shamrock84922

Okay I have a 12a engine in my 1984 RX-7 my engine lost power all the sudden and i am backfiring alot. It still runs and drive but has not power its alost like the engine cant breath please let me kow if you have any ideas.

Jeff20B

iTrader: (13)

Leading ignitor?

mazdaverx713b

iTrader: (91)

i fear a blown apex seal or sode seal if all else is well

dbtolman

Got an 83 LE that did this while doing 80 down the freeway... Blown apex on my rear rotor. :-(

dbtolman

Got an 83 LE that did this while doing 80 down the freeway... Blown apex on my rear rotor. :-(

Fuel524

why does an apex all of a sudden just blow? that would really suck if that happened to me. it also sux that it can happen period. in comparison to a boinger what can an apex seal going on the rotary be compared too? what are some signs of an apex seal going bye bye. also if my leading ignitor would be bad my car wouldnt even idle. i took the wires off my plugs at idle and it just died.

rotaryspeedracer

A blown apex seal is akin to a hole in a piston...u lose compression on that tip of the rotor.

shm21284

It could be so many things, i dont wanna write it out, and i write long *** posts.
If it is a blown apex seal, get the engine compression checked by someone who knows rotaries (some mechanics will put ideas in your head like it's a piston engine....). If the apex seal is blown, you wont have compression on at least 2 sides of a rotor face. chances are when the apex seal went (if that's the problem, of course) it took out the other two. Then, you would have no compression on one rotor and compression on the other.

fatcow

About two weeks ago I was going from first to second gear when I think I blew the apex seal in my front rotor. I have a 85 with a 12a, I know that the rear rotor has compression but the first one has none, sucks but trying to get enough money together to get it rebuilt