ska3260

iTrader: (1)

I just had my engine rebuilt and when the block came back it seemed to be missing a part, which i found out to be just a normal thing when cleaning the engine b4 rebuild. The part seems to be some sort of air diffuser/grommet for the main injectors going to the block. I belive they are to help atomize the AF mixutre. I was told to just put some silicon hose in the place of these plastic-like parts and it should be fine. I did that it ran ok however after 1500 miles on the engine i put a wide band on to start tuneing it. WAY WAY lean, wouldn't even read on the gauge, It is a N/A with a street port, and a upgraded RP fuel pump. So if anything i belive it should be pig rich. Anyways looking for idea where to find those parts, thanks for the help

1987RX7guy

iTrader: (3)

Air diffusers can be bought from mazdatrix or the dealer.

ska3260

iTrader: (1)

kewl thanks, just ordered them up. How do you know what way the slant should be when installing them?

1987RX7guy

iTrader: (3)

Check the FSM for that bit i'm not versed in their positioning.

ska3260

iTrader: (1)

anyone else out there ever done this b4?
Thanks rx7guy for your help

buttsjim

In the TII, the slanted diffusers have a little positioning tab so that they can only go in one way.

ska3260

iTrader: (1)

i am thinking the slant would want to go slanted inwards to aid the flow of fuel...

RETed

The wideband is wrong.


-Ted

buttsjim

That makes sense. I forget how mine ended up facing, but I do remember that they were somehow indexed so that they wouldn't seat properly unless they were facing the correct way. I asked the same question as you when mine were on order; then when I went to put them in, the answer was obvious.

ska3260

iTrader: (1)

how would the wideband be wrong? I got everything installed and just like you said it was indexed with a white dot facing towards the engine/driverside with a lobe to keep it true. I got it all put together and fired it up, def. sounds diffrent. However i still have the lean problem at idle but once i put a load on it i am running good. Some how i srung a leak on or around my BACV i have to fix then i am going to take it for a cruise tonight. Thanks for your help.