~~I need help working on my boat. I have a 2001 Glastron SX175 with a brand new Volvo 3.0L 4 cylinder, 140HP inboard/outboard. I replaced the motor last year and it broke-in fine. After I changed the oil after the 20 hour break-in I started to notice some problems. It had a hard time starting (horrible, screeching sound, hydro-lock?), and had milky oil. I changed the oil and ran it, milky oil again. I did a compression test: 1,2 & 3 cylinders were fine, water shooting out of the #4 back cylinder. I drained the oil, took out the spark plugs and squirted some oil into the cylinders (hopefully preventing any rust) and shut it down for winter. Now I want to figure out what's wrong.
A couple clues: 1. My brother and I put the motor in. He is a car mechanic and helped me with most of it. I don't know much about motors, just enough to make me dangerous but I'm handy. I bought the motor and manifold new from Michigan Motorz and had to switch the riser, water pump, alternator, carb & electrical from the old motor.
2. When I installed the restrictor plate for the riser, I installed it "this side up" as it is stamped on the plate. After doing research I found that Volvo actually had it wrong and "this side up" was supposed to be down.
3. One time when I was out on Lake Michigan I let a friend drive and he "punched it" accelerating way to fast for all of the weight that was in the back. The bow of the boat came way up before I told him to throttle down. I believe that the potential was there for water to come back up through the riser (and into #4 cylinder).
4. I don't think it's cracked block. I replaced the motor because the previous one had a crack in the block between the #2 & 3 cylinders. This made me keep my eyes glued to the temp sensor on the new motor and I never saw it even get a little bit over normal temp.
5. Something else?
What do you think? Thanks for reading, have a great day! Rob
A couple clues: 1. My brother and I put the motor in. He is a car mechanic and helped me with most of it. I don't know much about motors, just enough to make me dangerous but I'm handy. I bought the motor and manifold new from Michigan Motorz and had to switch the riser, water pump, alternator, carb & electrical from the old motor.
2. When I installed the restrictor plate for the riser, I installed it "this side up" as it is stamped on the plate. After doing research I found that Volvo actually had it wrong and "this side up" was supposed to be down.
3. One time when I was out on Lake Michigan I let a friend drive and he "punched it" accelerating way to fast for all of the weight that was in the back. The bow of the boat came way up before I told him to throttle down. I believe that the potential was there for water to come back up through the riser (and into #4 cylinder).
4. I don't think it's cracked block. I replaced the motor because the previous one had a crack in the block between the #2 & 3 cylinders. This made me keep my eyes glued to the temp sensor on the new motor and I never saw it even get a little bit over normal temp.
5. Something else?
What do you think? Thanks for reading, have a great day! Rob