Ive got a 13b series 4 rx7 needs seals done

The rotary is basically a 2 stroke engine and a restricted exhaust will affect power. If it has a bad exhaust leak it also affect power. If the apex seals on the rotors are worn out, the engine will lose compression and be down on power as well. There are other symptoms of worn apex seals. A link to diagnosing problems with apex seals -

Signs of Worn Apex Seals on Rotary Engine

its not hard at all. as long as your good with your hands. and know the basics of your rx7. other then that everything bolts in. you just need a turbo driveshaft for sure. or they sell a custom driveshaft on mazdatrix.com so you can keep your N/A differential.

sounds like you may have a leaking fuel injector. put a fuel pressure gauge on it and watch the pressure with the key on and with the vehicle sitting for an hour with the key off

ALL RX Engines are a 6cylinder as they have 2 triangle rotors with apex seals and 4 spark plugs but both rotors in both cylinders fire 3 times each and you have 2 rotors 2x3=6 ..Now if you are running on 1 bank which is 1 rotor then the other rotor isent working due to either the RED rubber seal band on either the front or centre housing OR the centre housing or the rear housing, has a leak and it must either be water or oil UNLESS its in the inlet manifold gasket leaking air in or the plugs on that rotor front or back , if the plug gap has closed up or oiled up .as there isent anything else i can think of .which could cause it.
Ihave built a few of these RX motors and they are without a turbo a lovely engine and go like s--- of a shovel get it going and dont get booked for speeding.. Let me know how you get on Ron

www.onlinefreeebooks.net/pdf.../mazda+rx7+repair+manual/

I would just replace the APEX seals because they are cheaper BUT unless you know alot about the rotary i wouldnt take the motor apart your self i would take it to someone and have then do it because the rotary motor is very tedious and everything almost has to be perfect.

public library...Chilton or Haynes auto repair manuals or collisionrepairadvice.com


many of your questions can only be answered when the engine is apart and after visual examination.   Sorry I can't help more.

A large rubber hose feeds air to the large block with "RE-EGI" cast into it. Between that intake hose and the RE-EGI block, called the dynamic chamber, is the throttle valve. You can adjust the idle speed by adjusting a screw in the top of the throttle valve to 800 rpm.

I tried a Solution used from a previous posting... The automatic transmission fluid, (ATF), trick.
After doing everything in the mainianace manual, without a positive outcome... I tried it..
3 capfulls in each trailing spark plug hole... but it must be after or just after the apex went past the hole...
remember turn the shaft manually until the apex passes.  Also remember their are six apex seals, 3 on the front rotor and 3 on the back, thats 18 cap fulls total.  Don't worry if some drips or pours out after putting it in the spark plug hole.  I did it with a med seringin.  but be careful the end could break off in the plug hole.(don't ask) Just make sure you do all six just after each apex.  Then take both leading plugs off and spray them with starter fluid and put them back just after you spray them.  This, I was told, was to make sure the car fires on the first start.  IT works.....
This is also a trick after having starting problems when the car floods.......
That why I waited so long to try it,  I did need it for flooding.....
This swells up the seal... they got dried out from sitting at least four years... ATF soaks into them and
helps the compression...
   
 

hey you'll have to do a full teardown of the engine to replace apex seals