Thanks for the feedback. Going to insist he pull the heads and have a look at what we have. Need to figure out what caused the damage and build a plan from there. I think spending 17K with out openning up the motor doesn't make any sense.
Quick update. Wasn't able to get to the boat today but spoke to the mechanic. He said he wanted to replace the block because the piston rod likely damaged the crankshaft - flattening the crankshaft. He said if he did did the heads it would likely blow the motor down the line. I am going to get...
Haven't been able to get to the boat for more inspection this week. The mechanic who did compression test ran a scope of the bad cyl. He told me the valve dropped and made contact with the piston. Not even sure he pulled the valve cover to have a look. Going over today to have a look and talk to...
Thanks for the all the advice.
Bondo - good point on figuring out what's wrong and why it happened. Maybe I'll dive in and pull the heads and go from there. If I can source a long block and swap it out over a few weekends it might be a fun project. Or a deep rabbit hole I'll spend the summer in :)
Thanks for the advice Kenny. Unfortunately, the boat is not trailerable - 32". Also I can do some basic wrench turning but this seems like might be beyond my skill set and free time. I am going to the marina tomorrow to talk to them. I guess I'll ask them to pull the head to get a better idea of...
Looking for some help. I just launched for the season and on 1st run had port engine running rough. After about 20 minutes I pulled into the marina and asked the shop to have a look. The next day they did a compression test and #4 had nothing. The mechanic used a bore scope and told me that it...
Hey all, I am a new member to this forum. I am hoping someone can help with some guidance. I am trying to get access to my port fuel sending unit on a 2007 Four Winns 318 Vista. My gas gauge is not working and I am trying to diagnose the issue. I removed the fridge under the top side sink where...
I have had a cooling hose on my 1999 merc 7.4 cut by the main belt. this seems like a flawed design as the belt is too close to the hose. this is a 1.5" formed c shaped cooling system hose. When I replaced it after the original was cut it had about a 1/2" clearance from the belt. over time it...
I have 1999 Crownline 266ccr with 7.4 Mercruiser. Tech said starter needs to be replaced. Can this be done without pulling the manifold? is this a DIY job or should I take to shop? Also what is a cost range for shop to do this - i know there are many variables but looking for a range.
Thanks in...
I have a 1999 Crownline 266CCR with a 7.4 Mercruiser MPI. I was having starting issues last year - clicking noise when key turned - but it would eventually turn over. I figured I would replace the starter slave solenoid prior to launching as it is an easy job. I now have no power to any gauges...
