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Thread: Setting Timing on '84 HT4100 4.1L

  1. #1
    pkared is offline Awaiting Email Confirmation
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    Setting Timing on '84 HT4100 4.1L

    I have both an '84 eldo and seville, same color. I can't find the Timing indicator gage anywhere. It's really cramped in there around the pulleys but I've looked at night using the timing light on #1 cylinder. I can find the slot on the pulley and put some white paint in it, put I can't find anything to measure the timing against.
    Can anyone give me a general idea where the timing indicator gage is?


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  3. #2
    carnut is offline Cadillac Owners Master
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    Re: Setting Timing on '84 HT4100 4.1L

    Looking over the driver fender down at lower pulley you should see the plastic timing marker. If I recall they were plastic and can get brittle and fall off!

  4. #3
    pkared is offline Awaiting Email Confirmation
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    Re: Setting Timing on '84 HT4100 4.1L

    I'll look again in this area, but I'll bet that's it-it's on the ground somewhere. Can anyone look for another landmark on the engine for me to line-up to? Something else I can use as a guide for setting the timing without the factory guide?

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    carnut is offline Cadillac Owners Master
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    Re: Setting Timing on '84 HT4100 4.1L

    There is no other guide. Order the timing tag and do it correctly.

  6. #5
    pkared is offline Awaiting Email Confirmation
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    Re: Setting Timing on '84 HT4100 4.1L

    Had the water pump go and had to tear it down to the timing gears because the front cover pulled loose when I removed the Water pump. In the Install instructions it calls for installing a Timing Indicator Part Number 1623830 onto the water pump as you assemble it to the engine(4.1L) The dealership says it's discontinued but I'll look for it. At least I know where it mounts, I may be able to get it from a junk yard but it'll be hell getting it off. I think a lot of mechanics forget to put it back on because it's missing on my 84 eldorado also and it was there before(I set the timing on the car when I got it used) the timing chain went and I had a mechanic fix it. Maybe they are brittle and break when you remove them(Might be plastic)


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