Marinette Boat Forum

I removed the spark plugs for cylinders 2/4/6/8. 2 and 4 show some fuel fouling. 6 and 8 look normal with light brown coloring of insulator. I will replace the plugs and check the automatic choke assembly to see if that is causing the fuel fouling. Any other suggestions?

Further inspection of the ...

Well guys I took off inboard manifold and riser with no difficulty at all! Everthing looks OK with no signs of rusting or water leakage. I am really amazed at the apparently good condition of the manifold and risers, but then how would I know if the walls are thick or thin within? Any thoughts on ...

Thanks Joel and Jeff! It sounds like this is a job you have faced before. The manifolds and the risers are original and are now 27 years old. The engines have never been stressed and have operated mostly under 1500 RPM on the Erie Canal for two to three months of each year. Perhaps that is why the ...

Like many LM318 owners I want to make sure that I do not ruin my engines by allowing raw water engine cooling water from entering my engines through leaks in the exhaust manifolds or risers thereby causing rust or, worse yet, causing hydrolock. I know I should look for signs of leakage around the ...