i broke this nipple while installing new hoses. not part of the turbo sequential system and not pressurized. it is the blue one circled in pink and zigzagged in pink. the red circles are part of the same line but are no broken. what does the broken nipple control? if those other lines that are also blue are good is it ok to cap this off since it's not pressurized? what will happen if i just leave it?

also when i was doing the lines the hoses circled in yellow had been capped off. the system is still sequential. he had a manual boost controller on there. did it have to do with this? why would the previous owner have done this. what does it do and are there any benefits to it?
thanks in advance for all your replys

 

ok picture is not loading. would someone please give an email so i can send it to them and then they can post it or something? if no one does this go to this link http://www.scuderiaciriani.com/rx7/v...placement.html the broken nipple is the blue line on the 2nd diagram closest to the firewall. the capped lines were the pink ones going to the turbo precontrol actuator. it was capped between the actuator and the metal tubing that the line from the actuator goes to.

 

the capped one is pry for the automatic...

and if you are describing it right you broke a nipple off teh check valve for your pressure sensor....

 

Blue=Oil injectors... it can be vented but filtered is preferred.... other I'm not sure...

 

It is hard to tell from your description just what is involved, but from what your saying, ejmack1 I think has it right. Is the broken nipple on the little black box attached to the fire wall or is it at the check valve in between the black box and the UIM?

As to the second part of your question, I again cannot tell from your description what connections you are referencing but if he had a manual boost controller, the nipple on the right side of the wastegate actuator (gold spaceship looking thing) would be capped as would the wastegate solenoid (the one of the two solenoids at front of UIM on right). It is simply the poor man's way of making your boost settings variable and to eliminate restrictor pills (I believe). Your description makes reference, however, to the pre-control solenoid (the one on the left) which if correct means he was not using a manual boost controller but instead manually controlling the turbo pre-control settings.

 

it is the dark blue hose on the 2nd diagram on the link. the hose is the one closer to the top of the diagram. the nipple is under the turbo conrol solenoid and air control valve. it connects into the engine. are you sure it's an oil line? it looks like an air line to me. i don't think it's a check valve. since there are 2 of these going to the same line can i just cap one nipple and the other nipple (dark blue line that goes into engine just below it on diagram) abd still get accurate readings if it's the pressure sensor? sorry if i'm not being clear but im finding it hard to describe and i cant load the picture of the circled areas i'm talking about.

 

Since were on the topic, that line described as empty pipe, why would it even be there if it was empty, just wondering.

 

it's an air line for the metered oil injectors, IIRC.

did you break the nipple off on the block?

-b

 

if you look at the first diagram, you will see that the pipe is used for the auto tranny version.

-b

 

thats what i said earlier

 

These are the vacuum lines for your oil metering injectors. You must have those on for the injector to work properly. If you broke the nipple off (and I don't know how you did this because the injectors are brass), you will need to replace the injector. If I recall they are not that expensive, but you are only going to be able to get them through Mazda. The injector is threaded into the block so you only need to unscrew it (find a proper sized socket and extension). It passes through a bango connector for the oil metering lines. It is completely do-able, but I would sure like to know how you snapped that nipple off.