Volkswagen Golf/Jetta 2 manual

General information
Engine repair procedures - 1.6 and 1.8 litre 8 valve / General information

The 1.6 and 1.8 litre 8-valve engines are of four-cylinder, in-line, overhead camshaft design, mounted transversely at the front of the vehicle. The transmission is attached to the flywheel end of the engine.

The crankshaft is of five main bearing type, its endfloat being controlled by a shouldered centre bearing or by half thrustwashers located each side of the centre bearing.

The camshaft is driven by a toothed belt which is tensioned by a tensioner on an eccentric bearing. On engines manufactured before August 1985, the valves are operated by bucket type cam followers in direct contact with the camshaft. From August 1985, all engines are fitted with a redesigned cylinder head incorporating hydraulic bucket tappets in place of the previous shim bucket tappets.

Camshaft bearing No. 4 is deleted on all single camshaft engines. In order to identify the type of tappets fitted, a sticker is normally affixed to the valve cover indicating that valve clearance adjustment is neither necessary nor possible.

An intermediate shaft (driven by the toothed timing belt) drives the distributor and oil pump and on carburettor equipped engines, the fuel pump.

The oil pump is of twin gear type, driven from the immediate shaft and incorporates a pressure relief valve.

The aluminium cylinder head is of conventional design with the inlet and exhaust manifolds mounted on the rear side (as viewed with the engine in the vehicle).

The crankcase ventilation system comprises a hose from the flywheel end of the valve cover to the side of the air cleaner.

On fuel injection equipped engines, there is a hose to the air inlet manifold and a hose to the air cleaner from a three-way connector on the valve cover.

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