Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Freshly rebuild carb: low vacuum, very rich off-idle to part throttle. PLS HELP!

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Tjesse:
Hi Cliff,

I couldn't resist any longer and opened it up today. I found many things wrong...

- That little clip between the float and the needle; simply NOT there  :o
- Float level (without that clip) is 11/32 in stead of 7/32"
- Primary metering rods are 43B in stead of 44B
- Primary metering rods hanger; bent (upwards towards a rich mixture)

The 'rest' looked clean and nice and according to the factory specs.

I will order the required parts from you this week.

Thank you for your support!

Grtz, Tjesse

77cruiser:
You don't need the clip, if the hanger was bent that might be part of the problem. What size are the jets?

Tjesse:
Hi Jim,

The Jets are 74.

Thanks, Tjesse.

Tjesse:
Forgot to mention that also one of the 74 Jets was partially blocked and I suspect preventing the rod to lower into the Jet for a lean(er) mixture. With as result both supplying a too rich mixture.

Grtz Tjesse

429bbf:
if you don't do anything else replace the acc. pump with a good quality like cliff sells or else you will be back in that carb in a very short time. fwiw

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