2.4 Bridgeport water problem

[Eric stott]

I have a 2.4 but I'm not sure what year it is because the serial plate is missing. I have a newly rebuilt foot that was done by a mercury mechanic and I had him go ahead and put a new impeller and plastic housing in it while he had it apart. My problem is I get water through the poppit tube but none to the heads. I read on here about replacing the thermostats with washers and have done that and it didn't change anything. I replaced all of the hoses on the motor and flushed it out with water from the top down. Everything seems clear but for some reason I can't get water to either head. I should also add this is the first boat I have ever owned so I'm definitely not a boat mechanic.

[transomstand]

Put the stats back in and post photos of the powerhead showing the exhaust plate so we can identify it. DO NOT throw "advice" from unrelated threads at it to try and "fix" it. This can more often than not end up with a pile molten aluminum instead of what used to be a serviceable engine.

[Eric stott]

[transomstand]

I see nothing to indicate that motor is a Bridgeport. Looks more like an early to mid 1980's 200. Appears to have a 2 piece exhaust plate (from what I can see) and somebody modified the poppet cover because there seems to be an endless fascination in this world for some to have 2 dump hoses.


Assuming the motor was ok before the gearcase work, we need to go there to find the problem. Is the copper tube inserted correctly in the water pump body, is the seal in place, correct pump cover/gaskets etc?

[Eric stott]

Like I say this is my first boat so I am new to all this. The cowling says it's a bridgeport but it may not be. The motor was supposed to be fine but had been sitting for a couple years.

[transomstand]

Once everything is rechecked in the water pump area, we should restore the poppet to it's stock configuration. If somebody gutted it, you won't have crap for water pressure at idle and might be the whole issue. Main thing is to have an orderly diagnostic progression, check one thing at a time and move to the next. Do you have a shot of the gearcase?

[Krazymaan]

You also need to change your hoses so they look like this. Your hose routing looks like a chevy mechanic worked on it.
mine is a 1984 2.4. Your motor is not this motor, yours has more things cast into the block like above the head. Yours should be newer i would guess. Plus a Bridgeport motor has no paint on it anywhere.

[Krazymaan]

If you don't fix your water flow issue, this is whats going to happen next with no warning.



There is a silver plug at the top of your engine above the cylinders, the numbers in there will help ID the motor. Its called a Welsh plug

[Krazymaan]

The other side of your motor should look like this.
Your fuel line needs to start at the bottom and fill the carbs from bottom up.
Your fuel lines are too small going from carb to carb. They are choking themselves out. you will melt a piston.
Zoom in on my motor and look at the subtle differences and yours should look more line this one.

[tlwjkw]

not bridgeport don't think.. paint is usually tha first thing that tells ya that but have seen some ya-whos actually paint one!........ ya gotta real "hodge podge" motor there... front half is '80/'81... block half is '83 or a tad newer.. that poppet rig needs ta go first thing..
there is a 3/4 pipe plug on top of tha block.. pull it out and see if ya have water there when ya start it.. if not then something wrong with pump and/or between bottom of block and pump.. this is jus tha start... needs bleed lines if ya gonna do any idlin' at all............

fuel lines are fine other than tha feed is to short and looks bad... last two numbers don't indicate year...

[Krazymaan]

I realize this post was about your water issue, but there are other things that needed addressing. Don't want you to blow it up after you fix the water issue.

If you look at the above photo with my melted piston engine dangling above the midsection. That is a 2 piece adapter. The part that zig zags uphill and faces the boat like Nessy.
This is the adapter plate your suppose to be using thermostats in the heads with this adapter plate. It adapts the motor to the midsection, get it?

The other thing that gets overlooked a lot is the fact that its ok to not see water coming from the stat hoses. when your motor is cold and the stats aren't open, water then dumps into the midsection and come out of the propeller.
On the same note if your stats aren't open yet, the water dumps out of your poppet valve hose. But if there is too much water backed up, it comes out of your prop. Or water would boil in the sleeves waiting its turn to escape the motor.

[tlwjkw]

I read on here about replacing the thermostats with washers and have done that and it didn't change anything.

ya gotta read tha whole thing...........

[90 5.0]

I can't see well enough in the picks but it looks like it's on an Allison, and if it has a Bridgeport cowl there is a good chance it has a one piece BP adapter plate.

That would be why the water dump on the poppet is the way it is.

Need to post pics of the whole set up, or take it to someone that really knows what they are doing.

[tlwjkw]

look at tha poppet pic close.. 2 piece.

[Eric stott]

It is on an Allison. Here are some more picture.