Should I cap them off and remove the spider?

I have searched and found mixed answers. Some claim a little smoke upon startup and some say no difference.

The only reason I ask is I have the UIM off for an OMP line replacement and heard the spider wasn't necessary.

Any input guys. Its going back together this weekend.

DJ

 

8 views and no answer yet.

Where are the gurus at tonight??

Gotta know pretty quick.

 

by spider do you mean your OMP + lines?
if so are you planing to run premix off the tank? if you are the remove the OMP and lines.

i personaly desided to tap the omp for premix injection.

 

No.

Removing the vacuum spider that connects the Oil Injector nipples to the UIM.
Under decel and light boost they are supposed to shut down the injectors to prevent smoke from excess oil burning. However if the vacuum lines are removed, they are always injecting regardless of vacuum/boost.

The oil injection lines are untouched.

 

i see what your talking about now,thats something i would like to know my self,its in my way of my primary injectors.

 

You heard wrong. If there was no need for it or no benefit from it, it wouldn't have been put there. Put it back on, or even better, replace it with a new set to avoid any problems later.

 

Elaborate on why 'I heard wrong' please.

If they inject the same amount of oil, regardless of RPM, then why not have them inject while the car is under low vacuum/pre-boost?

In theory, there would be MORE oil injected, therefore more lubrication/cooling for the rotors. I do not car about burning a non-measurable amount of oil every so often.

But then again 'In theory' Mazda thought of everything.

 

Damn I'm surly tonight.

 

This is completely wrong. There is always oil being injected regardless of engine load. Oil flow is determined by rpm and throttle position (on S4's) or airflow (S5). As revs and load increase, so does the amount of oil injected.

The air lines have no effect on the rate of oil flow at all, they simply provide air to help disperse the oil better. Air is sucked through the nozzle by vacuum in the chamber during the intake stroke; the air lines are simply there so that the nozzles suck filtered metered air from in front of the throttle. You could actually leave the air lines off and air would still be sucked in the same, but it would be unfiltered air that would cause a slight lean condition and probably a crappy idle. Capping them off completely so no air gets sucked in would lessen the effectiveness of the oil being injected.

So like I said, leave 'em on.

 

cant beat that! i will leave mine on.