2015 Chevrolet Tahoe
Mileage
64,993
Service Date
9/6/2024
Services Performed
- Check Engine lamp is illuminated and/or warning message is on the vehicle dash/information cluster. Perform evaluation and diagnostic testing including DTC pre and post repair scan, component testing, test drive, and vehicle inspection. Test drove vehicle confirmed the misfiring feel on it and there is also a popping sound while driving, when is at idle the sound is something like a vacuum or air leak. Removed oil filter to see if there are metal in it and found the bottom of filter with glitter like metal in it but nothing on the paper part of it. With scanner was able to confirm the cylinder 6 misfiring all the time, customer confirmed there are new spark plugs installed. Next was able to locate noise coming from top of intake between cylinder 6 and 4, went to fuel trims live data to see if they are off but they are not, sprayed with carbuclean to detect leaks bu none found, last smoke test intake system but same results no leaks found. Next is to get approval to remove valve cover to see if we have a lifter problem.
- After removing valve cover turned engine to look at rocker arms and they all moving correctly but the noise heard before still there like an air leak. Removed spark plug did a compression test on cylinder 6 and it has 125psi (100psi is minimum), did a leak down test and confirmed a leak under intake manifold in the head assy. There is two options at the moment replace head and do a lifter job or do a complete engine replacement.
- ADMIN FEE
- Drained and filled engine oil,Replaced filter,lubed chassis,Checked and topped off all fluids and inflated tires to specs.
- Waste oil and filter disposal
- VALVE LIFTERS – Remove & Replace – RWD All – [Includes: R&I Cylinder Heads.]
Andrew N. gave our service a 5 star review on 9/9/2024
