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Discussion Starter #1
my mechanic is finishing my Alfetta 2.0 but he can not hold the cams in place becuase the chain slips when you turn the engine, he says that maybe the tensioner spring is not giving enough pressure. but I have seen in this forum that the spring has no function whwn the engine is running; any help please, (the engine has not run for more than seven years). thank you
 

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1966-2013
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13,741 Posts
Are the keys in the cams present?

Are the little lock bolts that go through the cam gears present?

Either of those missing will certainly allow the chain to slip and you're correct, the tensioner is just that and has nothing to do with whether or not the chain slips on the cams.

However it does have to have proper tension to set and maintain cam timing.
 

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Trained (ex)Professional, , 1953-2018 RIP,
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16,232 Posts
The tensioner spring is not designed to maintain chain tension. It is only to adjust static chain tension. The tensioner is then locked in place with the tensioner locking bolt at the front of the head. Doing a search for chain tensioner or similar will result in numerous threads on the subject. A couple of posts have a parts breakdown of the tensioner and locking mechanism.
 
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