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  1. bedwards

    Are my secondaries working? (Video)

    Before you break or adjust something that's not broke, read up on the quadrajet. Your linkage looks fine to me. You should feel and hear the secondaries when they kick in under a load. You really can't tell much with it not running...
  2. bedwards

    Heater core repair-not replacement-any ideas that work?

    A small jar of ground ginger.
  3. bedwards

    Quadrajet Adjustment Question

    Looks like to me your missing the vacuum actuator that pulls the choke off when warm and actuates the secondaries. That is where the port on the rear bottom goes to. I don't see how the secondaries are coming in without it. Goes where your first green circle is.
  4. bedwards

    Need help with a wobble.

    loose springs, shackles, bushings? crack in frame where they mount?
  5. bedwards

    Vapor canister leaking gas

    Selector valve failed on mine and pumped fuel from drivers side tank to the passenger side and when it was full into the canister and then into the carb vent. Barely ran trying to flood. Got it home and opened the passenger side cap and gas poured out. Either you really over filled the tank or...
  6. bedwards

    Drivers fuel tank delivery problem

    I just went through this with my passenger side tank. It was like it was running out of gas. When I switched to the driver side, it was fine. I pulled the vent loose at the carbon canister, then pulled them loose at the selector valve. Blew them out from under the hood first, then the two vent...
  7. bedwards

    Help! Not starting...

    Are you getting fuel at the injectors? When a diesel cranks but doesn't fire, usually it will have white vapor out the tail pipe. I too know little about your truck but fuel air and compression should make it fire. If its mechanical pump there should be a way to prime it. Just a tiny sniff of...
  8. bedwards

    86 Sierra cuts off while driving. Seems to flood.

    Next time it shuts off, see if air rushes in when you open the gas cap.
  9. bedwards

    Any original squares out there?

    thanks! Its got 42000 on it now. I bought it with a little over 19000.
  10. bedwards

    Any original squares out there?

    Mine's pretty much as bone stock as your going to get one this old. It has all the original interior, paint, hoses, belts. I have replaced the muffler and deleted the cat. I replaced the ignition, rebuilt the carb (again), fuel pump, tires, fluids and headliner.
  11. bedwards

    Quadrajet secondaries

    I've had a crash course in how to tune one. It would have cost a fortune to get all the adapters to make a Holley or a Edelbrock work on my stock truck. I really think if I were to change I'd go to TBI.
  12. bedwards

    Quadrajet secondaries

    Ok, I guess I am officially one of those people (Parts re-placer) It was the fuel pump all along. It runs really well now. It should, its got a bunch of new parts. It faked me off when it pumped a quart of fuel 30 seconds and I didn't have the gauges to check pressures then. It wants to tink...
  13. bedwards

    Quadrajet secondaries

    Its surging which it was doing before the rebuild, has a massive flat spot when the secondaries should be kicking in, missing under hard acceleration and popping in the exhaust occasionally like its too lean. At the risk of sounding like I was throwing parts at it, I changed the plugs and the...
  14. bedwards

    Quadrajet secondaries

    ok,, at a loss, no joy. Exactly the same behavior.....
  15. bedwards

    Quadrajet secondaries

    Give this man a prize. Got the EGR on but figured I'm this far might as well look at the carb. It was a little dirty inside from 3 years use but it wasn't that bad. No water in it. But there was a vent tube laying in one of the wells for the secondaries. I tapped it back in place and staked both...
  16. bedwards

    Hello from Alabama

    nice truck
  17. bedwards

    Quadrajet secondaries

    If I were to do this, I'd want to keep all the stock hook ups if I can. I am tired of messing with the quad. It never seems completely happy.
  18. bedwards

    Quadrajet secondaries

    That interesting about the secondary tubes. Another reason to possible want to rebuild the thing is its getting harder to start after it has sat for a couple days. It's like the fuel bowl is empty until the pump pushes more fuel up. I thought the later model quads had fixed the leak that...
  19. bedwards

    Quadrajet secondaries

    there are 3 egr valves listed at Rock Auto. They all look alike. Any idea which one is right? DELPHI EG10080 OE No 17085765, 17085767 DELPHI EG10081 OE No 17085768, 17085769 DELPHI EG10079 OE No 17085764 never mind, I figured it out
  20. bedwards

    Quadrajet secondaries

    Well.. I didn't have good luck. Adjusting the screw 1/8 turn clockwise just moved the flat spot higher in rpm seems like so I moved it in the opposite direction which just lowered rpm of the flat spot. Now that a cold front has gone through, it seems to be running much worse. It is surging at...
  21. bedwards

    Quadrajet secondaries

    The truck is bone stock, headers and all. I did not check the heat riser valved but last oil change it was loose. Do have a Magnaflow muffler and no cat. Will try the adjustment and see what happens.
  22. bedwards

    Quadrajet secondaries

    ok, they are cracking open less than a 1/8 in maybe. So which way do I turn the screw to tighten them? 1/4 turn Clockwise? The truck has always run rich and left some carbon on the plugs, well... they are burned clean now as though its very lean.
  23. bedwards

    Quadrajet secondaries

    Yes, it does it on both tanks. The advance is working....but I don't know if its working right. Will check that next. thanks for all your ideas
  24. bedwards

    Quadrajet secondaries

    update, the hoses are good, the fuel filter is brand new, the fuel pump pumped a quart in 30 seconds, I put a new coil in it because the old original just barely failed the bench test. I loosened and retorqued the air horn. The secondaries are under tension. They are cracking open revving the...
  25. bedwards

    Quadrajet secondaries

    Bone stock '85 c10 305. I bought it 3 years ago with 19000 original miles. I rebuilt the carb then. It has 40000 on it now. The plugs are almost new, the cap and rotor were replaced last year. I run no ethanol in it. The truck has run very well all this time. I had one issue with the tank...

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