RX7Club.com - Mazda RX7 Forum

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-   2nd Generation Specific (1986-1992) (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/)
-   -   After emissions delete, no idle. Rx7 fc turbo 2 s4 (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/after-emissions-delete-no-idle-rx7-fc-turbo-2-s4-1066547/)

nbjeff 07-01-14 09:39 PM

So should I run a hose from the bac to the tube connecting the back of the MAF to the turbo?

satch 07-01-14 09:48 PM

I don't have a turbo but if you look in the FSM you'll get the idea. The large tube coming off of the AFM runs to the throttle body. Somewhere along the way there is a plastic elbow which is found at the bottom of the intake tube. A rubber hose should be connected to this elbow. This is what feeds the BAC. If you use the advanced search feature and look for turbo BAC pictures you'll see how it connects.

nbjeff 07-01-14 10:25 PM

Okay at one point I believe that the bac was connected to the charge pipe that was on my car before I put an aftermarket bov on. I'm pretty sure that's where it went. I will try making a connection somewhere in there

nbjeff 07-03-14 09:21 PM

So. Bac connected to intake. New variable resistor that I found off of a junkyard fc. And it's not starting or idleing or anything still

satch 07-03-14 09:46 PM

Defllood the engine. Also prove that you have spark, fuel and no vacuum leaks. And about putting the prcv back on.

LunchboxCritter 07-03-14 10:28 PM

New plugs after you get it un-flooded.

nbjeff 07-04-14 06:22 AM

Alright so I got it running but in order to keep it alive I had to floor the gas pedal. And I was only around 2k rpm. Again tons and tons of smoke and oil was coming out. Left it doing this for about two minutes until my shop completely filled with white smoke and I just about suffocated. I figure that if I just run it like that. That eventually all of the crap or whatever is in the engine will eventually work it's way out. Am I right? It almost started to idle but it died shortly after. Then I couldn't get it to start again all night. Any suggestions now?

satch 07-04-14 08:47 AM

Check for vacuum leaks and check the AFM.

nbjeff 07-07-14 02:36 PM

I've checked for vaccum leaks. I've checked the afm. And absolutely nothing is working at all now. My car just sounds like it's giving up

barkz 07-07-14 03:39 PM

got a buddy with a known working AFM? and other parts? start swapping working stuff and see where your issue is

nbjeff 07-07-14 04:35 PM

Pulled my spark plugs and I am beyond flooded! Fuel was sitting on my plugs.. And no I have buds with fd rx7's but no fc's

nbjeff 07-07-14 04:41 PM

And now a ton of fuel with what looked like oil dumped out of my car... Great. Any ideas on what that's from? I'm going to tear the intake off again and see if a fuel line blew or something

barkz 07-07-14 04:48 PM

leaky injectors

nbjeff 07-07-14 05:19 PM

I just bought ones off of ebay that we're flow tested and I pulled off my intake and there is no fuel under it. So it all came out my spark plug holes when I was attempting to deflood it. But then why would their be oil in my fuel? Ugh this car

nbjeff 07-07-14 10:11 PM

I've spent the entire day unflooding and attempting to start. Searching for vacuum leaks. Poring ATF and marvel mystery oil into my housings via the line above my bac (seperates it 50%/50%) and with all of this being done nothing is working... Nothing at all....

barkz 07-07-14 10:15 PM

Have you tried deflood then starting with only ether no fuel? And do you still have the omp?

nbjeff 07-07-14 10:21 PM

I do still have the omp and I didn't understand what you were saying with starting it with fuel..

satch 07-07-14 10:30 PM

A spark plug covered in fuel or fuel and oil is a fouled plug so you'll have a rather hard time starting the car. When you deflooded the engine did you immobilze the fuel pump? You can try starting the car by using a second or two at the most of starting fluid sprayed into the air intake cowl after the pump has been deactivated. If the car starts up briefly then dies you might try the spray one more time before activating the fuel pump and trying to start the engine once again.

nbjeff 07-07-14 11:05 PM

When I de flooded the engine. I pulled both the egi fuses, I also tried pulling the yellow plug underneath the pod filter, and eventually taking out the spark plugs and cranking it until all if not most of the fuel vapor was expelled. The egi fuses were pulled durring all of these events

barkz 07-07-14 11:52 PM

so with that fuse still out, put your plugs back in and have a buddy spray starting fluid while you crank.

nbjeff 07-08-14 12:56 AM

Alright. I'll try it tomorrow. Just on the air filter right?

satch 07-08-14 07:19 AM


Originally Posted by nbjeff (Post 11764612)
Alright. I'll try it tomorrow. Just on the air filter right?

Spray goes into the air intake. All fuses installed and circuit opening relay pulled to deactivate the fuel pump.

welfare 07-09-14 11:15 AM


Originally Posted by j9fd3s (Post 11761418)

this is gong to cause trouble, the ECU will be confused when it blows off, you should remove, and put the stock one back.

so that's where those fireballs have been coming from!

nbjeff 07-10-14 03:49 AM


Originally Posted by welfare (Post 11765447)
so that's where those fireballs have been coming from!

Fireballs good! 👌

clean87 07-13-14 07:03 PM

you got new injectors are they the right impedance? 87 had some high and some low impedance


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