Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Poor MPG's

<< < (2/3) > >>

Cliff Ruggles:
The float level is listed in the instructions that are supplied with our kits, but keep in mind that each carburetor was set-up for the original application.  If using it on something else that what it originally came on, it may require a different float height.......Cliff

tony79gmc:
I bought your HP kit and book for the Q-jet, but I didn't see any instructions in the box.  What's a good starting point for the float level? I plan on starting the rebuilt tomorrow.

omaha:
i think the book recommends 1/4 inch for a starting point.  {Good luck on the knee surgery Cliff.}

Ethan1:
 13/32" is the correct float level for that carburetor number.

 EDIT: Yes, a good starting point is 1/4". 13/32" was the original float level setting for the 305cid engine.

tony79gmc:
I set the float to 15/32, I found an instruction manual from the rebuild I attempted about 4 years ago.  For the 4.3 V6 it listed 13/32 for 1985 and 17/32 for 1986 Astro van. so I just slit the difference.  I have been driving it a couple of day and it appears that the MPG have improved.  I think the main reason it was poor to begin with is that the hanger arms for the main metering rods were bent up ward and were not letting the rods go down in the jets very far and was letting a lot of gas thru.  Is the 17084226 carb supposed to have the plastic filler cup on the passenger side of the carb?  If so mine is missing, does anyone have one if its supposed to be in this carb?

Navigation

[0] Message Index

[#] Next page

[*] Previous page