Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
1977 Qjet coughs and sputters
Cliff Ruggles:
Unlikely the gasket has anything to do with it.
That is an excellent unit, same exact part number I've been using for decades and it's successfully powered 4 different engines in my Ventura from 300hp to over 550hp.
If it were assembled correctly with good parts it would be flawless. That carburetor doesn't even need any help anyplace for what you are doing, they are as delivered one of the very best q-jets every made. Time to look a little deeper, I'm sure it's something very easy to correct.
I would also never "assume" a rebuild has good parts in it. I have many parts that we use custom made for us because the ones from the suppliers don't make the grade.
This includes the "blue" accl pump seals, they are complete JUNK, and swell up and fail quickly in this new fuel.......Cliff
stushug:
Before the rebuild, the car ran fine until one day the carb started leaking profusely. There was fuel all over the intake manifold. I had dropped the car off for a front end alignment and they called to tell me they couldn't get the car started. I had it towed back home and sent the carb for repair. When it came back is when I noticed the acceleration issue.
Cliff, when you say look deeper, what would be the next step? Do you think I need to purchase one of your rebuild kits to make sure I have better parts? I would have no problem there. The car is barely driveable as it is running now.
Cliff Ruggles:
That would be the first place to start, install good parts and verify correct float height, sealing at the gasket under the fuel inlet seat, make sure the power piston hanger arms are exactly level and even, pressure test the bottom plugs, check throttle plates for full closing/alignment, and look for obvious mistakes or problems like a leaking accl pump check ball, sticking power piston, not sealing the gasket well between the main body and airhorn (warped) etc, etc......Cliff
stushug:
Which kit do you recommend? My carb is a 17057274
Cliff Ruggles:
I would use the SR kit, it has everything to do a complete/correct rebuild on that carburetor and get it up to par for this new fuel......Cliff
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