Originally Posted by olddragger

I dont think those nozzles have an opening on the very end--only on the side. Like Ash says the oil comes out the side, not the middle.
OD

Originally Posted by ASH8

S2's don't have vacuum connections on top of Nozzles either, internally they have a fine gauze filter, and a one way check valve.

Originally Posted by ayrton012

Actually the S1's nozzles have not got vacuum connections. As I stated earlier a lot of times that is a big problem if they get vacuum from their air intake side. The oil consumption will be very high, because the engine will sucks only oil without air from the nozzles.

Originally Posted by ayrton012

Where are those Shadycrew?

The air intake of the nozzle gets air from the intake hose before the throttle body (between the air celaner and the TB). Do you have vacuum there? Then your car has a failure!

Originally Posted by 9krpmrx8

Those are the oil injectors from a S1, same things as the pics I posted earlier in this thread.

Originally Posted by ayrton012

Actually the S1's nozzles have not got vacuum connections. As I stated earlier a lot of times that is a big problem if they get vacuum from their air intake side. The oil consumption will be very high, because the engine will sucks only oil without air from the nozzles.

Originally Posted by shadycrew31

There is vacuum on them it might not be manifold vacuum pressure, but its something.

Air pulls up on the internal check valve inside of each injector.

There needs to be vacuum pressure on each injectors for this to happen.

Originally Posted by MazdaManiac

This is incorrect and not the function of the check valve.
The air flow is forward, which relieves vacuum on the oil flow, which would otherwise reduce the amount of oil injected.

Originally Posted by ASH8

Yes to close/shut the check valve to stop Oil in Nozzle from going in the wrong direction when engine is at positive pressure.

]

Originally Posted by olddragger

It shouldnt be any diffence should it?

Originally Posted by ayrton012

Let see it again OD:

The oil nozzle receives the barometric pressure from the air hose to prevent the negative pressure from the engine being applied to the oil inlet. Also, a one-way check valve has been adopted to prevent oil from flowing out of the air hose side when the engine is under positive pressure.




1 Air hose side
2 One-way check valve
3 Oil inlet
4 Oil outlet
5 Housing side

Between the trottle's butterfly valve and the engine is vacuum. But there is atmo pres between the air cleaner and the throttle's butterfly valve. If there would be vacuum at the MOP nozzle's air intake pipe (1), the engine suck's out more oil from the MOP (3) than that is metering. With the atmospheric pressure on the nozzle's air intake (1), the engine's vacuum only sucks (4) the metered oil amount (pushing by the weak pressure of the MOP) and air from the air hose side (1).

Originally Posted by DocBeech

Just as I said I researched it. I didn't find a whole lot in automotive community. But I went to the AOPA forums, and a couple other aircraft forums I am registered on. I did find a lot of people having problems with not only carbon fiber, but with fiberglass fuel cells. They are having to switch to alluminum in places that have E10 or higher. Also I found information on people with fiberglass boats where the ethanol softens or eats through the boats who use the hull for fuel storage. They are also starting to show that valves break down when introduced to ethanol. Intake valves for one. They are finding corrosion and sticky intake valves. Sound familiar? They were finding trace amounts of parts of the fuel system in the intakes. They analyzed it and found out the ethanol had softened up components of the fuel system which began to redeposit on intake valve and inside of injectors. They are finding that plastics are easily disolved by ethanol then redeposited other places in the engine system. So basically from our fuel pump, to our SSV valve.

(Phthalates, or phthalate esters, are esters of phthalic acid and are mainly used as plasticizers (substances added to plastics to increase their flexibility, transparency, durability, and longevity).)
(GCMS - Gas Chromatography Mass Spectrometry )

"Phthalates are only sparingly soluble in water, however many are readily dissolved by ethanol. Whereas gasoline free from ethanol never picks up phthalates, when ethanol was introduced the very small ethanol molecules diffused into the fiberglass, filler and gel coat materials where they dissolved unreacted phthalates. Having been dissolved by smaller molecules, and almost certainly accelerated by osmotic pressure, some portion diffused back to the surface and was dispersed in the gasoline. Based on our GCMS results to date there are some other, presently unidentified, large molecules that were also leached out by the ethanol and similarly transferred into the gasoline."

"Since they are in solution, the phthalates and the other heavy dissolved molecules are able to pass through the fuel line filters. When the gasoline with ethanol evaporates in the carburetor the heavy molecules do not evaporate but come out of solution and are carried along in the air-fuel mix as an aerosol. When the droplets impinge on throttle plates and on the walls of the induction system they can collect as reported."

"Some of the molecules that impinge on the hot valve stems and under the crowns decompose to leave carbon powder and ash. Others, such as the phthalates that in general have exceptional high temperature stability, remain intact or undergo only partial decomposition and then act as the binder that holds together the carbon particles and ash as the observed"

Some of those should look very familiar

They are also having problems with one way valve systems like our oil injectors have. Basically the ethanol is capable of breaking down the plastic lines mazda chose to use. You can avoid this by making your own teflon lines. The plastic that is broken down in line, is not filtered and can clog the injectors.