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Thread: Proofing my work after fuel distribution re-assembly?

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  1. #1
    Senior Member
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    Proofing my work after fuel distribution re-assembly?

    Greetings-so I recently completed the replacement of a thermister. I did my best to tag my connections, and double check my work as I reassembled the intake/fuel distribution system, and thought I had it all right, but upon testing, I am not getting the engine to start. RIGHT at the first few cranks, it will sputter, sounding as though it is receiving a small amount of fuel, but it never takes, and after the first 2 seconds, the engine just cranks and doesn't start.

    I read the entire fuel section of the manual(section D), and while I understand better the general "workflow" of the fuel system, it didn't give me much to proof my work. The few electrical connections(idle speed motor harness, etc) it details never got disconnected, or are obviously seated properly. I have a suspicion I missed a fuel hose or electrical harness somewhere. Is there a diagram anywhere that I could use to confirm I have all my fuel lines and electrical harnesses seated in the right position? (as an aside, I believe I have a fuel pressure gauge that fits this car, so should I throw that on between the CPR and the fuel distributor and see what i see?)

    thanks for any advice!

  2. #2
    Administrator Ron's Avatar
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  3. #3
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    See if a shot of Ether gets it to run at all. That will tell you if your problem is ignition or fuel.
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  4. #4
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    Thanks Ron-I'll trace tomorrow and make sure it looks right.

    Shot of ether-never done this before. can you elaborate?

  5. #5
    Senior Member Rich's Avatar
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    Quote Originally Posted by rjd2 View Post
    Thanks Ron-I'll trace tomorrow and make sure it looks right.

    Shot of ether-never done this before. can you elaborate?
    Ether is what's in starting fluid. Any auto parts store will have it.

    LINK: Starting Fluid

    1 can is plenty. Follow the instructions on the can.

    If an engine starts with starting fluid but not without it then there's a fuel delivery problem. If it won't start with starting fluid then look into the ignition system.
    March '81, 5-speed, black interior

  6. #6
    Administrator Ron's Avatar
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    Since it ran before this work and it sounds like it is getting spark (at least at first), I'd wild guess it is the CPR/WUR fuel line with the small banjo bolt that is supposed to go to the passenger side of the fuel distributor, but doesn't.

    =====

    I'd check that the air metering plate offers resistance when it is pushed down, after hearing the pump run. If it doesn't, it's fuel. If it does, press it all of the way down and release it immediately and then see if it acts the same when you try to start it.

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