OIL INJECTION

[G-MAN]

Help!

I finally removed the oil injection system from my 1996 Mercury 150 EFI.
Replaced the pump with a plug from Mercury. Removed the Oil tank and disconnected the float sensor. Removed and disconnected the pump motion sensor.
Took the boat out saturday and it still beeps. emoScratch
Do I need to tie the wires together that I removed from both or one of the sensors?

 

[wrechin2]

Did you remove the oil injection module?


Is it making a very erratic beep about 5 to 10 seconds after it is running?

 

[G-MAN]

wrechin2 - 3/23/2010 5:16 PM

Did you remove the oil injection module?


Is it making a very erratic beep about 5 to 10 seconds after it is running?

It may have been 5 to 10 seconds after it is running and it stops beeping at times and starts back up again (eratic) like your describing.

I only removed the oil float module and pump shaft motion detector, so the oil injection module must still be on it. Not sure where this is located. Must be downstream of where I disconnected the wires to the two sensors.

 

[wrechin2]

It is mounted on the port side of the block. Just follow the wires of the sensors you removed.</p>

BUT......If the beep is VERY erratic (crazy type beeping)then it MORE THAN LIKELY in the water fuel filter and the water sensing module triggering the alarm. The oil injection module would not have turned off unless it is faulty. On the front of your ECU (computer) mounted on the front of the engine, is a small square box with a red light on it. If when the alarm is going crazy and the red light is on, then it is water in the the fuel filter. This is with out hearing the alarm signal for myself.</p>

 

[G-MAN]

wrechin2 - 3/23/2010 5:43 PM



It is mounted on the port side of the block. Just follow the wires of the sensors you removed.</p>

BUT......If the beep is VERY erratic (crazy type beeping)then it MORE THAN LIKELY in the water fuel filter and the water sensing module triggering the alarm. The oil injection module would not have turned off unless it is faulty. On the front of your ECU (computer) mounted on the front of the engine, is a small square box with a red light on it. If when the alarm is going crazy and the red light is on, then it is water in the the fuel filter. This is with out hearing the alarm signal for myself.</p>

Its not crazy type beeping. Its always the same rhythmic beep-beep repeated sound. When I first had the problem it only happend once in a while. It started happening more often. I was told that the module was probably going bad and that the oil injections was probably fine. The least expensive and safest thing was to disconnect the oil injection and mix myself.

The beeping is almost constantly happening now, but it will stop every now and then.

So, if the oil module is bad, all I need to do is remove it?

 

[wrechin2]

YEP! Simple as that. There are only a few wire to disconnect. The purple, black, and tan. Unbolt and throw away.

 

[G-MAN]

wrechin2 - 3/23/2010 7:20 PM

YEP! Simple as that. There are only a few wire to disconnect. The purple, black, and tan. Unbolt and throw away.

U Da Man!

Thanks!

 

[wrechin2]

If you still have a pulsing alarm, then it will be the water sensing module.

 

[finbully]

Why remove the oil injection system? Just curious, I like the way my engine runs stock (250 Yammie V-Max HPDI).

 

[wrechin2]

finbully - 3/23/2010 6:03 PM Why remove the oil injection system? Just curious, I like the way my engine runs stock (250 Yammie V-Max HPDI).

</p>

On a 2.0L, 2.4L, and 2.5L mercury V-6's they are ticking time bombs. There has been MANY Mercury engines rebuilt because of oil injection failures on these. The weak link is the PLASTIC gear on the crank that drives the STEEL shaft on the oil injection pump. With DFI engines, you HAVE to have oil injection for it to work properly. These engines with either EFI or Carbs will work just fine with it removed. The only down point is they smoke a little more at a idle. At WOT the oil injection mixes at a ratio of 50:1 so with it premixed at 50:1 in the tank, it is the same.
</p>

 

[G-MAN]

wrechin2 - 3/24/2010 3:30 AM

finbully - 3/23/2010 6:03 PM Why remove the oil injection system? Just curious, I like the way my engine runs stock (250 Yammie V-Max HPDI).

</p>

On a 2.0L, 2.4L, and 2.5L mercury V-6's they are ticking time bombs. There has been MANY Mercury engines rebuilt because of oil injection failures on these. The weak link is the PLASTIC gear on the crank that drives the STEEL shaft on the oil injection pump. With DFI engines, you HAVE to have oil injection for it to work properly. These engines with either EFI or Carbs will work just fine with it removed. The only down point is they smoke a little more at a idle. At WOT the oil injection mixes at a ratio of 50:1 so with it premixed at 50:1 in the tank, it is the same.
</p>

I read somewhere that at idle the mixture was way below 50:1. I can't remember exactly what it was, but it seemed like it was as low as 25:1. This is in line with the smoking that your speaking of.
Before I changed the pump out, I was mixing 50:1 in tank along with whatever the pump was adding. It ran fine. I'm changing the fuel filter and plugs this weekend.

Do you recommend any additive to the gas?
I've seen some additive that is suppose to be good for the ethenal. There seems to be a few out there and I'm sure that some are snakeoil (claims to cure everything).

 

[wrechin2]

You actually have it backwards.... It run a 100:1 at idle and up to 50:1 at WOT. The only way you are going to have 25:1 is on a engine being broke in due to the fact you add a 50:1 ratio to the oil and the oil injection adding 50:1 which results in 25:1 which is probably what you were running.

I only add sea foam to the tank. It doesn't do anything to neutralize the effects of ethanol.I wonder how they are going to make alcohol not be harmful??? Ethanol is a a SOLVENT not a fuel and it dries out rubber hoses from the inside out and shrinks gaskets creating leaks and debris in the fuel system.

Here is the explanation of oil injection for your engine.

 

[G-MAN]

Thanks! I definately had the ratio's bassackwards.

I was looking at the diagram in this link and noticed the powerhead heat sensor is also connected to the module.
Looks like I'll be loosing the heat sensor alarm if I remove the module. emoScratch I really hate loosing the heat sensor alarm.
I'm definately going to check the fuel water sensor first.



http://continuouswave.com/whaler/reference/mercuryOilInjection.html