Recent content by Jgran

  1. Jgran

    Starboard Riser Hot - 7.4L Mercruiser

    Hello, just replaced manifold to riser gaskets on boat I just acquired. Upon running up to temperature and checking for leaks on muffs the starboard riser was getting hot to the touch. Engine s/n is 0D810972. Pinching hoses it didn't seem that any water was going to the nipple at the forward...
  2. Jgran

    Leaking Riser Gasket - DIY Fail

    I recently purchased a 1992 Colbalt 222 with a 7.4L 454 and had it inspected by a local Mercruiser dealer. Everything checked out fine but it was noted that there was some seepage at the connections between the exhaust manifolds and the risers. The previous owner told me that he had installed...
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