StevenL5975

Hello,

so I ve been progressing with the new engine and I would like to pressurize the fuel system to check for leaks prior to putting the intake back in.

The FSM says to jump the Fuel pump check connector but is not precise concerning its location. So I ve been peeping on the forums and it says to be a yellow 2 pin connector located in front of the passenger strut tower. But on my car there is none. There is a connector but its white and has more pins then 2. Could someone please enlighten me on this subject ? I dont want to jump any connector at random and risking to fry equipment.

I have a 1987 S4 NA, its the European version if that makes any difference. We still have the dizzy cap and thermal reactor from the earlier FB for some unkown reason.

Here are some pictures attached before the restoration, please excuse the messy engine bay, its looking brand new now

satch

iTrader: (1)

Under the dash and just to the right of the of the steering column is the circuit opening relay (Yellow and Black). Plug has two rows of wires. Bottom row has two wires (one is solid Black and the other is Brown). These are the same two wires in the fuel check connector so jumpering these two wires solves the exact same thing.

And in your pictures the pressure sensor looks to be removed. The emission harness supplies this sensor which is the same harness which contains the check connector. It is usually hidden underneath the harness itself (Black rubber boot protects the connector).

StevenL5975

Thanks Satch,

so, jumpering the black and brown wire from unterneath the dash on the circuit opening relay will do the same job, I will give that a try. Right of the steering column, from looking below ? Its the relay/socket itself that is black and yellow right ? Just asking because I have no internet at my workshop and its a 90 miles drive, so I rather ask twice

Which pressure sensor are you refering to ? Where should that be located ?
Edit: Are you referring to the sensor that should be located at the pass strut tower bracket facing the front ? In that case there was never enything hooked up.

Could be they made a different harness for the EU version than for the rest. Considering they have a slightly different ratnest and vacuum system to incorp the dizzy cap I guess thats just the disadvantage of owning an EU RX7. FSM doesnt even list that variety

satch

iTrader: (1)

The emboldened part is all accurate.

The pressure sensor would be bolted to the passenger strut tower and the bracket looks to be there. It has a 4 wire plug and a vacuum hose which connects to it which runs to the manifold near the ACV. I've never seen an RX7 w/o the boost/pressure sensor but ...........

StevenL5975

OK, great I will crawl under there and take a look tomorrow.

As for the sensor, there is none on the S4 NA EU cars. The bracket is there but no sensor installed. I would have recalled it. I have 2 S4 NA FCs and never seen anything installed there. As I said its still running the dizzy cap ! You have to make your own ignition wires, the FB ones are too short and the FC ones obviously lack 2 wires

rotarynewb02

Hi Satch, I do have the emissions harness and yellow connector but for some reason the yellow connector is far to deep into the engine bay for me to get a jumper into without taking out all sorts of stuff. I am going to jumper the connector next to the steering column instead. Would you be able to provide some extra guidance on how exactly to jumper these two wires? Disconnect the white end and stick the paper clip into the holes on the white part of th connector?

rudynick81

if you can not get to the connector i would use the air flow meter to turn the fuel pump on. remove air cleaner lid take out air filter turn the key on reach into air box and push the flapper door open in the air flow meter. this will turn the pump on and pressurize the system. let go and the pump will turn off. done this several times on multiple cars