Darth Vader breathing

[Peder_y2k]

So I went on a 6 mile RT with my '88 VR to gas up the bike, and when I got back, the engine was running a little rough, saw no wet spot clue under the bike, so I removed the engine side covers to tamper with the pilot screws to see what happens. On 3 carbs, turning the pilot screw in all the way caused the engine to slow to almost stop, but the 4th made no difference. That meant the one carb was getting fuel from somehwere else. So I shut off the engine and heard a soft Darth Vader type labored breathing sound. Sound did not quit, so I removed the air filter and looking down the intake with a flashlight saw carb in question all wet, and could watch fuel spraying from the needle jet with each of the breathing sounds! What the...? Never experienced this before in 45 years wrenching. Decided to drain the fuel bowl and ran the fuel pump to pressure flush through the inlet valve, and sure enough, there was a small particle that came out. Reassembled and started the bike, sync'd the carbs and adjusted the pilots, and the bike idles fine once again.

Just can't figure out what caused the pulsing breathing sounds that lasted so long, as there seems no vacuum source with the engine off. Maybe engine heat was vaporizing some fuel for the pressure cycled release and resulting fuel spraying.

BTW, new fuel filter installed a week ago, so the particle likely came from the wrenching environment. I guess it pays to flush everything when fooling with the fuel system.

-Pete, in Tacoma WA USA

'83,88 Venture

[wrenchrob]

Thats the sound of the bike trying to say, I wish I was a second gen