I got a 88 RX-7 GXL non turbo, It will start up easy when cold and idle at like 2k rpms eventually it warms up and just stalls unless i keep the revs up then it won't, but if i just let it sit there and idle it will stall. I noticed when i drove it that it backfired alot when i was around 4k rpms and just deacellarating. It has very lil power. It struggels to get up to 100km thats in like 3rd if i shift into 4th it will start slowing down. Someone told me it might be my apex seal isn't sealing.I was thinking of doin the ATF trick but i haven't done it before. Any suggestions on what i should do or what you think is wrong with my rx-7 is much appreciated

Mike

 

You should get your car compression tested - it sounds like a blown motor to me, as well. Mazda dealerships can do it for $60-100. Get their numbers, and report back to us. Ignore whatever the dealership tells you, chances are that they're incompetent.

Brandon

 

I was just working on it and i noticed the person who had it before me had put the spark plugs in wrong he had two trailing plugs on one rotor and two leading plugs on the other rotor i switched them back to the right way i think with the leading on each bottom rotor hole and the trailing on the tops. i started it up and still ran the same ? Should i try the atf trick for a last resort before i swap motors, i got another motor but i don't want to hassel and swap them i want to just get this one goin right if i can.

 

you sure you put them back to the right spots?? I would do a compression check. running them on the wrong places could have easily blown it.

 

NO...no atf...atf is used as last resort if lets say your motor is carbon seized or something...if it turns and starts then there if no point in doing the atf trick..check the compression of the car first..it will tell you if you do need a rebuild (or motor swap)

 

the plugs deffinately were in the wrong place and your sayin that this could blow my engine. Also i noticed whoever had it before me just replaced the plugs and on rotor two top plug wasn't even firing it looked like new just a lil wet
but rotor 1 was firing and it had the leading plug in the top hole

 

mabe a bad leading coil


-Shawn

 

i'm goin to check my compression tommorow then post the results but yah i hope its just a bad lead coil.

 

yah its got no compression in the back rotor cyclinder but some in the front. What should i do now

 

Doh! Sorry to hear it.

I'd look into rebuilding it yourself. Go download the Factory Service Manual at www.fc3s.org, and pull that motor . Heck if two idiots (my buddy and I, both 17) can rebuild a motor, I'm sure almost anybody can

Good luck
Manolis

 

Swap motors.

 

i hope the motor i'm swappin is better.

 

sorry to hear that man

 

i don't understand how i can get up to 60mph + only running on one rotor ? Is that even possible
It takes a while to get there though like 15 seconds or more probably

 

Also it now idles at like 1100rpms smoothly but sometimes it surges a bit to like 900rpms and it starts shakin a bit then goes back up to 1100rpms.should i try the atf trick?

 

atf is only used when a) unflooding a extremely severely flooded car or b) trying to get a seized(carbon lock up) motor to turn..and even then i would recomend push starting it before doing atf trick...the reason why it works is because it helps build up compressiona and breaks down the carbon particles...if im wrong someone please correct me..

ps.. the answer to your question will more then likely be no.

 

some people do it to increase there power i'm pretty sure i read it on a couple of these. Why wouldn't it help your engine if it ran compared to if it didn't run?

 

might as well try.. nothing to lose if you are gona pull it out...

 

yah thats what i'm thinking. I got nothing to loose at all so yah its my last chance.