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Another common issue is camshaft timing chain tensioner failure, again in earlier generation 1 models. This was due to the design of the retaining element that after higher mileages and / or premature wear stopped the tensioner from holding the tension in the timing chain.
auto-motor-sport.de and the Volkswagen press releases to the new Polo 2009 "VW presents new 1.2 litre TSI and 1.6 litre TDI engines for Golf and Polo". WorldCarFans.com. Volkswagen AG. 13 May 2009 "New engines 1.2 TSI for Leon and Altea". SEAT.com. SEAT. 5 March 2010. Archived from the original on 16 July 2011
The Volkswagen EA211 engine (EA = development order), also called modular gasoline engine kit, is a family of inline-three and inline-four petrol engines with variable valve timing developed by Volkswagen Group in 2011. [1] They all include a four-stroke engine and dual overhead camshaft drive into exhaust manifolds. [1]
The Alfa Romeo Twin Spark engine, introduced in the 1987 Alfa Romeo 75, also uses variable valve timing. [3] [4] The Alfa system varies the phase (not the duration) of the cam timing and operates on the inlet camshaft. [5] Alfa Romeo's variator is a cylindrical chamber that contains a pressure chamber and piston along with helical splines.
The Volkswagen Polo is a supermini car produced by the German car manufacturer Volkswagen since 1975. It is sold ... (125 PS) engine with variable valve timing.
Volkswagen Polo Sedan (Russia) Volkswagen Polo sedan (Malaysia) A three-box sedan version of the Polo Mk5 was introduced in 2010. It is known as the Vento in India, Malaysia, Brunei and Mexico. In South Africa, Argentina, Russia, and the Middle East, it is sold as the Polo Sedan. The word Vento means 'wind' in both Italian and Portuguese.
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Aside from the belt/chain itself, also common is a failure of the tensioner, and/or the various gear and idler bearings, causing the belt/chain to derail. Furthermore, in engines where the timing belt drives the water pump, failure of the water pump can cause the pump to seize, which can break the timing belt or chain.