Have Boat Questions? Ask a Boat Repair Expert.
Hello, my name is***** will assist you.
Has the engine been sitting for some time?
Yes, I m here. I was looking up your engine.
Were the old plugs fouled at all?
Ok, can you do a compression test on the engine. Lets make sure that the block is in good shape.
Thats fine, there are no time limits here. While there, look at the plug tips and see if they are all the same color. The readings should be over 90 PSI and all with n 15% of each other. If that is good, Remove the drain screws from the side of the carb bowls and try to catch the fuel that comes out. Look for any debris in it.
Ok, so its not running on the bottom cylinder. That would be why the engine is down on power. Compression, and spark need to be checked first. If those are both good, it points to a blockage in the carb.
Sounds good. I am going to send you a phone offer as well. There is an additional fee for it, but I can be on the phone with you as you are at the engine.
Take a spark tester with you on the next trip. When the engine cuts out, quickly do a spark test, see if one of the coils is failing when it gets up to temp. If it is, replace that coil?
Check the fuel line from the boat to the engine. Make sure that it is not coming apart on the inside. That could be what was seen inside the filter.
It does sound like the carbs are stopped up. If it does not get any better the next time that you run it, you will need to remove the carbs and clean them.
Any good marine fuel stabilizer will work for the storage of the fuel. Just make sure that you run the engine for at least 15 minutes at idle on a hose to ensure that the product gets into the carbs.