Can't find exhaust leak Mercruiser 3.0

[Felix Smolensky]

Hi.Have exhaust leak(sounds like and have smell) and cant see from where its coming,looked around exhaust , cant see nothing, where to look? Please see video.
https://www.youtube.com/watch?v=LSnuoc8Vnkg

 

[sandkicker]

Leak very likely at the exhaust manifold to head juncture. Exhaust gas is fairly clear, won't be much to see. CAREFULLY feel for puffs of HOT! gas. If on topside easier to find, if on underside or sides of ports, more difficult to find.

 

[Felix Smolensky]

Leak very likely at the exhaust manifold to head juncture. Exhaust gas is fairly clear, won't be much to see. CAREFULLY feel for puffs of HOT! gas. If on topside easier to find, if on underside or sides of ports, more difficult to find.

Thx! Found the leak under manifold.

 

[Felix Smolensky]

removed manifold and saw that is not manifold, head gasket was blown.Before that, it was misfiring then you go more then 3800 rpm.What can be the problem?Before was trying to solve misfiring, new sparkplugs,distributor cap,rotor, spark wires was changed.

 

[bondo]

Before that, it was misfiring then you go more then 3800 rpm.What can be the problem?Before was trying to solve misfiring,

Ayuh,.... It's runnin' Lean, a lack of fuel, the spark plugs are white,...'

Ya detonated it to death,....

 

[Felix Smolensky]

Ayuh,.... It's runnin' Lean, a lack of fuel, the spark plugs are white,...'

Ya detonated it to death,....

The white its original color of the spark plugs.

 

[fastjeff]

With ethanol fuel, I've noticed that the plugs tend to run scary white, even though the jetting is okay.

Jeff

 

[Felix Smolensky]

First day was running greta, second time took it to the lake, same problem, misfiring after 3800 rpm.Change the carb?

 

[sandkicker]

No... ( Price one for giggles!) I'm wondering why head gasket blew... Did engine ever overheat???
Did you have the valves done while it was apart?

 

[Felix Smolensky]

Engine wasnt overheat, valves was checked, they good.Im thinking may be its hall sensor or something in ignition?