Search results

  1. S

    2010 25 toh 4-stroke head gasket help

    after some research I found comp is supposed to be 164. I had 120ish on all three then i sprayed in some oil and got 150-160 on all three. Im thinking I got stuck rings, Plan is to add seafoam to fuel and soak top end with intake spray cleaner and then run it hard for a bit to see if there is...
  2. S

    2010 25 toh 4-stroke head gasket help

    Did my comp checks again and cold they are 120 on all three cyl. After running for 15 min on the muffs they are 190,120 and 150. What can cause comp to go up? maybe sticking/carboned up exhaust valve? the plugs all look good and the motor sounded fine while running on the muffs. The dipstick...
  3. S

    2010 25 toh 4-stroke head gasket help

    This is a fresh water engine on a pontoon that mostly goes low speed and sees maybe 50 hrs use a season. perhaps there is a ring seating issue but would that cause oil level increase and foam in oil?
  4. S

    2010 25 toh 4-stroke head gasket help

    When I put the boat in service this year the oil was overfull and came out the dipstick hole, this had happened before 4ish years ago when I first got it and I thought the original owner had overfilled. I changed the oil and it has slightly increased as for the few hours Ive run it since but it...
  5. S

    2010 25 toh 4-stroke head gasket help

    anyone have a link to the maint manual for a 2010 mfs 25b or could you pm me the head gasket procedure? Ive been having issues with my oil level and some gray foam on the dipstick as well as an intermittent giant miss and rough running that comes and goes. Did a comp check and got 180, 120 and a...
Top