Air lock question

[ginge191]

run the engine, let it warm up, follow the coolant pipes around the block, starting from the rad exit all around the block, matrix etc, and make sure that it is flowing round. if at any point you find there's a lack of warmth/flow then an air lock is possible. Overheating also is a sign of an airlock.

I dont know a sure way to physically check for air locks in systems utnil something goes wrong (as above, checking the pipes can prevent something going wrong)

hope this helps..