Weber rebuild help

[Bpine]

I have 3 Weber 48 IDF’s on a Toyota 3.4L in a class 1 car. Each barrel has its own runner to the cylinder. Not a common plenum. I obviously need to rebuild them and I just received the kits today. So I Guess I have a few Questions. The reason I am rebuilding them is, ½ to full throttle is fine :D . It has a lean deceleration back fire and is a little hesitant off idle to 2500 rpm :confused: ! forgive me if these are lame questions! :eek:

1. Best way to Synchronize them?

2. Common problems to look for?

3. I noticed in the directions, it recommends to leave the air bypass screw closed. I see mine are currently about ½ to 1 turn out and my idle mixture screws are ½ to 1 also!
What is the Air Bypass used for? Bypass from/for what?

4 tricks of the trade?


Thanks in advance :D

Bpine

[Erik Irvine]

When I rebuilt my Weber, I bought a book for about $15 which helped out alot.

About the 0-2500 rpm problem, have you cleaned out the idle jets? The idle jets are the smallest jets in the Weber carbs, which make them the easiest to get dirt in. When my idle jets are clogged it will run like crap in the low rpm's then cleans out in the higher rpms and if they are really clogged backfiring will happen. I hope this helps

[partybarge_pilot]

The easiest way to synch them is a 4 tube vaccum meter like used on motorcycles.

[WannaB-class5]

Anyone know where I can get 44 webber rebuild kits? I heard webber is no more, that true?????