Join Date: Jul 2000
Thanked 331 Times in 315 Posts
Rep Power: 21
Re: Blown head gasket?
Scottgrewe offers good advice. The first check should be for a leaking raw water pump that has blown its inner seal and now the raw water is partially flooding into the bottom of the engine. Smply remove the pump, fill it and the connection tubes with water and pressurize to look for water leaking past the inner shaft seal. To better visualize get a copy of the appropriate pages of your maintenance and repair manual. If you DIY repair the pump, be sure to fit-up all the seals exactly to specs. and listed 'clearances' - be accurate.
2. Either get a mechanic with ... or you purchase ... a handpump pressure tester of the non-raw water side of the cooling system ... this will connect to the radiator cap. Pump up to 13 psig ... search for the leak: remove the injectors and with a borescope inspect the combustion chambers for water. Then go into the cast block (water pump 'hole', etc. and look for leakage from a crack in the casting, etc.
Check the raw water pump first - its a very common cause of milky looking oil.
FWIW .... there isnt much in the way of reliable mechanical help along the ICW between Coinjock and Morehead City (Jarrett Yard a few miles north of Morehead).
Good luck to ya.