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Thread: TB42 Tappet Adjustment

  1. #51
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    Quote Originally Posted by fukitol72 View Post
    tapping noise to go away
    If they're like mine adjusting them probably wont be enough. I thought they were fine until I compared them with a freshly ground one. They have a fairly definite point (like a cam) where they push on the valves, but they're meant to be evenly rounded.
    1989 GQ LWB Wagon, TB42 Petrol/LPG Auto. Bought Dec 2010

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  3. #52
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    Hi everyone,
    Is this the same settings for the 97 2.8L turbo diesel?

    Whats involved in removing the rocker cover with the vacuum pump i couldn't find the workshop manual?

    I think its a lifer noise I,m hearing, but I,m also thinking it maybe a injector they can sound the same, she has only done 235,000 km i will check it out tomorrow to see if it the lifter or injector with the old screwdriver.

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    03 nissan patrol 4.8

    Quote Originally Posted by patch697 View Post
    This is a widely ask question by many DIYers so I've set it out in point form so whom ever needs it may copy & print it out


    TB42 Tappet adjustment.

    Adjusting Intake and Exhaust Valve Clearance
    Adjustment should be made while engine is warm but not running

    1. Set No. 1 cylinder at top dead centre on its compression stroke,(with timing marks aligned remove distributor cap the rotor button should be pointing at number 1 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 1,2,3,6,7,10

    2. Set No. 6 cylinder at top dead centre on its compression stroke, (with timing marks aligned remove distributor cap the rotor button should be pointing at number 6 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 4,5,8,9,11,12

    Valve clearance
    Intake 1,3,5,7,9,11 - 0.38mm (0.015 in)
    Exhaust 2,4,6,8,10,12 - 0.38mm (0.015 in)

    Adjusting screw lock nuts - 16 - 22 Nm (1.6 - 2.2 kg/m, 12 - 16 ft/lb)

    If you are running duel fuel it is a good idea to set your tappets 1 to 2 thou bigger in gap as LPG has a tendency to close up the gap.

    Although this is a widely used practice its not an absolute necessity.

    Cheers
    Paul
    i have a 03 nissan patrol 4.8 is this for that to

  5. #54
    Patrol God threedogs's Avatar
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    Quote Originally Posted by thefuzzywuzzys View Post
    i have a 03 nissan patrol 4.8 is this for that to
    Hello mate and welcome to the forum, might be better for you to post an intro before
    asking any questions ,,polite and all,, Its just something the Forum asks of us all.
    No harm done but you'll find you'll get a better response as well,,,,,,lol
    04 ST 3lt auto, not enough Mods to keep me happy, but getting there

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    I remember doing the Holden red motors, engine running, back off the rocker till it rattled, then close up till silent. Do all 12 and shut it down. The tighten them all 3/4 of a turn. Tappet cover back on and start up, once the lifters equalised, that was it.

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