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Thread: Doing a tune-up soon, anyone got any pointers?

  1. #1
    Senior Member
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    Doing a tune-up soon, anyone got any pointers?

    It's been awhile since I did a tuneup on my car. The last time was when I had the engine out many many many years ago. Anyone have any guides on the order of events, pro tips, anything like that? I'll be doing plugs, cap, rotor, wires, fuel filter.

  2. #2
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    Quote Originally Posted by dmcerik View Post
    It's been awhile since I did a tuneup on my car. The last time was when I had the engine out many many many years ago. Anyone have any guides on the order of events, pro tips, anything like that? I'll be doing plugs, cap, rotor, wires, fuel filter.
    There's a nice PDF on removing the Intake Manifold here:
    https://dmctalk.org/showthread.php?4...ntake-manifold

    -Nick

  3. #3
    Senior Member 82DMC12's Avatar
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    Have you had the intake manifold off before?

    If I am planning to remove the intake, I remove the entire fuel injection system as a unit. I remove the W-pipe from the intake, and then disconnect the main fuel feed and return from the back of the fuel distributor. Remove the allen screws that hold the CPR and CSV to their fixtures. Remove the pipe of pain. Disconnect the frequency valve from the pass valve cover. A couple other things and then remove the injectors from their bungs and just lift the entire thing straight out. Now remove a couple of grounds and you can take the intake off too.

    Good time for a valley clean up and you can easily work on the distributor. Get an intake gasket kit and chance the paper gaskets and all o-rings. Change the o-rings under the Y-pipe if it's been a few years. Pressure test cooling system before putting all back together.

    Bosch copper plugs ONLY. You can get a Bosch rotor for the distributor on Rock Auto.

    Replace the O2 sensor while you're at it.

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  4. #4
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    Excellent. Thank you both.

  5. #5
    Senior Member r00b's Avatar
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    If you like pain, you can do it without taking off the intake manifold.

  6. #6
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    A "full" tune-up also includes the O2 sensor, checking and if necessary adjusting the valves, and resetting the Lambda counter. It's also good to do a compression test and checking the A/F mixture with a dwell meter and resetting the mixture screw if needed. Test the battery and the coolant, change the oil and filter. Check the spray patterns of each injector. As for the rest of the car, a good undercarriage inspection and grease the front end.
    David Teitelbaum

  7. #7
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    Quote Originally Posted by dmcerik View Post
    Excellent. Thank you both.
    No problem!

    This guide also references the Fuel System Hose Diagram I created back in 2000!

    I have a copy of the diagram, but when I try to post it here, it's tiny.

    If you need a copy, send me a message and I can email it to you.

    Thanks.

    -Nick

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