Quadrajet Question, Fuel smell

[Michael A.]

Re: Quadrajet Question, Fuel smell

It could be a leaky fuel bowl. As in nearly all carburetors, the Quadrajet's bowl had pressed-in plugs used to seal holes left after drilling fuel passages during the manufacturing of the carburetor. These plugs in the Q-jet sometimes leaked fuel causing; (a) a cold engine being hard to start, (b) erratic idling, (c) poor fuel mileage, and (d) excessive emissions. Many Quadrajets have their fuel bowl plugs sealed with epoxy when rebuilt to prevent leaks. Attached is a picture of the plugs that typically leak on Q-Jets.

[John H.]

Re: Quadrajet Question, Fuel smell

These plugs in the Q-jet sometimes leaked fuel causing; (a) a cold engine being hard to start, (b) erratic idling, (c) poor fuel mileage, and (d) excessive emissions.

And (e) the second-largest recall in GM history for engine fires.

[Brandon T.]

Re: Quadrajet Question, Fuel smell

Mine smells up the garage like gas too, It's been rebuilt a few years ago but thinking about having it SHOW rebuilt and re colored etc maybe if theres a problem it will be corrected then.

[Lawrence R.]

Re: Quadrajet Question, Fuel smell

This has got to be the best site for help and what a wonderful bunch of people, Thanks for all the help will let you know what happens when I get it fixed.

[Jim T.]

Re: Quadrajet Question, Fuel smell

And (e) the second-largest recall in GM history for engine fires.

My brother-in-laws 66 Bonneville engine caught on fire on a trip, and burned. He loved that car. This happened after I changed out the Q-Jets on my 68 and 70 Corvettes in 1974 to Holley 650 6210 650cfm spreadbores.

[Clem Z.]

Re: Quadrajet Question, Fuel smell

My brother-in-laws 66 Bonneville engine caught on fire on a trip, and burned. He loved that car. This happened after I changed out the Q-Jets on my 68 and 70 Corvettes in 1974 to Holley 650 6210 650cfm spreadbores.

the front plug at the fuel inlet most likely popped out

[Clem Z.]

Re: Quadrajet Question, Fuel smell

i wll post a picture of GM fix as soon as the other computer where i have a scanner warms up.

[Clem Z.]

Re: Quadrajet Question, Fuel smell

i wll post a picture of GM fix as soon as the other computer where i have a scanner warms up.

here is the GM fix. zoom to 200% to see it better