Quadrajet Carberator

[74 C-10 Shorty]

Here is a real carburetor website....it even has rebuilding video's.


 http://www.carburetor-parts.com/Free-Carburetor-Manuals_ep_274.html

That's one of the better sites for information.

[Steve341]

Hey All, I got that pump to work after all. Took me about two hours to get the threads started with lots of prying on the line but its on. Took some priming to get it to start but its running with the pump I bought originally. Same thing happening with the hesitation. I was talking to my uncle about it, and he was asking how it is starting. I said the starter cranks over like nothing on a cold engine. If its warm and try to restart it, the starter lags abit. He told me its more than likely timing issue. So I was having a look at the HEI distributor, and I cannot find the distributor hold down bolt. He said its only one bolt that needs to be backed off just enough so I can turn the distributor freely but not too loose. Where is this bolt, and Haynes manual does not tell me the location of it. The manual also says refer to the vehicle emissions label under the hood, The label is gone. All in all, Where is this bolt that needs to be loosened so I can play with the timing and find the sweet spot. Please say I can get at this with a ratchet or a wrench. I do not have a distributor wrench.

[80Chevy4x4]

Look where the distributor goes into the motor....you will see  almost like a hordeshoe piece of metal with a bolt going through it into the motor...that is the distributor bolt. 

[Steve341]

Back it off slightly with a ratchet and socket? Half Turn, quarter turn?

[Captkaos]

If it is tight, it may take more than that, just remember to tighten it back down.

[Irish_Alley]

and you have to use a wrench a distributor wrench would be nice

[Steve341]

and you have to use a wrench a distributor wrench would be nice

And That I do not have

[Captkaos]

If you have a used wrench or a cheap one just heat is and bend it.

[Irish_Alley]

easy to make, cheap to buy

http://www.ebay.com/itm/PRO-VALUE-CARQUEST-39633-DISTRIBUTOR-CLAMP-WRENCH-/400498568149?pt=Motors_Automotive_Tools&hash=item5d3f932bd5&vxp=mtr
http://www.ebay.com/itm/K-D-Offset-Distributor-Wrench-1-4-3-8-No-291-Brand-New-Old-Stock-Made-in-USA-/330938313423?pt=Motors_Automotive_Tools&hash=item4d0d75eacf&vxp=mtr

[Steve341]

Would this be my next step to work at the hesitation problem? Where do I want the timing set at on this 454? Don't forget I need lots of power, I don't care about fuel economy as I'm packing a slide in truck camper.

What I've done:
-Reman Quadrajet
-New plugs, and wires
-New fuel filter
-Removed inline fuel filter
-New mechanical fuel pump

[Steve341]

Could it also be my mixture screws? What is every adjustment I can tinker with on the quadrajet?

Or is the engine nearing the end of its lifespan? I sure hope not

[Steve341]

Found the distributor bolt. Got er loose with a 9/16 regular wrench taking the air cleaner off. Warming up the motor now

[bd]

....

What I've done:
-Reman Quadrajet
-New plugs, and wires
-New fuel filter
-Removed inline fuel filter
-New mechanical fuel pump

Reminder:
The crankcase was full of fuel.  Don't try to adjust the carburetor until you change the oil and filter!  You'll never get it to run quite right until you do!  You'll also risk damage to the engine.

[Steve341]

One thing I forgot to mention is that if I floor it at idle it will hesitate sometimes as well. After I tightened the distributor I took off at half throttle. Zero hesitation. But going back I think it will start

[Steve341]

So what you're saying is a simple oil change will possibly resolve my hesitation?