if your boiler isnt a combi,if the bore of pipe is less than 15mm, or you have an air lock in pipe if it comes from above shower if so isolate shower from electric mains, if electric, and isolate water mains take shower off and turn mains on slow this will free any air locks good luck
scott (PLUMBER)
November 2006
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix baths and showers.