Ok, so recently I made a thread "New Carb Options" where I was looking for opinions on some new carbs where my factory Q-Jet wasnt running right. I was told from a few people to keep using the Q-Jet if possible, so, I found one that I had kicking around out in the garage and decided to slap it on and give it a whirl.

First things first, this carb runs much better then the one that I was using. However, there is a fairly big hesitation now at WOT, not so much when the car is in park but when the engine is under load in drive it is most noticeable.

I should tell you while I was at the car I did a compression test (lowest compression was 180 PSI highest was 190), checked/adjusted timing, checked spark plugs for excess carbon/proper gap, replaced fuel line after me being a dummie and kinked it off, adjusted the choke and mixture on the new carb, adjusted the idle, re-routed some vacuum lines to proper locations and replaced the thermostat. Oh and cut down the rear drums and adjusted the rear brake shoes, but I dont really think that is relevant in this post.

I have been told that where the carb has been sitting for about 5 years or so that the seals may be dried out and may need a tank of gas or two to moisten up, the hesitation dosnt seem quite as bad but its still really noticeable.

Any help would be greatly appreciated!

Trent

 

have you tried manualy opening secondaries to see if plates or metering rods are sticking?if its been sitting that long maybe just rebuilding it would be a good idea.

 

haven't tried any of that, any idea how I would go about it?