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Port Engine Overheating
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Port Engine Overheating
Bought my first boat!!! Very excited and want to learn to do my own repairs, if at all possible. Have a 1997 350 Mariner with a 2 Crusader 350 XL engines. Starboard engine temp is perfect and port engine overheats when over 2200. Had a mechanic come in fill coolant check hoses and replaced both engine's impellers thinking that would do the trick. It's a little better but still overheats and white smoke emits from port engine. I'm thinking of trying Sea Flush with Barnacle buster or Salt Away on my own as a next troubleshooting step and last resort replacing the riser(s). Those are big bucks come to find out. I've been watching you tube videos on this process. Anyone have a link or tips for flushing all the crap that may be in the engine making it overheat? Do I need to remove the impellers when doing this chemical flush? Before I purchased the boat it had sat for a long while...
Many thanks
Rick
- mjk1040
- Admiral
- Posts: 1506
- Joined: July 30th, 2015, 8:15 am
- Vessel Info: 1998 355 AC/MY "Deja Vu"
- Location: Savannah, NY
- Has thanked: 9 times
- Been thanked: 236 times
Re: Port Engine Overheating
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
- SanJuanDreamer
- First Mate
- Posts: 170
- Joined: April 4th, 2016, 4:02 pm
- Vessel Info: Still Searching
- Location: Seattle
- Has thanked: 1 time
- Been thanked: 21 times
Re: Port Engine Overheating
Also, rod out the Heat Exchanger and replace the U-cooler.
You didn't post much info about your motors so I'm going with what I did on my Mariner.
- bud37
- Admiral
- Posts: 4676
- Joined: April 23rd, 2015, 10:22 pm
- Has thanked: 547 times
- Been thanked: 1142 times
Re: Port Engine Overheating
edit , spellcheck correction....
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Re: Port Engine Overheating
RickieT wrote:Source of the post Greetings,
Bought my first boat!!! Very excited and want to learn to do my own repairs, if at all possible. Have a 1997 350 Mariner with a 2 Crusader 350 XL engines. Starboard engine temp is perfect and port engine overheats when over 2200. Had a mechanic come in fill coolant check hoses and replaced both engine's impellers thinking that would do the trick. It's a little better but still overheats and white smoke emits from port engine. I'm thinking of trying Sea Flush with Barnacle buster or Salt Away on my own as a next troubleshooting step and last resort replacing the riser(s). Those are big bucks come to find out. I've been watching you tube videos on this process. Anyone have a link or tips for flushing all the crap that may be in the engine making it overheat? Do I need to remove the impellers when doing this chemical flush? Before I purchased the boat it had sat for a long while...
Many thanks
Rick
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Re: Port Engine Overheating
RickieT wrote:Source of the post Greetings,
Bought my first boat!!! Very excited and want to learn to do my own repairs, if at all possible. Have a 1997 350 Mariner with a 2 Crusader 350 XL engines. Starboard engine temp is perfect and port engine overheats when over 2200. Had a mechanic come in fill coolant check hoses and replaced both engine's impellers thinking that would do the trick. It's a little better but still overheats and white smoke emits from port engine. I'm thinking of trying Sea Flush with Barnacle buster or Salt Away on my own as a next troubleshooting step and last resort replacing the riser(s). Those are big bucks come to find out. I've been watching you tube videos on this process. Anyone have a link or tips for flushing all the crap that may be in the engine making it overheat? Do I need to remove the impellers when doing this chemical flush? Before I purchased the boat it had sat for a long while...
Many thanks
Rick
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Re: Port Engine Overheating
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Re: Port Engine Overheating
mjk1040 wrote:Source of the post OK Rick; I assume u have closed cooling by ur narrative. White smoke suggest u are burning the antifreeze. Head or intake gasket is bad. A cooler is bad and letting anti freeze into the exhaust via the raw water system. Does ur antifreeze level drop over time? Now ur in salt water I take it and replacing exhaust manifolds is common about every 5 years or so. How long did it sit on the dry? Can u post a pic of the smoke sometime? The Barnacle buster etc. can just be put in a pail and sucked in with the fresh water pumps. Let it stand in the engine for a good period of time, then just fire it up to flush out the junk. But as I said true white smoke indicates ur burning antifreeze. Keep us posted.
The boat just wasn't used a lot...it wasn't out of the water at all for a long period of time.
- throwback2
- First Mate
- Posts: 119
- Joined: January 13th, 2014, 10:38 am
- Vessel Info: 1987 Carver 28 Voyager,twin small blocks,1991 Shamrock,350 Chevy now.
1973 Atlantic Craft 15, 2004 2 smoke Merc 40,
and a few other water toys - Has thanked: 5 times
- Been thanked: 22 times
Re: Port Engine Overheating
- RickieT
- Deck Hand
- Posts: 52
- Joined: June 17th, 2017, 5:33 pm
- Vessel Info: Carver 350 Mariner 1997
- Location: Sausalito, CA
- Has thanked: 18 times
- Been thanked: 3 times
- Contact:
Re: Port Engine Overheating
mjk1040 wrote:Source of the post OK Rick; I assume u have closed cooling by ur narrative. White smoke suggest u are burning the antifreeze. Head or intake gasket is bad. A cooler is bad and letting anti freeze into the exhaust via the raw water system. Does ur antifreeze level drop over time? Now ur in salt water I take it and replacing exhaust manifolds is common about every 5 years or so. How long did it sit on the dry? Can u post a pic of the smoke sometime? The Barnacle buster etc. can just be put in a pail and sucked in with the fresh water pumps. Let it stand in the engine for a good period of time, then just fire it up to flush out the junk. But as I said true white smoke indicates ur burning antifreeze. Keep us posted.
I think this is steam...I posted a youtube video of it and my gauges at the time it was overheating...it is in salt water...San Francisco Bay
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