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  1. Y

    Intake plenum gaskets

    Not using that mechanic, already tried another, think I have to fix it myself.
  2. Y

    Intake plenum gaskets

    I am a little worried about taking the top off without removing the carburetor from the engine, afraid I might drop a screw into the motor. Any suggestions? I'd rather not take it off but I will if it seems smarter to do it that way. I haven't ever done any carburetor repair, so I'm new to this.
  3. Y

    Intake plenum gaskets

    Is my math wrong? I get just a little less than 17 gal/hr., is that still enough? Seems like it to me but I'm no expert.
  4. Y

    Intake plenum gaskets

    Ok thank you, is there an instruction sheet or video that would help me with this?
  5. Y

    Intake plenum gaskets

    Is this the stuff I need? https://quadrajetpower.com/accelerator-pump-assembly-with-air-horn-gasket/ I am a little worried that not getting enough fuel might be a blockage in the lines or in the electrical part that switches the tanks. When I first started trying to figure this out, I tried to...
  6. Y

    Intake plenum gaskets

    I tried it both with the engine running and not running, as far as I can see there is none coming out of the nozzles, when I work the accelerator. Picture to see if I was looking in the right place, I'm not very up on carburetors. Also not good at drawing with the computer ;)
  7. Y

    Intake plenum gaskets

    Me either, would they help with cold starting? Yes I did replace the fuel filter.
  8. Y

    Intake plenum gaskets

    I had the carb gone through twice a couple of years ago, the second guy I thought knew what he was doing, the truck was running fine and starts right up warm but took 80 pumps (no exaggeration) or hand priming to start it cold. This guy wants to replace the carburetor to intake manifold gasket...
  9. Y

    Intake plenum gaskets

    Yeah I am wondering about that too, having trouble finding someone to work on it.
  10. Y

    Intake plenum gaskets

    Sorry, I wasn't trying to short cut it was a mistake.
  11. Y

    Intake plenum gaskets

    3/4 ton with a 400 engine
  12. Y

    Intake plenum gaskets

    I figured it out, and he knows exactly what he's talking about. they are pretty hard to come by for some reason. I found where I can order them but won't ship till the end of June :( See for yourself. https://www.summitracing.com/parts/aju-00819600
  13. Y

    Intake plenum gaskets

    Not sure, the mechanic that is going to fix it for me said intake plenum gaskets, he can't find them locally so I'm trying to order online,my understanding is the plenum gaskets are different. The intake manifold gaskets are readily available so I think the plenum gaskets are different.
  14. Y

    Intake plenum gaskets

    I need to order intake plenum gaskets for my 79 k2 400, and I can't find them. Can anyone help? Is there another name for them?
  15. Y

    79 k20 400 running rough, can't figure it out.

    Bextreme 04 thanks to your suggestion I found a local guy who came out and checked it all out, air leaks is a lot of the problem, he's going to adjust valves and replace gaskets, he thinks that will fix it. I really feel like he knows what he's doing, which is a LOT more than I can say for...
  16. Y

    79 k20 400 running rough, can't figure it out.

    10 seconds of cranking got me 6 ounces, I don't know if it matters but I think it may need a battery, cranking seems a little slow on a full charge.
  17. Y

    79 k20 400 running rough, can't figure it out.

    The plugs are AC Delco 10 platinum 0.35 gap, from Rock auto for a 400 engine is what they have.
  18. Y

    79 k20 400 running rough, can't figure it out.

    I'm near Creswell, pretty far for you to come, thank you for being willing to help. I will do the test the way you said. I do have a pressure test gauge, for vacuum and fuel but I will do your method and let you know what happens. The outfit that rebuilt the carb adjusted it, it worked fine...
  19. Y

    79 k20 400 running rough, can't figure it out.

    I have an idea how to build a hose that I can do these tests with, but I don't know what to ask for. Do they make short ends that you can screw into the fuel pump and fuel filter housing to put a hose on them? If so what size do I ask for?
  20. Y

    79 k20 400 running rough, can't figure it out.

    Yes I replaced the filter and the fuel pump, lines to the tanks were replaced by a professional 2000-3000 miles ago, I have a fuel pressure gauge, where do i connect? Not sure how to test volume
  21. Y

    79 k20 400 running rough, can't figure it out.

    Okay I need to learn how to check the fuel pressure. I'll figure that out. When I take it out on the road, it is rough running at low speeds even on pretty flat ground, smooths out as I accelerate, at about 40-45mph it runs fine, not sure what you mean by more specific, it has a hard time on my...
  22. Y

    79 k20 400 running rough, can't figure it out.

    It wasn't running up to par so I started with plugs, cap, coil, rotor and ignition control module, but even though the cap and rotor needed replaced badly it didn't help. I got new plug wires and tried to run it and it fell on it's face, so I changed the fuel pump. I thought that fixed it but...
  23. Y

    Where to get quadrajet rebuilt?

    I have to prime it when it's cold. And now recently it started running rough, I tuned it up, didn't help much even though the distributor cap was shot. I had a guy look at it, he thinks it's the carb, wants to rebuild it but I've had local guys rebuild it twice before and it ran ok but still I...
  24. Y

    Where to get quadrajet rebuilt?

    Where is the best place to get my quadrajet re-built?I have had it done twice in the last several years and it's still not right
  25. Y

    Can someone identify this part?

    Thanks!

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