Quadrajet. Vacume

[Rich Novak]

1988 v6 205 up. Pachanga. 19 ft.

Quadrajet 4 barrels
Iis it possible to set the carb using. Vacuum
If so where is the port located.

 

[Bondo]

Ayuh,.... Most, if not All boat carbs don't have vacuum ports,....

Ya use yer ear, 'n a tach to set the settin's,...

 

[Rich Novak]

Thanks for the confirmation..n

 

[Lou C]

There is no vaccum port because the distributors do not use vaccum advance like cars used to, however, there is a plug in the rear face of the carb mount on the intake manifold that probably could be removed and a port could be installed. I just use my tach dwell meter.

 

[Rich Novak]

Thanks

 

[kenny nunez]

When the throttle plate is removed you will see 2 plugs pressed into the float chamber. JB weld will take care of it.

 

[jimmbo]

The Q-jet has a vacuum operated choke pull off. Put a tee fitting in it and you have your vacuum port. Don't disconnect the pull off if you are going to run the boat at speed, it also, on most Q-jets, controls/dampens the air valve above the secondaries

 

[Rich Novak]

Great idea,thanks

 

[CamaroMan]

rpm speed is a good indicator.. use the weber best lean idle procedure, works on every carb. pretty much turn it in lean till it starts bogging - back out 1/4 turn. Sometimes u can find the best spot down to an 1/8 of a turn - but not so with 2 mix screws.