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So I need some help guys and gals. I have a 2004 2 stroke Yamaha 150HP. Have owned it for one year. It is on an 18 foot Mako. All last summer it ran fine. Sometimes I would hear a slight burp/miss I will call it when coming down off the throttle and coming off a plane. Very hard to notice unless you were listening for it. Never seemed to impact performance at all. So in the fall I took it to a mechanic who is very well regarded. In fact his primary business is engine rebuilds/remanufacturing. First I had him due a compression test. All was perfect. He said it had a computer code noting a failed injector which was probably clogged a bit. He said he could clean all the injectors but since we did not know how old they were best option would be to replace them all. I said go ahead. At the time he said he would hold the boat and do the work in the spring along with other routine maintenance. Great - free storage. three weeks ago I visited the shop and saw the engine being worked on. It was tilted up while it was being worked on. Seemed odd to me .....I commented on it to a shop hand and he too said ya not sure why and wish it was down as he kept walking into it!
Two weeks ago Mechanic calls to say he changed the injectors and put the engine in a tank and it started fine. With in a minute or two at idle the engine siezed. He had no explanation other than to say it happens sometimes. He ultimately agreed to dig into the engine to fine out what happened. See pics of the lower left bank cylinder and head. He even said the markings look like a injector due to the ridges. He does not recall the old injectors condition when he pulled them out. He also said something could have broken loose in the fuel system and made its way into the engine. Either way he says he is not at fault at all.
My thinking is part of the old injectors somehow fell off when it was removed, or something got into the cylinder when he was working on it. With the engine tilted up something could have fallen in during the compression test or injector change.
The mechanic says there are lots of similar used engines on the market and he could find one for us to buy.
What do you all think? I need to know how hard to push this guy to make it right. My boating season is normally about to start in a month. If I have to go find a new / used engine I need to do that ASAP.
Two weeks ago Mechanic calls to say he changed the injectors and put the engine in a tank and it started fine. With in a minute or two at idle the engine siezed. He had no explanation other than to say it happens sometimes. He ultimately agreed to dig into the engine to fine out what happened. See pics of the lower left bank cylinder and head. He even said the markings look like a injector due to the ridges. He does not recall the old injectors condition when he pulled them out. He also said something could have broken loose in the fuel system and made its way into the engine. Either way he says he is not at fault at all.
My thinking is part of the old injectors somehow fell off when it was removed, or something got into the cylinder when he was working on it. With the engine tilted up something could have fallen in during the compression test or injector change.
The mechanic says there are lots of similar used engines on the market and he could find one for us to buy.
What do you all think? I need to know how hard to push this guy to make it right. My boating season is normally about to start in a month. If I have to go find a new / used engine I need to do that ASAP.
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