Finding a 'constant fine stream of bubbles' is not definitive.
mrfxit,
Mar 6, 12:47am
Certainly a good indicator of other issues. A constant stream of fine bubbles could also indicate a leaking water pump. Not all faulty water pumps leak externally, sometimes they suck air in.
mrfxit,
Mar 6, 12:48am
Ding Ding, you & me too as well.
bellky,
Mar 6, 1:26am
Also can be an indication of cavitation, and air in system and etc. the only way to be sure is to raplace the cap with a new correct one, and if that doesn't fix then a co2 test, and a pressure test.
splinter67,
Mar 6, 2:12am
Read post 12 they have already got a new cap
sr2,
Mar 6, 4:10am
Hate to say it but as I said earlier I'd be surprised if it's not the head, get a TK test done. Make sure you let us know when you find out what the problem is.
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