could also check valve clearances-any excessivley wide could also indicate bent valve!
k
December 2007
According to Autodata this engine is an 'interference' type so there is a good chance that one or more of the valves are bent....put a new belt on, turn the engine over by hand using a spanner on the crankshaft bolt and see if you can feel any resistance. If not, have a compression check done on each cylinder before firing up - you may get away with it.
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Try fixfault.com to fix vans.