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  1. #1

    Default Failed exhaust hose

    My Crusiers with twin 351 engines had a exhaust hose fail on the starboard engine .The interior of the hose had collapsed I heard the hose pop and shut the engine down . The water temp was normal when it happened. Putted back to marina on the port engine. Prior to replacing the hose I checked the oil level and it was normal.Replaced the hose and attempted to start the engine but had trouble getting it to turn over. Had to jump the batteries together to get it started. The engine ran fine and idled normal. I shut it down and rechecked the oil level and found water in the oil. I plan on draining the oil and changing the filter next week. Any ideas on what to do if I find water again? Again the engine water temp was normal when the hose popped .

  2. #2
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,145

    Default Re: Failed exhaust hose

    Ayuh,.... Which hose, where, popped,..??
    Any Grease is Better,... Than No grease at All....

  3. #3

    Default Re: Failed exhaust hose

    Sorry,guess I didn't provide enough information.The 3 inch hose from left head. It opened up just past the clamp at the manifold. When removed the hose inner wall was collapsed restriction the water flow.
    Last edited by essikr; 07-01-2017 at 09:13 AM.

  4. #4
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,765

    Default Re: Failed exhaust hose

    You really wanna get the water out of the crankcase as soon as possible.....

    When was the last time the elbows were changed? ditto for impeller replacements, in the raw water pumps?

  5. #5
    Join Date
    Jun 2008
    Location
    Island Heights, NJ,
    Posts
    2,571

    Default Re: Failed exhaust hose

    If they're good hoses they should last a long time... Did this engine ever experience an issue where it ran without any ( or low) raw water flow? Hose life is about nil if there isn't a lot (typically on the order of 20 gal per min @ cruise speed per elbow) of cooling water mixed into the exhaust stream.
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

  6. #6

    Default Re: Failed exhaust hose

    THE impeller on that engine was replaced earlier in the season. The temp started to increase ,ran back to dock before changing it . So that would explain the early hose failure. The boat is more than two hours from home, trips to it are limited. Is there an explanation for the water other than a serious problem.
    I am ordering a new hose for the other side thinking it to may be bad or will soon. I didn't take it off the manifold to check.

  7. #7
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,765

    Default Re: Failed exhaust hose

    When were the elbows changed last?

    Its possible the elbows have 'clogged up' and that caused the hose failure and could be a contributor to the water in the oil as well.....without all the history, the other members here can only speculate......

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