Fuel in my oil

Discussion in 'General Motoring' started by timeldorado, Feb 9, 2006.

  1. timeldorado

    timeldorado Guest

    I just recently got a crx given to me and their is some problems with it. My concern is I pulled the oil dip-stick and its over full level and it smells like fuel, any suggestions
     
    timeldorado, Feb 9, 2006
    #1
  2. timeldorado

    Steppenwolf Guest

    Raw fuel is being dumped in at least one cylinder, washing the protective
    oil film off of the piston rings, collecting in the crankcase, diluting the
    oil and causing great wear to the block/bearings/rings and any other point
    at which engine oil is acting as lubrication. Get this fixed *immediately*.
    Have a dead miss? maybe the plug in that cylinder isn't firing, so it might
    be a relatively simple cure. In any case, after repairs, a couple of oil
    changes to flush the contaminated oil out of all areas of the engine is in
    order. In any case, don't use the car until you have it diagnosed by a real
    mechanic or you might cost yourself an engine.
     
    Steppenwolf, Feb 9, 2006
    #2
  3. timeldorado

    Pablo Guest

    To raise the oil level is a LOT of fuel in the oil. It is unlikely that
    it is entering via a cylinder. I don't know what year you are talking
    about, but if it is older and the FP is mounted on the engine, look for
    a bad diaphram on the fuel pump. Could be entering there...
     
    Pablo, Feb 9, 2006
    #3
  4. timeldorado

    TeGGeR® Guest


    What year CRX? Does it have a carb?
     
    TeGGeR®, Feb 9, 2006
    #4
  5. That's my thought. If it isn't a bad fuel pump (as you describe) the engine
    should be running mighty badly to dump that much fuel past the rings.

    Once the problem is found and fixed an oil change is definitely in order.
    I've heard the argument that the oil will still work okay with a lot of fuel
    in it and the fuel will gradually burn off through the PCV valve but I don't
    see the point in letting it go.

    Mike
     
    Michael Pardee, Feb 10, 2006
    #5
  6. timeldorado

    Eric Guest

    That doesn't sound like a valid argument to me. The excess fuel will
    function as a solvent thinning the oil and reducing its lubrication
    effectiveness. If the original poster's car is carbureted, then it could be
    that the carburetor is flooding. This would be the first thing that I would
    check.

    Eric
     
    Eric, Feb 12, 2006
    #6
  7. Dunno - I've had float valves jam and flood the engine so it wouldn't run
    and still not reach the point where it was obvious in the oil. A bad
    engine-mounted fuel pump can add a steady stream of gasoline. If the engine
    has been running okay the fuel pump is the way to go.

    Mike
     
    Michael Pardee, Feb 12, 2006
    #7
  8. timeldorado

    Eric Guest

    Good points, I guess that both the fuel pump and the carburetor should be
    suspect. Thanks.

    Eric
     
    Eric, Feb 12, 2006
    #8
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