Question about GMC Cars & Trucks
Describing a turbo as gone bad doesn't adequately describe what happened to it and why. A turbo is a very strong and reliable bit of equipment that will give long service as long as it isn't abused. Assuming you didn't abuse it there will be a reason why it failed and it is important to discover the reason and if possible rectify the fault before or during the turbo replacement.
When replacing a turbo it is best practice to change the engine oil and filter and verify there is a good supply to the turbo and the drain back into the oil pan is clear. The intake must be checked and thoroughly cleaned of any and all foreign objects along with all the high and low pressure trunking and the intercooler. If the old turbo broke up it is important all the bits are found - because if part of the compressor is missing it could have been ingested by the engine or is perhaps lodged in the manifold or a port waiting to cause further expensive damage and inconvenience...
If the turbo went bad because of bearing and seal failure there could be quite a lot of oil in the exhaust system. If there is, it can take quite a long time for it to disappear. If you analysed the reason for the turbo failure correctly and fitted the replacement using best practice and the engine is running ok, you can be confident the smoke and oil drops will eventually clear. You should of course confine your driving to quiet country roads until it does.
Posted on May 17, 2017
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Posted on Jan 02, 2017
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