Skip the auto shop - Our mechanics make house calls

Q: Smoke from exhaust still after new PCV and turbo

asked by on

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.

A: Hi there, thanks for writing in. I am sure ...

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Q: Electrical problems on a 'O4 Volvo S40

Yes I've seen that a lot on those things. A lot of them get a fuse box that's just flat out corroded. You will have to take the whole thing apart and clean it completely or go to a junkyard...

Q: Car stalls, but the problem can not be found

Hi there, thanks for writing in about your 2015 Volvo XC60. Intermittent concerns are by far the most difficult to diagnose. Clogged fuel filters often cause similar performance problems as well as poor signals from failing throttle position or engine...

Q: Vehicle Not Starting/Turning Over

Hi there. Regardless of what is failing in the starting circuit, with proper diagnoses, the problem should not run thousands of dollars to repair. It could be, as simple as, a faulty starter relay. The difficult part is, the problem...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.