I need to change the turbo charger on my cx-7 mazda 2009.. I have a replacement and any instructions would be great.... I had my warranty refused because I had last oil change 4.5 months and there was...
How many miles were put on the last oil change? Are you using a full synthetic oil? The amount of time the oil is in the engine doesn't really matter, it isn't like the oil has a 'use by' date on it. You also have to use a full synthetic oil as the heat in the turbo will 'cook' anything else. I go 5000 miles between changes on my turbo car and it isn't even water cooled like your turbo is. If you didn't go more than 6000 miles on the last oil change, I would demand arbitration so your case can be heard by a neutral party.
I haven't had the opportunity to see a CX7 in person but looking at the pictures, the turbo seems easy enough to reach. You'll have to drain the coolant and you may want to drain the oil as the level could be high enough to get out of the return tube coming from the bottom of the turbo. The bolts may be hard to remove from the exhaust but can be made easier by heating up the head of the bolt with a small torch, of course be careful not to set anything on fire. Since the turbo is a self-contained unit, there isn't anything to worry about falling out of getting out of place during removal.
I put together and installed my own turbo kit into my Escort about 6 years ago. I had a Garrett turbo that had a bad housing and even after 4 years of hard driving, the shaft never split. I put a cheap china turbo in there and it hasn't had any issue. Even if you went 10,000 miles on an oil change I can't see how that would cause the shaft to break. If the sludge built up to the point to stop the turbo from spinning, it wouldn't break. About the only thing I can think of that would make one break is improper balancing. Maybe that could happen from sludge, but I can't think of a way for it to happen. You really should get a copy of the entire warranty terms and see if an extended oil change can void your warranty. You should also exhaust all possible options before doing this yourself as if you do put the turbo on it, your warranty is definitely void. You typically find sludge in a turbo for a few reasons. A failed PCV system would cause the engine crankcase to become pressurized and that would coke up the oil. The turbo shaft seal can fail and force oil into the compressor housing and exhaust housing and then it would cook there until it became thick. The turbo cooling system can fail and the oil would cook each time you turn the vehicle off and cause it to coke up which would leave sludge. Of course, using anything but full synthetic would cause sludge no matter how well the rest of the system is working.
I realize I don't have a step-by-step for you to replace the turbo so if you to refuse the service and seek advice elsewhere, I won't hold it against you. But, I still think you should at least go to arbitration before you attempt this yourself as to protect your warranty. Just think, if your engine fails for some unrelated reason, they'll say it failed because you put the turbo on it.
Jan 30, 2012 |
2009 Mazda CX-7