Started a month ago and getting worst,when im staring the car seems that only one rotor is working,seconds after the second rotor follows with big cloud of white smoke coming out the excaust and rpm going up and down.Few minutes later(after is heated)everything is normal,no smoke,rpm stady,both rotors working smoothly.The story is repeating every time i stop for a few minutes .Comprassion is ok in both rotors,turbins where rebuild a month ago.Do you thing that it might be an injector driping causing the car to float???
I dont whant to believe that its an o-ring faillure,(the smoke smells petrol & oil not cooland)
Any ideas????????????????????????????????????????????

 

Could be an oil or coolant seal failure. Try pulling the spark plugs and see if they have any residue on them (either oil or coolant).

 

I will do that, now that im thinking it you might be right,last days i had to add coolant many times and with no obvious leak from a hose or else,but a coolant seal failure would nt have the specific anti-freeze smell in the air,or gases coming up the capacity tank????????????????
And if this is the cause of the problem what should i do ??????????

 

Whether its a coolant seal or oil seal failure, both would require an engine rebuild to repair.

For a coolant seal failure, you can have your coolant system tested for Hydrocarbons. That is usually the best test to do if you can't determine if you really have a failure or not. Pull the spark plugs out before a cold start and see if you have any fluid on them.

 

First i wanna thank u for taking the time....and after, i have a few more ques.
You said i have to rebuild!!!just like that???The engine has 45k, and beside that problem runs better than fine ,is there any other sighn??? Is it safe to use or i will cause bigger problem ??If i rebuild now(with the engine still running) what do u thing i should replace??(will i need to replace housings too??)

 

I gave you two things to do to check to see if you have a coolant seal failure. You shouldn't do anything else until you have verified those things.

As far as what you should have replaced when rebuilding; those are questions to ask the person who will be rebuilding the engine. However, before going there, verify that you need a rebuild first.

 

Checked the car this morning,engine seems to be ok, no oil - antifreeze remains on the plugs or hydrocarbons!!!!
found the coolant leak!!!what next ??any idea???

 

Anti-freeze is or isn't on the plugs?

 

[QUOTE=Mahjik]Anti-freeze is or isn't on the plugs?[/QUOTE
No trace of oil or antifreeze..

 

So what leak did you find?

 

The hose under the radiator was loose..leaking coolant

 

Ok, so you fixed that leak. Did you have the car's cooling system tested for hydrocarbons and/or pressure tested?

 

Did that too..still nothing

 

Sounds like the problem I had. In the beginning the idle is ruff and engine is shakey. After the "2nd Rotor" goes on, the cloud comes out and its smooth correct? For me after like 2 months of doin that, car wouldnt start up right away (15mins- an hour) after driving it. My coolent seal broke and I needed a rebiult. My motor was rebiult 30k ago at a shop in LA.

 

I just made a post on this exact subject and if you think about it, then you will know your answer. WHERE IS THIS COOLANT GOING??? If there isn't a huge puddle on the ground then it's got to be going somewhere. I did all the hose check, and recheck things, new caps, and buzzer still went off every three days. Then it was everyday and now it's twice a day and I KNOW THAT IT NEEDS AN ENGINE. I'm in the process of putting together one right now. Mine still doesn't smoke in the morning, but let it sit for about an hours and it's hard to start and the smoke rolls out, but it still runs strong. It's like a blown head gasket, but the BIG difference is that you have to pull the motor and do a complete rebuild to fix it where in a piston world it's just a matter of taking ONE of the heads off and replacing it. I'm looking at the stage III from www.rx7world.com with add-ons it's going to run me around 4k. Hate to have to be the one to break it to you, but I did't want to believe either!!!!!

 

Looks like a broken water seal my friends but the thing is that i did all the tests and all where negative, did a compression test,cheked the sparks no remains on them,cheked for hydrocarbons,and i did found a leak of cooland fluid.My mechanic is certain that is not the engine, he things its something electrical or one of the injectors...