235 Valve Cover..Coolant around cover Screws?

Discussion in '1947-1954' started by mockoski, Oct 21, 2018.

  1. mockoski

    mockoski Member

    Jul 14, 2014
    Hello All,

    I have a 53 Chevy with a 235 Engine.. After 4 years in the autobody shop, I just got everything back up and running.

    Got the engine running pretty well, but noticed recently getting a watery/coolant substance coming up from the valve cover screws. Mainly from 3 of the 4 screws on the cover, and wonder why this might be.. Do these screws actually go down to the coolant chamber?

    Just not sure why I would see any coolant from these screws, so hoping you guys might have come across this before?

  2. coilover

    coilover Member

    Mar 30, 2005
    Plano US
    Got to be coming from the hose or T-stat housing or some place that goes into the coolant system. The valve cover screw holes are blind holes so nothing can come in from the bottom end. To prove this remove the screws and fill with coolant---nothing will come out. Set many valves with engine running and valve cover off and had no leaks.
  3. Bilbo

    Bilbo Member

    Jul 4, 2007
    Magnolia, Texas
    Any chance the engine set in rain while at body shop. Water maybe seeped in around threads and then weeped out when heated up? I'd maybe blow out the screw holes, replace screws with a dab of grease, and warm up the engine again?

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