96RinkerCaptiva212
Petty Officer 3rd Class
- Joined
- Jun 4, 2017
- Messages
- 84
Hey guys - I've been reading around the forum for a lot of good info recently but now I'm forced to sign up and post for help unfortunately! My wife and I bought the 96 Rinker Captiva last July from a lifelong family friend. He had not ran it in 3 years himself but owned it for about 6. The owner before that we also know and definitely a guy that takes care of his stuff. Anyway, good to know the full history of the boat and know the people were all good people and somewhat gear heads. My first boat also!
So, we picked this boat up last July with 310 hours on it. Ran amazing all last summer. I winterized the boat and have went out this season on 3 great trips/cruises. I actually don't run the boat a whole lot. We are on a mooring buoy and we go out for like a 10 minute cruise at 3500ish and then just go to a cove and hang out for a few hours. I can't fully speak to it's last life but with me, it's fairly easy I would say.
So, on the 4th trip this year, I had 7 people with and right off the bat, it felt like it was missing some power. I cruised 3500 for about 3 or 4 mins and thought I heard a slight click pop.. kind of backed it down, nothing, started cruising at 3500 again and heard a few more clicks/pops. At that point, I realized I was losing power and started to shove the throttle foward some more and hit max throttle and noticed the motor was giving nothing more. So, I shut it down quickly. Boat died. Popped the lid and saw little smoke. Started it back up and had some smoke spilling which seemed to stop. I eased it out of the main body and over to a cove and noticed the water temp was erratic. I let it sit for a good hour checking things over. Oil looked okay on dipstick. Took 20 sec of cranking and it finally started but sounded like absolute crap. Popping sound. Had my buddy tow me back to the buoy.
Everyone said it was the fuel filter letting water through. So I changed that and put some as in the carb to ease the start. Well it was a hard start and finally fired and sounded absolutely terrible again. Plugs all were in tact. Found #5 to be completely dead, no compression reading. Compression is as follows:
Driver Bank (this side never made a noise)
2 - 90 (worn valve)
4- 110
6- 110
8- 110
Passenger Bank (this is where the popping noise came from)
1 - 150 (water?)
3 - 110
5 - dead to the world
7 - 150 (water?)
So, first STUPID question - this boat is stranded on my buoy obviously. Today, I checked oil and it is MILKY, ugh.... I pulled the passenger exhaust riser and manifold. It just hit me, are these flappers in the hull pipe? I only pulled the riser and rubber coupler. I'm not at risk for sinking the boat by allowing water to come through the exhaust am I?? I was out there for 2 hours and never seen anything.
Ok, so exhaust riser, manifold and valve cover off on passenger side so I can get to this dead cylinder. Rockers and springs looked fine. So, I guess next I need to get the intake and carb off (I see they can be pulled at the same time). Kind of looks like the power steering may need to come loose as it looks bolted to the head. Anything else major that I'm about to run into? I will loosen the rocker and get the rods out and mark them. I think thats about it.
Oh, I need to mark the disty as is? Do I need to get #1 to TDC and THEN mark the disty?
The main issue is just dealing with some light wakes while I'm doing this as boats bust open the main body of water. Making for some decent motion sickness, which I've dealt with my entire life lol.
Finally, I really don't know what actually caused this. Maybe it was the fuel filter like people are saying. I poured out the contents and there was major debri and a brown alternate separate fluid which I'm assuming is water. The more I read on here, sounds like a bad exhaust riser/gasket/flapper failed on me is a more common failure. Boat is 21 years old now and no one has had to do any real maintenance to it so I guess it was about due..
I'll let you guys know what I run into when I get the head off. Hoping it is a severe head gasket blow. If I find a detonated piston, guess I will need to get towed to the ramp so I can take it to the shop to get a new block installed. The driver #2 cylinder being a little low at 90 psi is also bothersome. Maybe a valve is burned. I've never done any internal work before to an engine. I'm a overhead cam guy and have done motor swapping, rear ends, some manually tranny work, superchargers... But this is a first for me... I'm also a ford guy and this is my first chevy product.. haha.. jk guys!! Just need some help and want to hear from people well more knowledgeable than me!
