986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Can you hear the water pump blades hit the engine block before failure?

thstone · 08-22-2016, 08:13 PM

Since you already have the front engine cover removed; use a long handle socket to release the tension on the belt and remove it.

Then check for play in the water pump bearing. If the bearing is worn to the extent that the impeller blades can be heard hitting the block, there should be ample play in the bearing.

If no bearing play, then you'll have to investigate elsewhere to find the source of the noise.

08-22-2016, 08:13 PM	#4
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	Since you already have the front engine cover removed; use a long handle socket to release the tension on the belt and remove it. Then check for play in the water pump bearing. If the bearing is worn to the extent that the impeller blades can be heard hitting the block, there should be ample play in the bearing. If no bearing play, then you'll have to investigate elsewhere to find the source of the noise. __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor