Started, died and wont restart

[rickasbury]

I have a 07 350 mpi with 300 hours.
Recently replaced wires, plugs rotor and cap. I had run the boat in the water afterwards and it ran great.

I brought the boat home to work on some issues...I started up on muffs with no issues. I replaced my trim switch, selonoids and rams. I also changed the oil. I must have not got all the old oil out as when I checked the dipstick while in the water it is overfilled...probably an inch on the dipstick. When I put the boat in the water today it started up no problem. I got it off the trailer and left it running while I parked the truck and trailer. Got back on the boat and it had shut down. I tried to restart and it turns over and sound like it wants to start but does not "catch"- I did check the kill switch...

 

[dubs283]

Check spark

Check fuel supply

 

[rickasbury]

New plugs, New fuel filter..understand still could be a fuel issue. Being told that over fill through can somehow go thru the exhaust and get into the cylinders and fowl the plugs...there was a sheen around the boat so I will pull some oil out and see if it blows it out...if not pull the plugs and check fuel supply.

Thanks

 

[ROY WILLIAMS]

New plugs, New fuel filter..understand still could be a fuel issue. Being told that over fill through can somehow go thru the exhaust and get into the cylinders and fowl the plugs...there was a sheen around the boat so I will pull some oil out and see if it blows it out...if not pull the plugs and check fuel supply.

Thanks

did the fuel tank , gasoline did the dirty ? the engine oil is colored ?
I was dropping the my engine oil at 24 hrs ....
the fuel tank is draining the gasoline in the fall ...used the vent tank sealed it in the winter ,,,,,. also the marvel mystery oil in the cylinders 1 OZ....

 

[rickasbury]

Well...I broke down and went to harbor freight and bought an extractor. What a difference. I'm not sure that was the failure problem however. I don't think it ran long enough.
So I pulled the excess oil out and got it down within range and it the key hoping I'd flood it out enough to clean off the plugs....hit the key and it almost wants to start and then just sounds like not getting fuel. So, figured I'd pull the fuel water separator and see what was going on there...great plan until I spun it off and it slipped out of my hand and is now under the motor where I can't reach it...but it looked like from what spilled I could see beads of water.

So, I put a container under where the filter spins on and hit the key putting a little fuel in the container. Looks like about 10% of what came out is water! So the water would hit the bottom of the tank and I assume the fuel pick up is also at the bottom of the tank so hopefully it is not proportionate to what is in the tank...do I buy several filters and replace them as needed? I've never dealt with this before...once that filter gets a lot of water in it does it stop the fuel from flowing I assume? I have a 100 gallon fuel tank, how the heck would I drain it?

 

[QBhoy]

You’re going to need to get every last drop out that tank, I’m afraid. Many have been fooled into thinking that they can just add 20 gallon of fresh fuel on top of 5 gallon of bad fuel and it will be ok. Some rarely get away with it…but usually all you’ve done is created 25 gallons of bad fuel. Even if she runs ok for a while…that water will raise its ugly head at some point down the line. Usually at the most inconvenient of moments !
If you can access the tank level sender unit, take that off and get a pump line down there. If you can’t, take the fitting off the filter and get a hose on there and pump. Even a wee outboard priming bulb fuel line will get you there eventually.
New filter from there and bleed the shrader valve on the fuel rail to purge any duff fuel from there.

 

[MarcelSydney]

Been there, done that. It took a while by a jiggle siphon but it was worth it. Emptied the tank into jerry cans and wiped the inside of the tank clean with rags on some wire. Made sure it was spotless. Unfortunately, there were small amounts of junk in mine so had to rebuild and clean the carb at the same time.
After that it runs a treat.
If I was doing it again, I reckon a small cheap 12v fuel pump from a wrecker (from any sort of vehicle) would have made it a lot faster.
There might be pumps you could attach to a drill that would work too.

 

[ROY WILLIAMS]

Well...I broke down and went to harbor freight and bought an extractor. What a difference. I'm not sure that was the failure problem however. I don't think it ran long enough.
So I pulled the excess oil out and got it down within range and it the key hoping I'd flood it out enough to clean off the plugs....hit the key and it almost wants to start and then just sounds like not getting fuel. So, figured I'd pull the fuel water separator and see what was going on there...great plan until I spun it off and it slipped out of my hand and is now under the motor where I can't reach it...but it looked like from what spilled I could see beads of water.

