Sunday, June 14, 2020

Another Audi 2.7T Timing/Tensioner Service

This 2001 Audi A6 with the 2.7T engine came in for a misfire and "maybe a timing belt" with 65k miles on it. After inspecting the vehicle prior to doing any work, sending the customer a few pictures, we decided to go ahead and repair the initial misfire (coil driver failure) as well as do an upper engine reseal, chain tensioner pad replacement, and timing service. 

Shown here is how the front of this engine looked from a combination tensioner half moon seal leak and front main seal leak. 

Everything was just absolutely caked in oil 

Ton of oil dribbling behind the timing belt shields as well as INSIDE the timing belt shields. Over time this will deteriorate the timing belt. 

Fairly heavy front main leak - the timing belt roller pulley showing signs of internal disintegration. The rust powdered dust are the ball bearings wearing away to nothing. 

During inspection, found the passenger rear subframe mount bolt was missing from the car entirely. This was affecting alignment and overall drivability to the vehicle. Fortunately for the customer this was spotted and we were able to run a replacement bolt and bracket to make this car safe again. 

Slowly showing the cleaning process before everything is opened up for part replacement. 

Who would've thought aluminum parts would actually look like....aluminum. 

Camshaft comes out to replace the timing chain tensioner pads 

Broken and roached.

Replacement pad

Reinstalled and looking good 

After handling internal engine parts, I'll always dribble some oil or break in lube on the parts to prevent dry starts. 

Nicely degreased valve cover, valve cover hardware and gaskets replaced.  

Time to get the engine in time and get it all reassembled

Timing belt and all ancillary parts replaced

Bit overkill with my dating, but in the event the car gets an inspection for service sometime down the road, if these marks remain visible it's a confirmation of work done. 

Accessory belt installed and timing belt covers being reinstalled

Engine covers and charge pipes being reinstalled

Test fire the engine, immediately get soaked in trans fluid from a hydraulic line failing. I'm just glad it happened in the shop, not on the highway somewhere. 

All together, found some missing engine covers at the junkyard for the customer and installed them 

Engine bay cleaned up very nicely, hopefully with some better care the owner should have a trouble free vehicle for the next 70k miles or so, until the next timing belt service should be done if driven regularly. 

Ready to be picked up


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