Right side manifold overheating

Bellacoolakid

Recruit
Joined
Mar 1, 2015
Messages
1
Last summer I was cruising on both engines and smelled something burning. Opened engine hatch and right side exhaust manifold on one engine was smoking hot. Left side cool and engine temperature normal. Volvo 280 leg 350 chev engine. Any suggestions as to what would cause this?
 

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
30,454
Clogged up riser on that side or clogged up thermostat housing.

First thing I would do is run on muffs and pull the hose going to that manifold and see what kind of water flow you have. Then pull the hose on the other manifold and compare.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,924
1st check the impeller(how old?) and then go from there.
You say 280 so I'm guessing mid 80's ???
The riser/ manifolds how old? Salt water? Hours?
Remove the hose and check the end of the riser for clogs or blockage.
 
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