So, we picked this boat up last July with 310 hours on it. Ran amazing all last summer. I winterized the boat and have went out this season on 3 great trips/cruises. I actually don't run the boat a whole lot. We are on a mooring buoy and we go out for like a 10 minute cruise at 3500ish and then just go to a cove and hang out for a few hours. I can't fully speak to it's last life but with me, it's fairly easy I would say.
So, on the 4th trip this year, I had 7 people with and right off the bat, it felt like it was missing some power. I cruised 3500 for about 3 or 4 mins and thought I heard a slight click pop.. kind of backed it down, nothing, started cruising at 3500 again and heard a few more clicks/pops. At that point, I realized I was losing power and started to shove the throttle foward some more and hit max throttle and noticed the motor was giving nothing more. So, I shut it down quickly. Boat died. Popped the lid and saw little smoke. Started it back up and had some smoke spilling which seemed to stop. I eased it out of the main body and over to a cove and noticed the water temp was erratic. I let it sit for a good hour checking things over. Oil looked okay on dipstick. Took 20 sec of cranking and it finally started but sounded like absolute crap. Popping sound. Had my buddy tow me back to the buoy.
Everyone said it was the fuel filter letting water through. So I changed that and put some as in the carb to ease the start. Well it was a hard start and finally fired and sounded absolutely terrible again. Plugs all were in tact. Found #5 to be completely dead, no compression reading. Compression is as follows:
Driver Bank (this side never made a noise)
2 - 90 (worn valve)
4- 110
6- 110
8- 110
Passenger Bank (this is where the popping noise came from)
1 - 150 (water?)
3 - 110
5 - dead to the world
7 - 150 (water?)
So, first STUPID question - this boat is stranded on my buoy obviously. Today, I checked oil and it is MILKY, ugh.... I pulled the passenger exhaust riser and manifold. It just hit me, are these flappers in the hull pipe? I only pulled the riser and rubber coupler. I'm not at risk for sinking the boat by allowing water to come through the exhaust am I?? I was out there for 2 hours and never seen anything.
Ok, so exhaust riser, manifold and valve cover off on passenger side so I can get to this dead cylinder. Rockers and springs looked fine. So, I guess next I need to get the intake and carb off (I see they can be pulled at the same time). Kind of looks like the power steering may need to come loose as it looks bolted to the head. Anything else major that I'm about to run into? I will loosen the rocker and get the rods out and mark them. I think thats about it.
Oh, I need to mark the disty as is? Do I need to get #1 to TDC and THEN mark the disty?
The main issue is just dealing with some light wakes while I'm doing this as boats bust open the main body of water. Making for some decent motion sickness, which I've dealt with my entire life lol.
Finally, I really don't know what actually caused this. Maybe it was the fuel filter like people are saying. I poured out the contents and there was major debri and a brown alternate separate fluid which I'm assuming is water. The more I read on here, sounds like a bad exhaust riser/gasket/flapper failed on me is a more common failure. Boat is 21 years old now and no one has had to do any real maintenance to it so I guess it was about due..
I'll let you guys know what I run into when I get the head off. Hoping it is a severe head gasket blow. If I find a detonated piston, guess I will need to get towed to the ramp so I can take it to the shop to get a new block installed. The driver #2 cylinder being a little low at 90 psi is also bothersome. Maybe a valve is burned. I've never done any internal work before to an engine. I'm a overhead cam guy and have done motor swapping, rear ends, some manually tranny work, superchargers... But this is a first for me... I'm also a ford guy and this is my first chevy product.. haha.. jk guys!! Just need some help and want to hear from people well more knowledgeable than me!