http://www.fd3s.cc/blown/

If the exhaust tone sounds like this and it starts like this, it's blown.

^faze gauges for the lose :rofl:

No wonder that engine let loose!

j/k

I had this problem. If I let the car sit for a day or two and then started it, it sounded like it was running off of one rotor and the vacuum would drop to around 10-11 in for a few minutes. I would just keep giving it gas until the excess fuel would clear out and the car would then run fine.

iceman4357, how does the car drive when it's warmed up? Did Mazda clean your injectors when they put in your reman?

Well those video clips dont say much imo, except for the boost gauge clip. The exhaust sounds normal to me, i guess i havent been much around rx7s long enough to determine the difference but my exhaust sounds like that.

In fact, my exhaust sounds the same the day i brought the FD home, and that was 2 years ago. The only thing that acts funny is the cold start. Vaccum gauge shows 15in and it stutters and shakes unless i gas it a bit for about 1-2 minutes, then it evens out and idles normal with 18in vacuum.

But i wont know for sure until i pull/replace those plugs.

Probably the plugs. with that kind of vacuum i very much doubt it's a seal.

you think the sound of that exhaust in the vid sounds normal? sounds like its idling like it was a bridgeport or pport, and that air hissing noise isnt normal either

I must have a hidden port i never knew about the past 2 years. Or maybe magically i been driving with no problems on a blown engine the past 2 years.

We all know a large majority of FD exhausts sound funny, like choppy i guess you would say.

Rich, seriously....
Come on, I know we've had our differences but you "doubt that's a seal"?

That's my motor prior to you rippin it out, that shit was broke.

Honestly, I know people who have never broken a motor are all like "it can't be broke", I was one of them, but trust me. Listen to the way my car idles and the way it starts, that's a dead give away. I've broken my fair share of motors and I can tell instantly.

Yeah that was custom huh? That's so freakin far from normal....

They're may advertise as rice, but the fuckers work. And they were free to boot and match my stereo and e-01 which was all I really cared about.

"we have our differences" because you owe me money. I busted my ass for you and you fucked me. don't even get me started.

talking about ulost's FD pulling 18 inches of vacuum, without being there in person to check it out and driving the car, i say again, i doubt it's a seal. just check the compression and be done with it. hell, ulost, you live right near me. I will be happy to look at the car if you bring it up my way.

Rich

Sounds awesome. Will do that if i need help.

Im pretty scared actually cause i think it may be my "time" and if that happens, i can say goodbye to the 99spec front with paintjob i was planning to do. So hopefully its not the engine.

On a side note, i had to start the car today just out of curiosity and it didnt do it. I started it in 1st and it idled normal with 17in. Then when the engine got warm (about 8-10 minutes), idle dropped to about 750-800 and the vacuum was 16-17. Then when i turn the fans on manually, gauge showed 18in at 1k rpm.

Mind you i have a pos autometer gauge but still, i hope those numbers are good.

those #s sound pretty decent for a motor with some miles on it. Is the vacuum nice and steady given a constant rpm?

Yes

Except that one time that i started it last week where the idle was funky as hell upon startup where i had to gas it to keep it from stuttering even though it was still jittering with my foot on the gas, the idle and vacuum is normal after like 1-2 minutes.

I really dont know what happened on that particular day. Maybe the humidity? But idk, in the summer, i never had this problem. Only in the winter where i have to gas it a bit for the first 20 seconds.

Im gonna do the plugs this week and maybe the fuel filter soon after. I cant take any chances. Maybe i can prevent something drastic.