Is an RX-7 rare?
RX-7 rarity Depending on whose numbers you trust, Mazda sold roughly 13,879 examples of the FD RX-7 as 1993, 1994, and 1995 models. Of these, the rarest of all are base models equipped with an automatic transmission—just over 500 were built—as well as the 452 R2 performance package models (more on those later).
Is there a problem with the Mazda RX-7 ignition?
This pattern is from a 1988 non-turbo RX-7 with about 82,000 miles. It had a very poor idle, and the engine acted like it had a miss under load. Both G and Ne are critical inputs; they should be checked if one suspects primary problems or injector trigger problems.
Where are the leading plugs on a Mazda RX-7?
Both leading plugs fire together, even though the rotors are 60 rotor degrees apart or 180 crank degrees apart. The two trailing coils are mounted in the LR corner of the engine compartment. This is not a typical distributorless system. You’ll notice that there is only one IgT signal sent to the trailing igniter from the PCM.
What does eccentric shaft on Mazda RX-7 mean?
The eccentric shaft has two offset eccentrics (one for each rotor) mounted 180 degrees apart. This shaft allows the rotors to move in the shape of an epitrochoidal curve. Figure 3 does a nice job of showing the relationship of the two rotors and how they go though the four combustion events. What does this all mean?
Where are the trailing coils on a Mazda RX-7?
The two trailing coils are mounted in the LR corner of the engine compartment. This is not a typical distributorless system. You’ll notice that there is only one IgT signal sent to the trailing igniter from the PCM. Well, how does the trailing igniter know when to fire each coil with only one signal?
This pattern is from a 1988 non-turbo RX-7 with about 82,000 miles. It had a very poor idle, and the engine acted like it had a miss under load. Both G and Ne are critical inputs; they should be checked if one suspects primary problems or injector trigger problems.
Both leading plugs fire together, even though the rotors are 60 rotor degrees apart or 180 crank degrees apart. The two trailing coils are mounted in the LR corner of the engine compartment. This is not a typical distributorless system. You’ll notice that there is only one IgT signal sent to the trailing igniter from the PCM.
The eccentric shaft has two offset eccentrics (one for each rotor) mounted 180 degrees apart. This shaft allows the rotors to move in the shape of an epitrochoidal curve. Figure 3 does a nice job of showing the relationship of the two rotors and how they go though the four combustion events. What does this all mean?
The two trailing coils are mounted in the LR corner of the engine compartment. This is not a typical distributorless system. You’ll notice that there is only one IgT signal sent to the trailing igniter from the PCM. Well, how does the trailing igniter know when to fire each coil with only one signal?