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But Mad North-Northwest
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14,019 Posts
Definitely adjust the chain tensioner, but please don't do it with the engine running. That is the old procedure and is somewhat dangerous.

Do a search: there is a safer way to do it by removing the valve cover and moving the tensioner with a pry bar.

If your mechanic doesn't know about this adjustment you may want to find a mechanic who has more of a clue on Alfas.
 

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But Mad North-Northwest
Joined
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14,019 Posts
Spannermans simple timing chain adjustment.
DO NOT START THE ENGINE.
Select 4th gear
crack tensioner nut
Gently roll car forward letting engine turn only a few degrees.
Lock up tensioner nut
Don't let the engine turn backwards doing this.
That's the basically the procedure in the service manual for my '91 Spider, however the manual specifically says to move the vehicle backwards and forwards. So it doesn't seem like backwards is actually a problem.

However, the issue with this procedure is that the spring on the tensioning sprocket isn't very strong, and in some cases will not actually take up enough slack. The procedure recommended by Pat Braden is basically to slightly loosen the tensioner lock bolt, manually pry the tensioner tight with a long screwdriver, and then tighten the bolt.

Do a search and you'll find more details. Do not over-loosen the lock bolt or the tensioner pieces will fall into your sump.
 
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