Ford Mermaid Turbo 4 / Pacific 22

Atlantis.diver · 30 August 2016, 21:18

Hello everyone, I have a slight problem with my pac 22. Couple of things I would like to ask if some can help me.

1) my engine under load at WOT is 2200rpm with a turbo boost of 4psi with only two persons onboard. Iv read on my manual it should 2870 and should be kept to 2600 @ 140bhp. When not under load and in neutral it can Rev upto 3100rpm. From what I can gather it should boost anything between 14-18psi.
Iv taken the intercooler off and given a good clean. And checked pipes, no holes nothing. Will pit back together tomorrow, check for leaks. If this won't work what else could it be.

2) my temperature gauge shows just under 150 on the dash on the pac 22 is this normal. I'm not sure if it's deg Celsius or Fahrenheit. I wondering if my unit is overheating or normal.

Any help would be much appreciated, thankyou

breezeblock · 30 August 2016, 21:30

make sure its getting a proper fuel supply for a start no fuel=no boost double check the gauge with a second if your not sure about temp

Atlantis.diver · 31 August 2016, 03:52

Everything seems to be fine in that department, all hoses ok, throttle is opening as it should. Don't really want to take pump off.... Big job apparently. Could do with engine out. :-(

GuyC · 31 August 2016, 06:26

My Pac 22 runs with a temperature of around 80 degrees celsius which is 175 degrees fahrenheit. My van runs at a similar temperature so I'm guessing it is correct. Are the water levels OK?

My turbo boost gauge doesn't work (or I've got no boost) so I don't know about that. It does make a turbo'y noise so something is happening. The boost gauge is 12V whereas the rest of the gauges are 24V. There is a 'diode' that changes the voltage from 24V to 12V. That could be at fault.

Have you tried undoing the adjustment screw on the pump a bit and see what happens? I'd do 1/4 of a turn.

yam man · 31 August 2016, 07:21

Have you checked the boost compensator on the pump

Atlantis.diver · 31 August 2016, 09:11

Quote:

Originally Posted by yam man

Have you checked the boost compensator on the pump

No I haven't as i don't know what it looks like... Could you shed some light on that for me :-)

Atlantis.diver · 31 August 2016, 12:14

Thanks for that, at least my temp is ok. But my engine is not making a turbo whistle at all. I'll put a pic of my gauge up and see if that's the same as yours

Quote:

Originally Posted by GuyC

My Pac 22 runs with a temperature of around 80 degrees celsius which is 175 degrees fahrenheit. My van runs at a similar temperature so I'm guessing it is correct. Are the water levels OK?

My turbo boost gauge doesn't work (or I've got no boost) so I don't know about that. It does make a turbo'y noise so something is happening. The boost gauge is 12V whereas the rest of the gauges are 24V. There is a 'diode' that changes the voltage from 24V to 12V. That could be at fault.

Have you tried undoing the adjustment screw on the pump a bit and see what happens? I'd do 1/4 of a turn.

beamishken · 31 August 2016, 21:08

I'd put a gunge direct into the manifold to double check the boost
If you realy have only 4psi boost that's likely your problem
I'm not an expert on the Ford engine but 4 psi seems way too low for a turbo engine

breezeblock · 31 August 2016, 21:42

before you start twiddling screws etc make sure the fuel system is spotless bleed it up make sure there is no air in the system if your not getting fuel pressure it won't make boost pressure make sure the throttle is reaching the stops on the pump check the lift pump and filters have no blocked screens do the basics before you start adjusting stuff does the turbo have a waste gate is it seized open?

beamishken · 01 September 2016, 08:39

Quote:

Originally Posted by beamishken

I'd put a gunge direct into the manifold to double check the boost
If you realy have only 4psi boost that's likely your problem
I'm not an expert on the Ford engine but 4 psi seems way too low for a turbo engine

That should have said gauge not gunge bloody autocorect! lol

Atlantis.diver · 01 September 2016, 09:37

Fantastic info I will try all these things and be sure to let you know how I get on

Atlantis.diver · 02 September 2016, 21:09

Just to give you a updated... So far Iv checked all hoses for turbo... And intercooler not splits or leaks. Give the intercooler a good clean. Lift pump working and in good condition. Now looking closely at turbo gauge only showing 4 psi, whistling nicely plenty of pressure. So I think it's a faulty gauge. Trying another one tomorrow. I'm fairly confident the turbo is working normal. So would i be correct if the the pump would be the culprit.

beamishken · 02 September 2016, 21:52

Once you have determined you actually have reasonable boost pressure then assuming it's not smoky then as yam man says look at boost compensator which is designed to alter the fuel/ air ratio
More boost should equal more fuel delivered so if it's not smoky on load then a good bet it's not getting enough fuel

Ian Austin · 03 September 2016, 08:21

There isn't a boost compensator fitted to this engine, if you have little or no boost, it will black smoke and be sluggish.
The factory boost is 0.5bar around 7psi, you can run a bit more boost by opening up the screw on top of the pump.

80deg C is about the right temperature, they do run too cold really.

beamishken · 03 September 2016, 09:20

If no boost compensator or waste gate then there is no way to vary the boost pressure by messing with the pump.
I'd imagine there is a diaphragm on top of the pump which alters the fueling to match the boost pressure I guess this is what yam man is referring to
I agree if there is no black smoke and you have determined you have correct manifold pressure then there isn't enough fuel going in if it's down on rpm
If the engine is overloaded causing the lack of rpm then it should black smoke

Atlantis.diver · 03 September 2016, 12:58

Right ok guys.... There is no black smoke under load... And Iv been told by mermaid that I should have at least 1 bar of pressure 15-18psi. Im beginning to think the pump might need adjusting to the correct setting as it does look like it's been played with at some point.

beamishken · 03 September 2016, 22:22

Probably a good idea to confirm manifold pressure before starting to alter pump settings

Atlantis.diver · 04 September 2016, 15:37

Quote:

Originally Posted by beamishken

Probably a good idea to confirm manifold pressure before starting to alter pump settings

Glad you mentioned that... As I was going to mention that the turbo is defiantly boosting fine, Iv been tried different gauges all the same results.... By the time it reaches the manifold down in psi quite a lot, now I know the engine uses some of that. Which I want to now know is how much psi is on the manifold and how much boost is showing on there boost gauge. Still waiting on my new boost gauge to arrive.

Any advice anyone

beamishken · 04 September 2016, 16:07

If the spec says 1 bar then that's what you should see at the manifold under heavy load
I'd be fitting a Capillary guage direct into the manifold somewhere to confirm there is usually some form of blank or maybe a take off that you can either screw into or tee into
Check out this no on Ebay worth a fiver to confirm
130957652507

Atlantis.diver · 04 September 2016, 17:35

Quote:

Originally Posted by beamishken

If the spec says 1 bar then that's what you should see at the manifold under heavy load
I'd be fitting a Capillary guage direct into the manifold somewhere to confirm there is usually some form of blank or maybe a take off that you can either screw into or tee into
Check out this no on Ebay worth a fiver to confirm
130957652507

Brilliant buddy thanks for info, yes we have tried that today, a pressure gauge directly onto the manifold but they weren't the best gauges as the where air compressors and went to 100psi as they where to hard to read the psi on the gauge as it was quite small, but when we fitted and gave it full throttle it seemed like the gauge would create some some sort of vacuume rather than boost. Not sure what's going on as we are going to fit a new 1 this week. To confirm this.
Not sure what was going on 🙈