Modern Vespa

my motor seems so stall out when the motor is cold if i don't give it any gas. if the motor has been idling for about a min and i give it a good flick on the accelerator it stalls out, is this a sign that my idle speed is too low, how would i know what the 1650rpm setting is like? thanks.

If you've sorted the idle settings as per the wiki (one hopes you have) then:

Two words - valve clearances. (quoting DougL, but it might become a mantra...)

Here's the best way of doing it: LX150: Installing a Tiny Tach

The cheap way follows:
The GTS idles at the same rpm as the S150, but it's fuel injected and electronically controlled. If you have access to a GTS/super adjust the S150 exhaust puffs to match the GTS's.

If you can't find a GTS, here's a video clip with a fair amount GTS sound at idle. http://www.vimeo.com/2191420
Adjust your engine speed to match the sound of the GTS's

Harvey

that is really cool idea harvey, and i am going to look at the wiki, i completely forgot that was there, oops. but i have not yet tinkered with the scoot, so i could not have messed anything up too bad. lol

An easier way that doesn't require drilling and wiring

Poor man tach

thanks i will look in to the cheap meter, that looks like the rout to go apposed to guessing.

It will work. You just have to be patient and let a few seconds pass after each small adjustment. You'll see the change in the reading.

i can deal with that, i just want to be close to 1650rpm as possible.

Isn't the Hardline unit that you used, just a variation of the TinyTach (which I suspect is cheaper)? Couldn't you therefore take the same approach with a TinyTach; that is, simply don't mount it permantently?

I don't have a tinytach, so can't comment for sure. I know that the hardline tach uses a wire that simply snaps into the unit, and then can be unsnapped when done. Basically, you just attach the unit when you need to get a reading. Of course, you can also hard wire it in, but I suspect that it isn't up to the daily torture of being in the engine area.

I checked the product sites, and it seems that the Hardline unit uses only a pickup wire, while the TinyTach also requires a ground connection. Also, the Hardline unit is claimed to have a "lifetime" battery, but TinyTach states that theirs is "5+" years; since the battery is not replaceable in either case, I guess you just toss the unit when the battery dies. So, for my purposes, it seems that a removeable Hardline device is the better choice.

Psst. I heard that.

You are awful, but I like you.