Have Boat Questions? Ask a Boat Repair Expert.
Hello, my name is***** will assist you.
What is the make and model you your engine?
I am going to have to decline the call for now.
Do you have the serial number of your engine?
How long has the boat been sitting?
When you turn the key on, do you hear the electric fuel pump run?
Ok great. Have you tested the fuel for water, and how is the oil level on the engine?
Remove the spin on fuel filter and dump it into a glass jar. Allow it to settle. If there is 2 layers in the jar, it has water.
The filter looks like an oil filter, just it is in the fuel line. Mounted low on the left side of the engine when looking down at it.
Let me know what you see there.
No worries, There are no time limits here.
A standard oil filter strap wrench should get of out, provided the O-ring was oiled before it was installed.
Sounds good. I will be on for a few hours more tonight.
Great. You will need to test the engine for spark using a sealed adjustable gap tester. This is the same one that auto techs use. Test from the coil to the dist and then each plug wire. Your issue may just be that a tune up needs to be done. This would include new cap, rotor, wires and plugs.
Your welcome. Make doubly sure that the kill switch in fully inplace and on. That would also make the engine not start.
Yes the kill switch is working.
Yes you can. It is the inline one with a glass case to enclose the spark. Set it to 7/16"
Ok, you have spark, there are two other items needed for the engine to start. Compression and fuel, I would start with fuel since it would be so rare for all 6 cylinders to lose compression that the engine to not start.
If you have a can of starting fluid. Spray some inside the carb, put the flame arrestor back on, then try to start the engine. It should at least try and start on the fluid. You could also use a bit of gas if not spray is available. If it does try and start, I would remove the carb and clean it. Also make sure that the auto choke is working on it.
Yes that is it.
It is connected to the front of the carb, you should feel it get warm when cranking the engine over.
But with fuel in the intake, it should have at least hit, or tried to hit.
Have you looked at the spark plugs? I would be interested to know what the tips of them look like.
If they have been in the engine for several years, replacing them is not a bad option.
Have you checked the gap on that plug. Looks pretty large.
The engine will fire with no water hooked ti it.
Remove the flame arresstor and the connector for the throttle cable on the side of the carb. Looking down into the carb, with the key off, Move the throttle lever on the carb from its stop to full throttle. See if there is any fuel being sprayed from the two jets in the center of the carb. If there is not, it is just not getting fuel.
There is a filter on the inlet of the carb where the line attaches. Make sure that it is not clogged up.
Remove that line from the carb, hold it into a container to catch fuel. Have a helper crank the engine over and see if you can get fuel to the carb. That electric pump may not be drawing fuel from the tank. If that is the case, I would suspect the anti-siphon valve on the outlet of the tank, or a closed valve. to inspect the valve, you would need to remove the fuel line and then unscrew it from the tank pick up.
Is the carb now shooting fuel if you try the throttle arm on it like before?
The floats are stuck inside the bowl. You can try to free them by tapping on the carb bowl with the wooded handle of a hammer. If that will not work, the carb will need to come off and be cleaned.
Yes, it that area.
If you are really handy with tools, you could do it, but you would need a gasket kit for it and should replace the needles as well.
The needle is part 14. The one with the spring is the accel pump. Part 15. the carb is made by Mercury, most auto parts stores will not have a kit for it.
Your welcome. I hope that you can get out there soon with it.
The needle itself is one piece, the set comes with the seat as well as the needle.
See if they have gasket###-##-#### That is the one that you need.
did you clean all of the passages in the carb?
Ok. Let me know how it goes.
That is a very good step in the right direction. Lets hope that you can get on the water this weekend.
Make sure that it is building oil pressure. There is an oil pressure switch on the side of the block that will cut spark if it pressure is not there.
that is correct. Have you tried to advance the throttle when cranking to get more fuel and into the intake.
You are positive that you have spark on all 6 cly?
Ok, do you have a separate fuel source that you can try. The fuel in the boat may be the issue. Dump the fuel filter on the engine, hook a tank to the inlet of it. And then crank the engine some. It will take a few to get fuel into the filter and into the carb.
Your welcome. I know that it has to be close to starting. Possibly something like a small carb adjustment.