Water in the intake

[Erico624]

Did you check the Heads for Warpage, and Resurface if necessary?

The entire Gasket is not Rubber/neoprene/Silicone, it is usually Plastic, with Rubber/neoprene/Silicone Rings around any Ports.
If the Block-Heads were machined, then Holes in the Gasket may no longer match the Ports on the Intake.

An Acquaintance acquired a Boat and Motor, as part of a Trade. "Runs Great!", he was told. He was convinced he needed Head Gaskets, even after I took this Pic. Actually he did need new Gaskets, as well as a new Block and Heads
Since you have the motor out of the Boat, I agree with Scott, that it has to come apart for a very thorough Inspection.

So if nothing found would need to buy the whole gasket kit again?

 

[Bondo]

Was a freshwater engine from a 2000 mastercraft with low miles.

put the engine together. Build from block up. Honed piston chamber’s. Measure got right sized rings. Replaced all gaskets.

Ayuh,..... Were the heads, 'n block magnafluxed to look for cracks,..??

 

[Erico624]

Ayuh,..... Were the heads, 'n block magnafluxed to look for cracks,..??

What does that mean?

 

[Erico624]

What does that mean?

Ayuh,..... Were the heads, 'n block magnafluxed to look for cracks,..??

nvm i googled it. Magnetic check of the block. I stripped the block down to nothing didn't see any cracks rust. Looked pretty solid. Its a 880 block stamp. Marine Heads best ones where solid i looked them over before rebuild no cracks.

 

[Bondo]

nvm i googled it. Magnetic check of the block. I stripped the block down to nothing didn't see any cracks rust. Looked pretty solid. Its a 880 block stamp. Marine Heads best ones where solid i looked them over before rebuild no cracks.

Ayuh,..... I've seen cracks that only showed after magnafluxing, but hopefully, you got lucky,.....

 

[jimmbo]

So if nothing found would need to buy the whole gasket kit again?

If nothing found, I would be suggesting you look again. Something is not Kosher.

 

[Lou C]

I heard a very noticeable miss while it was running in addition to the wobbly coupler

 

[Erico624]

I heard a very noticeable miss while it was running in addition to the wobbly coupler

Did a leak down test number 1 tdc and hear air from exhaust

 

[Erico624]

I heard a very noticeable miss while it was running in addition to the wobbly coupler

Also if you look at the picture. I think i have the wrong intake gasket also.

 

[jimmbo]

The Gaskets appear suspect. How many Bolts did you remove from the Intake, when you pulled it?

 

[Scott Danforth]

gasket looks fine. looks like vortec intake gasket.

the heat exchanger is only a half system, so the manifolds would only last a few years in salt water.

post a pic of the manifold to riser joint.

 

[Erico624]

gasket looks fine. looks like vortec intake gasket.

the heat exchanger is only a half system, so the manifolds would only last a few years in salt water.

post a pic of the manifold to riser joint.

ok

 

[Erico624]

gasket looks fine. looks like vortec intake gasket.

the heat exchanger is only a half system, so the manifolds would only last a few years in salt water.

post a pic of the manifold to riser joint.

 

[Erico624]

The Gaskets appear suspect. How many Bolts did you remove from the Intake, when you pulled it?

8

 

[Erico624]

You gotta replace the Coupler, it is really wobbling badly
What kind of Machining was done to the Heads/Block?
Who put the Engine together?

I just put the coupler on. Its from the old boat. getting a new one.

 

[Lou C]

Your Vortec gaskets look fine but I am wondering if you have rust or pitting on the sealing surfaces of the cyl heads and the intake. Any pix of those?
I had to spend a lot of time cleaning up the sealing surfaces of my old intake. Actually bought a spare one because mine has been used in salt water 20 years. I'm going to check the old one when I winterize the boat, if there is any doubt about its condition I will change it now.

 

[Scott Danforth]

pull the elbow. look at the joint faces. not the outside of it.

you are in troubleshooting mode. you have about a day to clean that water out of the motor and either have the motor running, or need to flush all the surfaces with alcohol then oil until you get it running.

 

[Erico624]

pull the elbow. look at the joint faces. not the outside of it.

you are in troubleshooting mode. you have about a day to clean that water out of the motor and either have the motor running, or need to flush all the surfaces with alcohol then oil until you get it running.

What do you mean by joint faces?

 

[Erico624]

pull the elbow. look at the joint faces. not the outside of it.

you are in troubleshooting mode. you have about a day to clean that water out of the motor and either have the motor running, or need to flush all the surfaces with alcohol then oil until you get it running.

 

[Scott Danforth]

Is that epoxy covering a crack in the 3rd picture?