ok so I have just imported a 98 RB direct from Japan.
It starts first pop and pulls fine untill around 4-5k rpm which is when looses power and miss fires.
Being an import I don't know anything about the history of the car.
When it first arrived it wouldn't start due the plugs being fouled up, it now has new plugs and has had a general service but still miss fires.

Is this a common issue with the RX7's? Any idea why its doing this.
I'm taking it back to the mazda garage wednesday week to get looked at, but just wondering what I could be in for.

 

Did you install the plugs yourself? Are the wires all connected right and in the right firing order?

 

Plugs and full serivce was done at mazda garage.

 

What is your boost pattern? 4500 rpms is when the second turbo comes online. Sounds like it's not coming online at all.

 

Doesn't have a boost gauge sorry.

 

Should probably say the car is totally standard, has a turbo timer but thats it.

 

Not going to be able to help you much if you can't tell us what your boost pressure is. These cars are dogs without boost.

 

are you using a fuel management system? maybe your map is off

 

am also in the same boat as you, i have checked mine and seem to get proper fuel pressure, boost seems fine. am in the process of checking my coils, leads and plugs.

also check tps(mines within spec).... let me know if you succeed in fixing this.

i am in howick.

 

Step 1: Buy a boost/vacuum gauge. Without one, you are pissing in the wind trying to fix a boost related problem.