Man, I'm completely at a loss here. Almost every single time I start up my 87 TII, it starts REALLY rough and shakes and shudders because it's only running on one rotor when it first starts up. Sounds just like an apex seal is blown in 1 of the rotors and that 1 rotor is getting no compression. It also backfires loudly and basically sounds like an old piece of **** lawnmower, and it sometimes HUGE amounts of white/blueish smoke comes out while i try to rev it to make it go back to normal again. After about 10 seconds of idling and revving it easily, it clears out and runs on 2 rotors normally again!?!? The smoke magically disappears and it still boosts hard and goes straight up to redline with no problems. My mechanics checked out my fuel injectors, and they said that the injectors are in good shape. Im at a loss, does anyone have any advice or suggestions on why my car starts up on 1 rotor and then goes back to normal after 10 or 15 seconds of idling? This 1 rotor startup is really starting to scare me, everytime i think i blew a seal when it starts up like that, but then it goes right back to normal running condition. WTF is going on here??

 

OK, Im not 100% sure about this, but since the car was flooding a lot before it was starting only on 1 rotor, could it be that maybe my spark plugs are fouled up badly from the leaking gas in one of the rotors and its making it not fire when I first start it, and then after the plugs warm up a little bit it goes back to normal? Before this, it wouldnt start on one rotor, but it would flood a lot when I tried to start it when it was hot, i would let it sit for a while to cool down, and then it would start again, but only on one rotor. The difference now is that it doesn't flood out anymore, but it will just start out on one rotor almost every time I try to start it, whether hot or cold. BTW, the car wont even think about starting unless I floor the gas pedal while it is cranking. Does this sound like a slowly dieing engine or simply bad fuel injectors???

 

So can anyone give me some advice with this problem?? I have no clue whether my engine is on it's way out or if it's just a fuel injector problem. Please help!

 

I had T and R Racing check my fuel injectors. What they did was they took out the intercooler and intake manifold and when they got to the fuel line they disconnected one of the coils so it would crank but not turn over completely. They let the injectors shoot out gas while the engine was cracnking and then stopped, and Im guessing that they checked to see if any more gas dripped out of them after they made the injectors spray fuel. And after they did it a few times they told me that the injectors were fine and that they weren't leaking. It still floods out occasionally, but they installed a fuel cut switch so I can un-flood the car easily. But the real scary thing is that almost every time I start it whether it's hot or cold, it starts up on one rotor, but then goes back to normal after idling a little. Yesterday it had to sit and idle for like 2 minutes until it went back to normal, that scared me a little bit.

 

That theory would work, but the only problem is that it starts on 1 rotor when the car is hot as well, so if that theory was true then the engine would be sealed enough to make it start normally when it's hot, but it doesn't. I also get a lot of smoke at high revs. It looks like possibly a mix between blue and white, and a lot of it, but it only lasts for a few seconds. It seems to happen not right during Im at a high rpm or at hard driving, but JUST AFTER a high rpm, coming off of boost. Basically what Im doing is I'm trying to sell my car ASAP, and I obviously can't sell it if it starts up on 1 rotor.

 

Dude, I feel you 100% on this. All Im trying to do is figure out how I can fix this problem so I can just sell it as is. Im looking for an old school(90-94) TSI AWD Eagle Talon instead because they can be made to be crazy fast just like TurbooII's can, but I think the Mitsubishi 4G63 is a solid powerplant to handle extrememly high boost levels and a lot of horsepower. Don't get me wrong, I will always like RX-7's but I think that rotary engines get too troublesome when you try to crank out more horsepower from them.

 

Check your fuel system. If one of our injectors is leaking badly when we shut down the car, then the gas inside the one rotor might burn away after a little idling, which could be why it starts on one rotor but then goes back to normal eventually. My mechanics checked my injectors, but I think they check them in a half-*** manner. First Im gonna try running a few bottles of the strongest fuel injector cleaner I can find into the gas, and hope that maybe that will help things a little. Then Im gonna take out my plugs and clean them off. It could be that maybe the plugs are constantly being soaked in fuel when it floods out so maybe they arent working too well anymore. Im gonna try these things and see if they help any. But if I still can't stop it then I might just go ahead and get 4 brand new injectors, I know this will be expensive but what else can I do.