[koldnrg]

Did a search and could not find a post that had my exact kind of issue.

Recently purchased the bike which is a 2006 Vegas 8-ball, bike sat for 2 years under a cover.

Bike runs but was obviously running lean, with a miss/stumble in the midrange, Will even stall during a down shift. Confirmed lean condition by the condition of spark plugs which were grey and dry. Changed out fuel for new clean fuel. Cleaned throttle body, inspected TB adapter and vacuum plugs, plugs were 100% gone, boot was cracked, replaced them all, bike still doesn't run right. Checked fuel pressure. Pressure jumps up to 48-49 for a split second falls down, and then once the pump cycles off pressure instantly drops to 0 maintaining no standing pressure. With bike running pressure was around 46-47. Gauge is hooked up tight with no leaks. No visible leaks anywhere on the bike.

Obviously I know these pressures are on the low side. What concerns me is the instant pressure drop off once pump shuts off. Anyone have a similar issue? I emailed the vicshop this evening, but as I sit here tonight curiosity is getting to me.

 

[PreachSF]

Filters could be a bit clogged up , especially if it just sat for 2 years. That can ruin those pumps. Another issue you may want to check is the TPS sensor.

 

[koldnrg]

Just talked to Rylan on the phone, sounds like just another failed fuel pump. Now to get that dang thing out of the tank.

 

[PreachSF]

Rylan is the guru on those fuel pumps ... best guy to refurbish those!

 

[koldnrg]

Got the old one out, and discovered the tank is in absolute shambles. The liner is peeling off chunks... pieces of the foam/plastic from around the pump were floating around in the tank, both filters were broke off the arms and floating in pieces... regulator and pump were both rusted. Touched the orings on the regulator and they crumbled instantly. Basically everything melted down in there, really amazed the bike ran at all. Ordered everything to reseal the tank once I get it cleaned so my newly rebuilt pump assembly can have a happy home.