Don't worry man, my balloon is completely intact. He posted a pic of his UIM on another thread, so I knew it had only three nipples.
Correct.

Without the solenoids, the hot-start assist and twin-scroll systems will not work. They're not there for decoration, they're what make these systems work.

Ambient temp has little to do with it (unless it's really cold). The hot-start assist activates any time the engine is started with coolant temp over 150degF and air intake temp over 140degF. This is when the engine has been running recently and is probably suffering enough heat soak to cause vapour lock in the fuel rails, so fuel pressure and idle speed are increased to avoid starting and idling problems. I've never monitored it for any length of time, bit I think this situation occurs a lot more often than most people think. Just look at all the "My car won't start when hot" threads. I wonder how many of those cars have no FPR solenoid...
Nope, my JDM S4 only has two nipples on the back, oil nozzles air bleed and primary injector air bleed. JDM engines don't have the vac line that closes the upstream secondary throttles when the engine's cold. Mazda Japan must have trusted RX-7 owners more than Mazda USA did.

 

Have someone spin the engine with the ignition key while you put your finger on one plug at a time. Only one plug should be out for each rotor. Pull the two bottom ones.

Your car is probably ok. Just a worst case scenario. Probably not worth doing if your car ran ok prior to the flooding.

 

Yo. Hot start is a lot of the time. Just that in Tx I figure what with the number of days in the high 90's and 100 degree days that there's going to be more of a problem than in Mn.

I can't get off my butt and read the manual....but I remember looking at this some time ago on the n/a, and It did indeed happen most all starts and lasted for if I remember right for about fifty seconds. It was a case of starting the car.....pulling the vac line off the fpr,....feeling for NO vacuum......waiting for fifty seconds and then ......vacuum would be there on the vac line forever until you shut the car down and started the engine again. I almost contradicted my first sentence...almost.

But if a person is having a hard time starting the car, as in can't get the car to start at all ....as in a flooded car.... a flooded car with a cold engine because it won't start......
.the fpr solenoid has little to nothing to do with the hard start. I only write that because rotaryrockstar mentions not being able to start his car. In his case the fpr most likely is not involved.

And about the allen plug.........since NZ's car does not have secondary injector bleed air....the allen plug must have something to do with the machining of the intake manifold passages.

 

OOooo.... Keep going you two! Husemoller and I are learning! This is so exciting!

 

So let's go back to the jpg atttached in one of the first posts. That has to be wrong for a series four. The part that I think is wrong...is where there is a line designated for the secondary injectors air bleeds. It does NOT exist on any of the three series four intake manifolds that I own. So does anybody have a series four that has that line/fitting?

 

Well... Did you see my thread about... "it Starter WOOT!"?
Anyway lastnight I was at Husemollers and he has now installed the Jspec UIM and it has only two nipples on the back like NZ said. However is old busted one was on the shelf and it had 4 nipples on it like the "dark" pic you showed me earlier. Do ya reckon thats what that top blocked nipple would be for?
This doesn't explain where the outlet would come from though, 'cause it came from the MOP injector plugs prior to thier removal right?

 

Ummmmmmmnoooooooooo. The oil injectors have a hose and they all gather together at the spider that rests under the intake manifold. The spider then has a hose that goes to the back of the throttle body and goes to the one large nipple or the four that are located there.

Of the four nipples at the rear of the throttle body on a series four..the top one is capped off.......the next one down goes to the primary injector bleed air.....the next nipple down is the large one for the spider that feeds the oil injectors.....and the last one, the only one that has a vacuum on it, goes to the green/white checkvalve that feeds the double throttle diaphram. That is for a stock series four car that has not been messed with.

 

bump.. keep this one going.

 

.

 

bringing back from the grave............

any update of diagrams, been searchng, I have the bac, egr, apv, acv, all blocked off, need an idea how to run the diagrams

 

Talk about back from the grave... I'm am taking a look at these lines again. I've had the car parked now for some time and it ran great... But guess what Hailers... It has had a hard time hot-starting and I'm starting to think I did something wrong with the FPR setup. I'm revisiting all this now. Wow, blast from the past.

 

I got some model paint and have been color coding my rat's nest as well as all the intake nipples. Kinda doing it for the detailing, kinda doing it for peace of mind. It also helps you work through why each line goes where it does.