i was driving my rx7 today and going down the road let off the gas an push the clutch in and it died?? tried to start it the motor was cranking but wouldnt start was at a roll so i jump started it and it ran but ran ruff ?? any one have symptoms what might have gone out??

 

Check all your vacuum lines, make sure one didn't pop off. If you can't see anything, do a quick compression check. Were you getting on it before it happened?

 

Sound like an apex seal went. My FB did the same thing one time. After I took the motor apart it had blown 2 seals on one rotor. Mine did it when I was on the Interstate going about 65 mph. It would only stay running if the drivetrain put pressure on the motor. Once I came to a stop it was very hard to start and I barely got it home.

 

thats like my worse nightmare...

 

how many miles does your engine have?

 

my engine has around 28,000 miles and i was at about 4000 rpms then let off pushed in the cutch rpms went down but kept on going down then died. costed in tried cranking it over wouldnt then pop started it ran ruff luckly i was a block from my house .. . i try to start it in my gradge cranks over dosnt start lett off then crank again , then try again and when i turn the key theres nothin no motor crank at all. thats why i think it is electrical and not a apex seal or 2 ???????

 

so is the motor turning over or what? Take your time and write slow.

 

well i turn the key the motor turns but dose not start , i let off then try agian same thing dose not start, then the 3rd time i try and when i turn the key there is nothing the engine dose not turn over and nothing to hear either .. . im hoping it is something electrical

 

Well, you've probably drained the battery by trying to start it over and over again.

Get a compression test done, not by mazda though.

 

i just tried again the batterie still cranks over i just do not understand when it cranks i let off try agian and there is nothing .. . if it had a broken apex seal would it start still just run ruff really ruff

 

A blown motor will start and run sometimes, it just depends on how bad it broke. You're car is most likely flooded now so it's not going to start whether the motor is good or bad.

 

Actually from Mazda is the only way to get a compression test done ... unless you have access to one of their 3 phase digital testers. For instance, I know my motor has good compression right now ... but smokes and idles rough, it's probably a pinched side seal from debris getting in there. But I can't tell that with my tester, with a Mazda one I could.

 

Well, take it to mazda and they will tell you it's blown whether it is or not.

 

Don't hate ...

 

Alright Giligan....

 

Track tonight?

 

so could it be the ecu needing to be tuned and flooded the engine or new fuel pump cloged fuel filter ?? or can you foul a plug if you run to rich .. . . or am im treating it like a two stroke??

 

Change the plugs ... rotaries eat plugs. Honestly, it could be a lot of things. Check your fuel pump, check spark. But of course there's a good chance it's engine.

 

thats the last thing i want is the engine to blow a seal, now a fuel pump , plugs, tuning an ecu not a $3000 bill

 

Ha, then you should have never got a RX-7 with a T78 ... blown motors are part of the cost of entry.

 

yeah, I raced tonight............ boosted 31 psi a few times. I've obviously got boost problems. My motors last.

 

31# is nothing.

 

You just jinxed yourself

 

I had the same thing happen and I managed to "blow up" my ssbv I am still waiting for HKS to send me a new one.

 

I've been jinxed for years......