Q: Smoke from exhaust still after new PCV and turbo

asked by on October 12, 2016

Still got a white or blue smoke from exhaust after turbo failure. Valve seals replaced, PCV replaced, turbo replaced, coolant level has no drop. Head gasket replaced anyway. Have codes P0015 "cam retard" even after PCV dipstick has slight smoke still coming out but has negative pressure with glove test

My car has 150000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in. I am sure that you have driven your car far enough (since repairs) to rule out residual oil in the exhaust system. The P0015 "cam retard" code may be a cam sensor, oil control solenoid or actuator issue. There is also the possibility of cam timing was set-up incorrectly. The real concern for me is the fact you have some engine blow-by and exhaust smoke. Although, it passes the glove test at idle, it may not pass under load. Check to see if blow-by is present under load. If there is, the possibilities are piston and/or piston sealing rings failure. A retarded exhaust cam could cause blow-by and set codes. The continued exhaust smoke, along with blow-by, leads me to believe lower end issues. Sometimes when cylinder head work is done on an engine with higher mileage, piston rings fail. Here at YourMechanic, we can have a technician come to your home or office to inspect and diagnose this issue for you, and make or suggest the necessary repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Car leaks oil when turning

Massive oil leaks are pretty easy to find. You’ll have to clarify "when you turn." Do you mean turn the steering wheel? If that’s the case it sounds like a pressure hose for the power steering. If you mean the...

Car won't start and clicks when the key is turned

Hello - you may have already diagnosed the problem yourself - well done! By that I refer to your comment that if you jiggle or bang on the shifter, it sometimes makes the difference in starting or not. The neutral...

engine dies after warming up

There are several components that can cause this problem. You are correct in thinking one could be the ignition system. Heat from the environment or the engine will cause the coils to expand, and not allow for the connection to...

Related articles

A Buyer’s Guide to the 2011 Volvo S40
When When you think of Volvo, safety undoubtedly comes to mind first, and that’s exactly what the 2011 Volvo S40 is all about. Of course, it’s also comfortable, refined and features a pretty high-performing engine, to boot. You might actually...
5 Red Flags That Your Car Needs Immediate Attention
It It isn’t popular to think about, but you should be prepared for vehicle problems. Vehicles are designed and built by people, and they are only as perfect or flawed as the people who build them. That means sooner or...
Can Exhaust Get Into a Car's Interior?
There’s There’s a very simple answer to the question of whether or not exhaust fumes can ever get into a car’s interior – yes they can. This happens more often than you might think, and it’s never a good thing....