Between 2008 and 2012 Volkswagen produced the CAVD 1.4 Litre TSI twin charged engine for the Volkswagen Golf. This early generation of engine was problematic with issues in the pistons and rings.
Rings and piston lands were known to smash which VW put down to fuel at a lower grade than 98 octane being used. This does add up and consumers are always advised to stick with 98 octane fuel where ever possible.
Additional costs with this repair are caused by the fact that this particular engine design uses a sleeve type bore which means that engine refurbishment is not an option and complete replacement engine blocks are required when repairing this fault.
The CAVD engine must use 98 octane unleaded fuel as lower octane fuel will cause the engine to ping and result in prematurely cracked pistons.
Another issue is the timing chain tensioner. The tensioner is known to be a poor design and a upgraded tensioner is now available from VW. The catch is no one knows which one they have in their car. If the faulty timing chain tensioner fails, which creates slack in the timing chain allowing the chain to become loose and thus allowing it to jump teeth. Jumping teeth can result in smashed valves and cylinder head damage.
This engine is also known to have stretched timing chain faults however several of these are more then likely the result of the tensioner failing rathe then the chain itself, it makes little difference as the end result is the same.
Avoid the twin charged 1.4 engine at all costs. all vehicles have common faults, unfortunately vehicles fitted with this motor, the common faults are tens of thousands of dollars worth.
Fortunately our experience has shown VW to be very good when handling these engines and warranty complaints. We had one client who is now eight years out of manufacturers warranty still get this repair covered by warranty.
The new 1.4 engine had most of these faults rectified. The way to identify this is the new engine came out with a timing belt instead of a chain. VW claims this belt never needs to be replaced but don’t be fooled the “life of a car” according to most manufacturers is 5 years or 100,000kms Change the rubber belt every 100,000 the same as you would in any other car and you will be fine.
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