So, I put a container under where the filter spins on and hit the key putting a little fuel in the container. Looks like about 10% of what came out is water! So the water would hit the bottom of the tank and I assume the fuel pick up is also at the bottom of the tank so hopefully it is not proportionate to what is in the tank...do I buy several filters and replace them as needed? I've never dealt with this before...once that filter gets a lot of water in it does it stop the fuel from flowing I assume? I have a 100 gallon fuel tank, how the heck would I drain it?

I used the manual fuel pump,,, https://www.amazon.com/Siphon-Gasol...92421&sprefix=fuel+pump+manual,aps,115&sr=8-8
sucked out the FALL of the year of my boat gasoline ...
I was the boat gas tank of the venting then I updated it of that gas filter charcoal ..

 

[nola mike]

May or May not get away with just pumping the bottom. Crap and water will be there. But the leftover fuel may be sub par. How much fuel is in the tank? Full 100 gallons? When my boat was submerged I managed to get away with doing that, and I frequently get rid of water on the bottom in Jerry cans.

 

[rickasbury]

May or May not get away with just pumping the bottom. Crap and water will be there. But the leftover fuel may be sub par. How much fuel is in the tank? Full 100 gallons? When my boat was submerged I managed to get away with doing that, and I frequently get rid of water on the bottom in Jerry cans.

Probably about 75 gallons.
I picked up two separator filters and a new inline. I think I will go ahead and grab a primer bulb and pull the sender and see what is in there. I'll pull the fuel sender. With the boat on the trailer and the front cranked up I'd think most of the bad will have settled right under where the sender sits...

 

[rickasbury]

Well, that was not going to work unless I wanted to pull the generator which would probably mean pulling the motor- I treated the fuel with Heet. I need a means of getting that crap out of the fuel rail. I came up with a line from a pressure tester to open the valve on the rail and turn the key to energize the fuel pump and got maybe a quarter inch in a pint container- half of it is water. I found on line a valve I can buy that has a hose barb but hesitant to crank the motor with spark while draining the fuel out - can I remove something from the ignition so I can crank it to get this fuel out?

 

[nola mike]

You might also be able to get to the tank through the vent line. looks like the starting system is separate from the PCM, so pulling the fuse to the PCM should disable the ignition and let you crank.

 

[rickasbury]

You might also be able to get to the tank through the vent line. looks like the starting system is separate from the PCM, so pulling the fuse to the PCM should disable the ignition and let you crank.

Thanks- will that disable the pump? I need the pump to blow that old fuel out of the rail. I found a fitting for that pressure valve that has a hose barb on it..I'm sure I can secure the line but I really don't want that thing firing!

 

[Bondo]

but I really don't want that thing firing!

Ayuh,...... Just pull the coil wire, 'n ground it,.....

 

[rickasbury]

Ayuh,...... Just pull the coil wire, 'n ground it,.....

Thanks bondo- how do I ground it?

 

[Bondo]

Thanks bondo- how do I ground it?

Hold it to the block,...

 

[rickasbury]

Hold it to the block,...

Can't I just remove it? If I ground it to the block it can still spark...if I have fumes or any gas spills in the process and it sparks...this is an i/o and I don't want to blow it up!

 

[dubs283]

If I ground it to the block it can still spark...

Only if there is an air gap

Personally, I use a jumper wire clipped to a solid block ground with the other end clipped to the coil wire tang that connects to the distributor. Never had an issue this way

 

[Bondo]

Can't I just remove it? If I ground it to the block it can still spark...if I have fumes or any gas spills in the process and it sparks...this is an i/o and I don't want to blow it up!

Ayuh,..... If you just remove it, it's highly likely to jump a spark from the tower, to it's (-) tiny terminal,.....

 

[nola mike]

Ayuh,..... If you just remove it, it's highly likely to jump a spark from the tower, to it's (-) tiny terminal,.....

And you run the risk of frying your PCM if that spark doesn't jump...