94 Rx7 Fuel injector diffuser removal.
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Joined: Oct 2017
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From: Vista, California
94 Rx7 Fuel injector diffuser removal.
I pulled my primary and secondary fuel injectors out and got them cleaned by RC engineering and I was wondering if there was any trick to pulling out the diffusers underneath the injectors? They seemed extremely stiff and extremely fragile.
I know that the secondary fuel injector diffusers have an O-ring that needs to be replaced according to the FSM. Should I just replace all four diffusers while I have everything apart?
I know that the secondary fuel injector diffusers have an O-ring that needs to be replaced according to the FSM. Should I just replace all four diffusers while I have everything apart?
https://www.rx7club.com/3rd-generati...s-out-1070352/
I’ve never pulled them with the engine in the car. Honestly I think as long as you leave them alone there’s little chance for issue. And change them when the engine is apart.
I’ve never pulled them with the engine in the car. Honestly I think as long as you leave them alone there’s little chance for issue. And change them when the engine is apart.
YMMV, but I was able to get mine out with minimal drama.
The primary and secondary diffusers are a little different. I remember the wedge shaped ones for the primaries being really fun to get out.
The secondaries were much easier, as they had a lip that I could gently pull/pry on until they popped out.
For the primaries, you'll either have to find a way to push them out from inside the engine, or fashion a hooked shaped thing to gently pull them out with.
You have to be patient and careful taking them out, they can/will crack/shatter if you try to strong arm them, and that would be a bad time.
I don't think I had to do this, but if you clean the area, spraying some lubricant might help loosen them up. I think its the seal from the old orings that keep them stuck in there.
The primary and secondary diffusers are a little different. I remember the wedge shaped ones for the primaries being really fun to get out.
The secondaries were much easier, as they had a lip that I could gently pull/pry on until they popped out.
For the primaries, you'll either have to find a way to push them out from inside the engine, or fashion a hooked shaped thing to gently pull them out with.
You have to be patient and careful taking them out, they can/will crack/shatter if you try to strong arm them, and that would be a bad time.
I don't think I had to do this, but if you clean the area, spraying some lubricant might help loosen them up. I think its the seal from the old orings that keep them stuck in there.
As mentioned the secondary one will come out with a pryer, I would leave the primary one alone unless you have the LIM off, then you can just pop them out from underneath via the intake port. I have 2 extremely low mile secondary diffuser for sale if you are interested.
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