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Thread: 76 eldo

  1. #1
    Join Date
    Mar 2013

    76 eldo

    i'm having trouble with my in-laws 76 caddy that sat in their barn for 25 years. i have done all the gaskets, filters, carb etc. but the motor stalls at 40-50 mph when warm and especially going uphill. i've been told that it could be the sock in the tank but am not sure about that. Any other ideas?

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  3. #2
    Roadmaster75's Avatar
    Roadmaster75 is offline Cadillac Owners Member
    Automobile(s): 1978 Eldorado Biarritz
    Join Date
    Feb 2012

    Re: 76 eldo

    Unless you dropped that 25 year old tank and cleaned it, and, replaced or effectively blew out and
    cleaned the fuel lines .... you are probably sucking up varnished gas/sediment right through your
    fuel pump into that nice new filter ... also, after 25 years of sitting, that Q-jet carb is gonna
    need a little help itself... dried up old varnished gas and all the stuff in there
    before it went to sleep are not helping you.

    I'd pull the new filter you put in at the carb and check it for blockage and, then, commit to dropping the tank
    and ensuring clean fuel delivery to the carb.
    my 2 cents

  4. #3
    DouglasJRizzo is offline Cadillac Owners Enthusiast
    Automobile(s): 1975 hearse, 1976 hearse
    Join Date
    Nov 2010
    Franklin Lakes, NJ

    Re: 76 eldo

    I think Roadmaster is right. There's probably 5 gallons of varnish, sludge, gravel (many filling stations didn't have the filters on the pumps) and assorted detritus in there. Most likely the sock is plugged solid too.


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