Audi A4 Timing Chain Tensioner Install
- 2006 Audi A4 Timing Chain Tensioner
- Audi A4 Timing Chain Kit
- Audi A4 Timing Chain Marks
- Audi Timing Chain Tensioner Recall
The B6 & B7 S4 4.2 liter engine utilizes a chain driven timing system which is located on the backside of the engine facing the firewall. So, service position on a B6/B7 S4 does not mean just removing the front clip, it requires engine removal unlike the older 4.2L V8’s found in the A8, A6 etc. The repairs or replacement must be performed by an authorized Audi or VW dealer if the engine was damaged or failed directly due to the timing chain or tensioner within the same 10-year/100,000.
- Audi A4 Timing Chain Tensioner Install Dodge The #1 piston will again be at TDC and the cam gear marks should then line up. This establishes the correct relative positions of the crank and camshaft and gives you a target alignment after the new belt is installed.
- From 1994 to 2001 all Audi A4's have a timing belt. 2001 - 2006: For the 2001 to 2006 models, the 4.2 v8 has a timing chain and the rest have a belt. 2.0 TFSI A4 models and the 3.0 V6 have a timing chain. Audi A4 This entry was posted in Audi, Audi A4, timing belt or chain on March 4, 2017.
- Here is Part 2 on how to remove the camshaft chain tensioner gasket and the half moon seal on a 1998 Audi A6 2.8L engine. This procedure should help you if y.
DrPeter
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Here is a quick tip for checking the Audi/Volkswagen 2.0L chain drive engines for proper camshafts to crankshaft timing.
- There are known chain tensioner failures, see -- > How The 2.0T TSI Timing Chain Tensioner Fails
1) Verify the number 1 piston is at TDC - (Top Dead Center). You will want to remove the #1 spark plug and verify the piston is all the way up, because the timing marks on the balance/cover could be off. - Yes it is possible to complete a repair without the special timing tools on the first try, I have personally done it, however, the special timing tools will help you so that you do not have to do the job twice.
Note: There is a paint mark at the 12 o'clock position of the crank pulley and a grove at about the 4 o'clock position.
- The timing chain cover has two marks, one at 12 o'clock and one at 4 o'clock, make sure you correctly set these marks, see by the pictures below!
These are 12 o'clock marks on the crankshaft pulley
See the example, click on the picture here --->
4 o'clock marks on the crankshaft pulley
See the example, click on the picture here --->
- The pictures here shows the crank timing gear(top/bottom side), notice the design, it is possible the parts could mesh together incorrectly during installation, after a repair.
and
2) Next, remove top camshaft gear cover, front of the engine.
3) Using a dial or digital caliper tool that will measure in millimeters, measure the distance between the top Timing Chain Guide mount1 and the Intake Cam mark 2.
Specification is 61 to 64mm
See the example, click on the picture here --->
4) Using a dial or digital caliper tool that will measure in millimeters, measure the distance between the Exhaust Cam mark3 and the Intake Cam mark 2 .
Specification is 124 to 126mm
See the example, click on the picture here --->
- If the readings are off, suspect there is a concern with the cam/crank timing, typically there should be a fault code for this condition, such as a 16400/P0016/000022 - Bank 1: Camshaft Position Sensor (G40) / Engine Speed Sensor (G28): Incorrect Correlation .
- Also if there was no prior repairs to this engine, it is possible there is a bigger problem awaiting and immediate attention may be required. Yes, that is a broken intake valve, #3 piston, all the intake valves were bent!.
Ask me how I know this....
-- oh, and there is the 'might as well' factor. . . when and if you have this all apart, check the 'Camshaft Bridge' (part that sends oil to the camshafts), the screen inside can fail and the material can migrate to the cam bearings, possibly damaging the cylinder head.
ref: VW Tech Tip '01-15-08 MIL ON, DTC(s) P0011, P0016, P000A, P0341 and or P052A Stored in ECM Fault Memory'
Camshaft Adjuster Valve - FAILED (The center part should NOT be extended out as seen in these photos!) Dec.2018
Hope this helps,
drpeter
2006 Audi A4 Timing Chain Tensioner
There is an underlying issue in many Audi and Volkswagen models built between 2008 and 2015 that if left unchecked could result in very expensive engine damage. The engines affected are the 4 cylinder TSi engines in both 1.8 litre and 2.0 litre variations.
The risk is that the lower hydraulic timing chain tensioner may fail, later model vehicles with the fitment of these engines have a revised timing chain tensioner which has removed this risk from the engine design.
Above is a photo of the two timing chain tensioners, the unit on the left is the tensioner prone to failure and the unit on the right is the revised tensioner.
What does a timing chain tensioner do? For your engine to work properly it is critical that the moving parts within the engine work in perfect time with each other. The component in control of this task is the engine timing chain and the timing chain’s associated components. One of these associated components in charge of keeping a critical tension applied to the timing chain is the timing chain tensioner. The timing chain tensioner is basically a hydraulic ram, when the engine is running oil pressure in the engine is fed to the tensioner and this pressure forces the timing chain tensioner piston against the moving timing chain. By doing so all the slack in the timing chain is taken out and ensures that the timing chain will not jump over spocket teeth and put the engine out of time.
Audi A4 Timing Chain Kit
What goes wrong? When the engine is started and oil pressure is fed to the timing chain tensioner the piston is pushed hard against the moving timing chain, but when the engine is switch off there will be no pressure to hold the timing chain tensioner in place. To combat this there is a mechanical ratchet that forms part of the tensioner unit and this ratchet hold the tensioner against the timing chain when oil pressure is no longer present (the engine has been turned off) This ratchet assembly is the fail point in the early design tensioner. When the ratchet fails the piston applying tension to the timing chain can fall back away from the timing chain and suddenly there is a huge amount of loose timing chain present.
The real problem here is that this will usually occur when you have turned your engine off. The next time you start your vehicle all symptoms are present for the timing chain to jump out of time as you crank the engine over to start it. If the chain does jump there is instant and considerable internal engine damage. Because the engine is out of time the pistons collide with the valves in the cylinder head and bend or break them. The engine will no longer run and the repair cost is in the proximity of $4000 to $5500 depending on the extent of the damage which can only be assed when the cylinder head is removed from the engine.
How do I know if I am at risk? Certainly, if there is any rattling noise from your engine have it assessed immediately. However, if your engine is quiet that does not mean that all is well and you may have the suspect tensioner fitted to your engine. To put your mind at ease the best thing to do is have the engine inspected and fortunately this is not a big job to inspect. There is an inspection port on the front of the engine that is fitted with a plug which can be removed quite easily to identify which timing chain tensioner is in place.
Audi A4 Timing Chain Marks
If the latest model timing chain tensioner is in place then all is well, we fit a new plug to the inspection port and you can rest easy. If your timing chain tensioner is the type that is suspect to failure we can replace it for you to the new tensioner. We keep the parts required in stock and the procedure usually takes around 5 hours. This remedy is most certainly a whole lot less expensive than repairing the engine after a timing chain tensioner failure.
Audi Timing Chain Tensioner Recall
Below is a photo of the new revised timing chain tensioner fitted into place on the left hand side of the engine.