Modern Vespa

So I'm seeing the mechanic tomorrow. Every time there's a major weather change or something and my tank is full there's a random stalling incident. I've had three in 4 months so it's pretty much a mildly annoying thing that happens monthly. Last time was in July, before then it was may.

My oil is old as dirt, getting that changed tomorrow. The bike starts right back up again, after two tries, usually is OK afterwards. Runs fine otherwise.

The battery is reading at 12 or a tiny bit less volts so that's OK, vollt meter doesn't go crazy while revving so I'm assuming its not electrical.

I'm missing my fuel cap, I'm gonna get a new one asap but that's a possible culprit.

Anyone else know what could cause a random low rpm stall out ? It's a 2006 gts 250 so I've assumed it's not the fuel pump, it wasn't running super hot either. It was just a bunch of bumper to bumper traffic for 20 minutes

Bikes also 10 years old and I bought it at 2000 miles and put 3k on it. It hasn't had much maintenance in its life time so I'm sorta thinking maybe spark plug cause it's old

Deferred maintenance could be anything... Sounds like your planned trip tomorrow is much needed - I hope you get it sorted and can be (reliably) back in business soon!

loose/bad earth (ground) from the battery? had a sporadic stalling/cut out on a brand new bike 10 years ago. dealer (under warranty) couldn't pin point it and swapped out ecu's a couple of times, still no fix. went at it my self late one night and saw arcing from the main earth pylon (because it was dark) 1/2 turn with a 10mm spanner was all it took. hope you get to the bottom of it and it doesn't cost too much.

Mechanic said everything was fine. They did a look over and a computer scan. I think it was just an oxygen/temperature change hickup or an over full gas tank or the fact that I don't have a cap for gas tank currently.

There's a bit if grease underneath the bike, the rear wheel had a mysterious fluid on it earlier that may have been a result of the recent tire change that I didn't notice till now. The grease hasn't returned after cleaning it and running it all day so in thinking probably road grossness. There is a cable under the bike that has a lotta grease on it. The metal bar near the center stands got sent grease too. The actual engine is pretty clean

Sheesh am I worrying too much on this? Don't wanna be mountain stranded that's all.

If your resting battery reading is at 12.0 volts, then it is 90% gone.

250's are usually bulletproof. Not a good thing to run around without a gas cap. Even tho it's a close environment bugs can get in there and foul the system. We have cockroaches here that can get under the seat. ask me how i know. Since it's come back from the mechanic have you had any problems? Except for your battery (what year is it) i think your ok. Just do some trips closer to home to make sure it's good to go but like i said,their a good reliable scooter.Don't worry about the "what if's".

Are you worrying too much about what? Not changing your oil and filter when it is due? Not replacing a fuel cap when you lose one? Not replacing a weak battery? No, I'd say worrying about keeping maintenance and repairs current is a good thing. How is your tire pressure? How much rubber left on the tires? When was the last time you changed out your coolant or brake fluid? Has the throttle body ever been cleaned?

no worries on that in Illinois

and when did I become oil?

Time to get that fancy digital multimeter. I got a manual one. What's a fully charged battery at? These things tend not to give clear warning when the battery gives out

To be fair it's been confusing. I got no manual and bought the bike used half a year ago. I'm doing the best I can. Probably sat in a garage and got extremely light use in suburban Evansville for 10 years

http://www.marxrv.com/12volt/12volt.htm

It's a bit down on the page, but this may be helpful....

Fancy digital multimeter sez 12.78

Mighta been a funky oil filter. I've essentially put the first 4000 miles on it and I'm sure the old guy never got in changed. The shop did six months ago but I did put 4000 miles on it since. Starting to think maybe it's an air filter or a bad batch of gas or overfilling the tank

Fully charged and fairly new - 12.6 volts

Thats resting with the power off right? Cause it drops when the power is turned on before the ignition switch is hit(obviously)

Correct.

OK so i found this leak underneath the bike today