Marinette Boat Forum

(yeah, you did do a quick course change :)) If you suspect vacuum as an issue would it be correct to wonder why it's a problem in one engine only and the other is fine? Yes. It is curious. I’m going to just run the hell out of it but yeah, circling back to ignition, no more stalling with the perfor...

The secondaries open, the electric choke opens normally and fully. I’m wondering if a 318 has enough vacuum to overcome the counter weights? The new carb is an edelbrock 1409 600cfm. This replaced the carter AFB, which was less CFM I believe.... and I successfully turned an ignition thread into a fu...

It’s a brand new 1409 on it with all new filters in between. No coughing, no sputtering... it just stops at 2800 and any other movement from there with the throttle does nothing at all. Out of gear it’s a different story. It goes all the way up to 4000 with no problem at all. Sounds good too! This i...

OK, I took the boat out for the first time with the new performance distributors DUI on both 318’s. They definitely run smooth, but the port engine seems to max out on rpm’s at 2800 at full throttle. I was hoping for an opinion on whether this is likely a timing issue, Or possibly a fuel flow issue....

I have the DUI setup. They say they are certified for marine use and they are ignition protected. I’ve had them on for a few months and they seem to have solved my issues. They are bigger and I had to remove the oil pressure “engine out alarm” sensor. I’ll have to find and elbow and add it back some...

I have the standard mechanical fuel pump supplying a 1409 carb. I’ve noticed that the starboard engine seems to take a bit of cranking before it will begin to turn over. I would say about 30 total seconds of cranking. Ignition system is brand new (electronic, high voltage). Once it lights up, it run...

I’m sure I’ll find a way to mess this up

Thank you!

Not my manifold in the picture, but this is the bold that broke. Only the top inch is gone.... not enough to bolt down the carb.

Hello, I sheared off a carb stud that looked like it had been over torqued a time or two before. I did this in the process of replacing my old Carter AFB with a 1409 on my 318. It’s hard to tell if the studs can be removed from the manifold, so I am looking for an opinion on whether that is possible...