Hi guys,
I have recently done a bunch of work to my atomic 4 as it was not running when i tried to start it up this season. I have not owned the boat for very long and it has been a bit of a project. I have some smoke coming from the right side of the engine compartment once the engine is running for about 5 minutes. I initially thought it was an exhaust manifold leak so I replaced the manifold gasket and the flange gasket that leads to the pipe. I started it up again and the smoke came back one the engine warmed a bit. I honestly think I see it coming off of the heat exchange unit, it does not seem to be coming from the exhaust or the valve cover or further below. My best guess at the moment is that the exhaust manifold is heating up so much its causing some sort of burning on the heat exchange unit (maybe the paint?). It has never done this before but I have not really run the engine very long in the past. Maybe the exchanger has failed?
When the engine is at idle I am seeing only 100 degrees on the temp gauge. But if i shut off the engine after 5 minutes of running the temp spikes to 180 which might be normal im not sure. There is good water flow coming out of the exhaust
So some other things that I have done that im not sure would have any effect would be;
new 55 amp alternator
Took apart carb and cleaned it and new gaskets
removed old fuel put new fuel in
New fuel pump and inline primer
New fuel filter
engine re wire
Auto charging relay to charge house and starting
new raw and fresh water impellers
oil change
added 50/50 coolant when i did the manifold gasket
new coolant hose
The other thing I'm thinking might be an issue is the new larger alternator? After I installed it the engine seems to make a small clunk when the alternator kicks in. I'm pretty lost to why this smoking is happening?
Any insight would be greatly appreciated
Jon
Pearson 33
I have recently done a bunch of work to my atomic 4 as it was not running when i tried to start it up this season. I have not owned the boat for very long and it has been a bit of a project. I have some smoke coming from the right side of the engine compartment once the engine is running for about 5 minutes. I initially thought it was an exhaust manifold leak so I replaced the manifold gasket and the flange gasket that leads to the pipe. I started it up again and the smoke came back one the engine warmed a bit. I honestly think I see it coming off of the heat exchange unit, it does not seem to be coming from the exhaust or the valve cover or further below. My best guess at the moment is that the exhaust manifold is heating up so much its causing some sort of burning on the heat exchange unit (maybe the paint?). It has never done this before but I have not really run the engine very long in the past. Maybe the exchanger has failed?
When the engine is at idle I am seeing only 100 degrees on the temp gauge. But if i shut off the engine after 5 minutes of running the temp spikes to 180 which might be normal im not sure. There is good water flow coming out of the exhaust
So some other things that I have done that im not sure would have any effect would be;
new 55 amp alternator
Took apart carb and cleaned it and new gaskets
removed old fuel put new fuel in
New fuel pump and inline primer
New fuel filter
engine re wire
Auto charging relay to charge house and starting
new raw and fresh water impellers
oil change
added 50/50 coolant when i did the manifold gasket
new coolant hose
The other thing I'm thinking might be an issue is the new larger alternator? After I installed it the engine seems to make a small clunk when the alternator kicks in. I'm pretty lost to why this smoking is happening?
Any insight would be greatly appreciated
Jon
Pearson 33
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