Well I didn't get the turbo back until the day before yesterday (Friday). 12 days from the day I sent it back to Kinetic Motorsport. I spent all Friday evening re-installing it but I did not start the car that night. Saturday morning, (under the advice of my tech at the Mazda dealer) I did a 'Carbon-soak" to clean out all the crap from the oil I had been burning. I used an AC Delco product called "Cleens". Basically you take the hose off the PCV Valve and (using a longer hose) stick it into the bottle, start the engine and suck it all out. It takes two people to do this as the engine wants to stall so one has to modulate the throttle to keep it going. When the bottle is empty, you shut off the engine and let it sit for a couple of hours, start it up again and rev it up to blow any remaining crap out the exhaust. I did this and after starting the engine, reving it for a minute or two, the exhaust cleared up and the car settled into a smooth idle.
I kept a close eye on the turbo assembly, checking to make sure all was tight. There were small leaks at the turbo flange on the exhaust manifold and also on the downpipe flange which I tightened and they seemed to go away. All appeared good.
(I should mention here that the last time I ran the car and had the oil leaking problem, I was also getting wisps of what appeared to be steam coming out of the Valve cover breather filter and also some oil. I thought that I would rig up a temporary "ghetto" catch-can on the breather this time, just in case it happened again. *
see first thumbnail*)
So then it was time for a road test. (Note that the car was without front clip and hood.*
2nd thumbnail* The car was fully up to temperature so I pulled it out of the driveway and drove down the street. Immediately there was smoke coming out the tailpipe. I thought that maybe it might be residual oil/carbon burning off and it would clear up, so I continued for a couple of blocks at moderate speed and revs no higher than about 3000. I got onto a sideroad with a gradual uphill grade and then the car really started smoking heavily. And then the oil mist appeared on the windshield again. I immediately pulled over and shut off the car, got out and sure enough, the first coupling off the turbo compressor had popped loose and there was oil all over. I'm feeling really ill at this point, but I had to get the car back home. I waited for it to cool down a bit so I could reach in and wipe the oil off of the coupling, clamps, pipe and compressor and re-attach everything. Once it was all back together I started the car, turned around and headed for home. The car ran horribly. It was sputtering and tried to stall several times, as well a smoking steadily out the back. I made it home and back into the garage where it now sits. I took the intake/filter pipe off the turbo compressor and sure enough, there was oil in there as well!
I am totally at a loss here. What is causing this to repeatedly happen? I know the set-up works, I ran the car for 5000 kms before the turbo seals first let go. Since replacing the turbo cartridge, nothing has changed to the overall installation, other than the addition of the .040 oil flow restrictor in the supply line. The oil return is clear. The oil level is normal. Is this just a badly assembled turbo that I have been cursed with? Should I remove it and send it back to Kinetic again? Any encouraging words will be greatly received...
Oh yeah, going back to the ghetto catch-can. It has about 1.5 tablespoons of a watery-yellow liquid in it.*
last thumbnail* Any ideas on what this is about?