carb popping 6 this time, everybody loves carb threads Options

[dem]

Drove the 914 to turkey time yesterday, about 50 miles of backroads. Seemed to be runnin' about normal with the usual symphony of only-occasional random backfires and pops. It was, of course, ridiculously fun.

Car sat til I left around 10 PM, and by then it was around 40 degrees outside. Lots of popping and stuttering at part throttle. Full throttle and it was the usual fun excitement.

The ride home on the freeway was unpleasant because the 2.7L doesn't need much throttle to keep my little car moving. Could this just be temperature related? Idle jets sized for Los Angeles (where I bought it.)?

Otherwise I assume I'm looking at checking for gunk in the idle jets, I assume.

This is my first carbed porsche, so I guess it is time to really "grok" them. Is there an obvious "start here carb newbie" direction? Book and/or web site? Googling turns up tons and tons of random stuff.

Thanks.

[J P Stein]

Your first post told me it wasn't running right from the git go....no farting/popping allowed when warm.

I would suggest you go buy yourself a syncrometer (if you don't have one) then go to the bird board & search for Weber tuning. There are some good ones there & some kinda shakey so don't settle for just the first one that pops up....do some comparison shopping. I'm way to lazy to type out how to do the Weber dance but it has been done there.

I will tell ya that Webers NEED an MSD set up (or something similar) to perform properly these days ......but first, learn the dance, get em' right and go from there.

Webers are also intolerant of mis-set float levels, excessive pressures, improper jetting, and vacumm leaks.

It took me 6 mos to finger out how to get everything right on my 2.7L....but I'm kinda slow & was on my own. You aren't.

Gud luck.