I might have it backwards it could be running rich to.

User Avatar

Wiki User

โˆ™ 2009-07-07 20:17:16
This answer is:
User Avatar
Study guides

How do corporations raise money

Which type of graph compares parts within a whole

Which of these is a major advantage of a corporation

The goal of basic science is

See all cards
2 Reviews

Add your answer:

Earn +20 pts
Q: Why does my XR100 shoot fire from the muffler when I let off from the throttle to slow down the bike?
Write your answer...
Still have questions?
magnify glass
People also asked