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Enduro Engine 4 stroke (including EFI & Exhaust) 4 stroke engine, EFI, and exhaust discussion |
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#1
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Gunshot sound while starting
Hi,
I disconnected the blue/yellow wire as I was asking in a earlier post and left the black wire. My main concern is upon startup, if I start with throttle closed, bike will randomly make a loud "GUNSHOT" noise when I hit the button. If I start with throttle at half-open or more, it roars to life first try. Additionally, here is what I have noticed after disconnecting the blue/yellow wire : Blue/yellow Disconnected : -seems to run moderately better/less hot thru all RPMS . -bike never backfires on decel. -Harder starting (with throttle closed) - (LOUD "gunshot" backfire sounds when trying to start (button) - needs to start with throttle half open (starts 1st or 2nd time as long as I do that) Before (With wires connected): -seemed to run a bit hot/lean -pipe would glow red at cruising speeds (cool outdoor temp) when throttle opened more -started not super easily, but would start, w throttle closed. Sometimes had to kick the bike manually a couple times . |
#2
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Is this something to worry about or not?
Valves? Is this popping on startup a sign I could be damaging something ? Paranoid to ride ... :-( |
#3
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its fine, just a bit of fuel backfiring in the exhaust. Ride it like you stole it!
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