Emulsion Tubes on 48's

[Richierich56]

Hi all. I'm currently running 48 IDA's with 40 vents on my 2276 with the following jetting:

F7 emulsions
60 idles
120 idle airs
185 mains
175 airs

My 48's have no 3rd progression hole.

I was running 60 idles but it seemed to stumble on crossover onto the mains so I went to 65 idles. Seemed better on the crossover with practically no stumble but now, my plugs are massively fouled and its a shit to start.

I'm thinking about maybe changing emulsions to F2's and going back to 60 idles....Will this have any effect in the positive or is this barking up the wrong tree?

[Jim Ratto]

1. before you change any jets or emulsion tubes make sure your floats are set as per Weber's specifications, same with needle valves. If these are not exact, then the emulsion tubes will not be "timed" correctly. The emulsion tubes operate in conjunction with the fuel level in the wells they reside in. So if your float levels are off, then the emulsion tube will not work as designed and you will chase your tail. And tubes aren't cheap.

2. In my opinion your jet stack, is too rich for your venturi size and since F7 is one of the "richest" tubes available (rich in the transition from idle to main circ.), you may want to try a 165 main with the F2. But first make sure floats are dead on.

[Richierich56]

Ok Jim, thanks very much for the advice. Unfortunately I don't have a float measuring tool - I've found it hard to get hold of one.

[Jim Ratto]

if you have a pair of vernier calipers and some vacuum hose we can get you all set up. No special tools needed. 

[Richierich56]

Ok Jim, I have those so I'm ready to go....

[Jim Ratto]

COOL

pm me your email.

thanks

[Jim Ratto]

emailed you a how to

[Richierich56]

Thanks very much Jim