Nussy said:
I bought this boat without running the motor which I knew I should not have done, but I thought it was a great deal even if the motor didn't work, so it didn't matter at the time. I'm now at a point where I need to know if the motor works so I spent some time trying to get the motor to work last night. Ugh! The gas line leaked so I ordered a new one last week. The gas line I ordered came and the bulb was installed backwards so it wouldn't pump gas up to the engine. Didn't have the hose clamps to fix it so I tried to use the old line to get it running. Took a look at the plugs and they seamed to be clean. Used new gas. Motor turns over but just won't fire up. I can't really tell if it's getting gas. Should I try spraying some starter fluid in the carb?
I'm not sure what to try next. I don't know engines very well, so I might have to take to a repair shop.
Any ideas on where to start?
Get a repair manual for your motor.
The first thing I would do is a compression test, you want them to be within 10% of each other and around 90 PSI; although I have an older model 5 HP that only has about 70 PSI and she runs fine. The compression test will tell you if it is even worth putting money into.
if it passes the compression test then check for spark with a spark tester. If it fails you will need to rebuild the ignition system, proly take about 3 hours, if it passes move to the fuel system.
At the minimum I would rebuild the carb, and replace the fuel lines, and then do a link and sync.
Replace the water pump impeller.
Put new lower unit lube.
You can borrow the compression tester and spark tester from your local autoparts store and, if you need to change the ignition system, you will need a strap wrench to remove the flywheel, which you can also borrow from the same place.
If you need to replace the ignition system, rebuild the carb, install a new impeller and add new lower unit oil; you can proly do all this for less than $200 and a full day of your time.
I did all this to my engine for the first time and it only required about 6 hours and a minimum of parts, all available online; and I had never even changed a sparkplug in a boat motor before. So, if I can do it, you can do it!