Recent content by osubob

I had the same issue in my 1997 330, but I have carb 7.4, not MPI. It ended up being the Thunderbolt Ignition system. Had the module replaced and the RPM's stayed solid all the way to WOT. I found this after replacing all other electrical components (Spark Plugs, Wires, Cap, Rotor, and Coil)...

I have had the same issue. It most likely is the neutral safety switch. I have to shake the shifters a little bit when starting.

Update 2... Checked on the boat this morning and the carpet was 95% dry. The servpro guys really know their stuff! I decided to have another survey done after it is considered dry and be sure that there are no long term effects to worry about (ie stringers). The good news is that there was...

Update... I had Servpro come out do a professional extraction and have air movers and dehumidifiers going. They feel confident that they will be able to get all the moisture out. I've was able to create a work-around for the transducer and wired in place so that it can no longer back out...

I have a 1997 330 sundancer. I was out in the boat today and found the boat taking on a large amount of water. Come to find out, the speed sensor for my ray marine system was installed without the threaded cap that is supposed to keep the sensor in place. The cabin flooded and ended up...

I'm in Lake Michigan. We boat out of Grand Haven. Thanks for the great news everyone. Just what I wanted to hear. Sent from my iPhone using Tapatalk

Before the boat was put in the water for the 2013 season, I had the bottom of my boat sand blasted, Epoxy painted, and applied 3 layers of Pettit Hydorcoat. We did a lot of boating last season. I'm just curious how long the paint lasts on the bottom. Do I need to paint the smile this year, or...

Is your generator still available?

If your Open throttle is 4750, than cruise at 85% is about 4035. Not too far off from your 4100. Is say you are a little on the high side, but not too bad. Merc says not to exceed 85% max for cruise speed to prolong engine life.

Seems way too fast to me, but I'm running 7.4L blue water inboards with V-drives. My wide open RPM is 4200. What is your WOT RPM. I would think that you would be really using up the fuel at that RPM.

No. Best way is to swap them between the engines and see if the problem follows. I ended up replacing it since I had an old ICM on one engine and a newer one on the other. They could not be swapped. I replaced it and it did the trick. Runs like a top now.

It is an antenna wire. I replaced my stereo this winter and used the same one to connect to the antenna input of the deck.

I troubleshooted the exact same thing. It ended up being the Ignition Control Module. I found this out after replacing Plugs, Wires, Cap, Rotor, Pickup, coil, and Knock Sensor. Bob

I had this same issue. The engine would studder at cruising speed. It ended up being the ignition module. I figured this out after completely replacing the entire chain of electrical components. I agree with the previous poster. Swap the modules between the two engines to rule it out. Bob...

All, I have an update to my issue. I learned that the thunderbolt ignition system had been changed on the port engine. I was not able to swap between port and starboard because the updated one had different connections. The mechanic and I were able to narrow down the studdering issue down to...