I've had a problem for a while of a fairly loud "frying" noiser from the front of the engine that appeared to be the water pump.
So I just replaced the waterpump and it was as a quiet as could be for about 5 mins BUT NOW THE FRYING'S BACK
On the previous pump I diagnosed the problem by eliminating it temporarily by squirting WD40 behind the pulley and that quietened it. So what am I doing wrong to make water pumps noisy??
It sounds like it could be the alternator/dynamo too. Have you checked them?
Secondly, check and double-check the alignment of your three pullies. I experienced a big problem with Hebe when the bottom crank pully and the top water and alternator pullies were out of alignment.
If you've got the whole thing too tight too that'll cause problems
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I guess the wd40 got on the belt - and that stopped the noise? Try a new fan belt first - then the generator - but yes - the pulleys MUST be correctly aligned.
I'm intrigued by the pulley alignment question. I have an alternator fitted and I think it's aligned OK, the alternor top front mounting fits snugly against the waterpump and bolts on fine, the rear bracket has a threaded rod and spacers to fit the old dynamo rear mounting.
Is there a recommended way of checking pulley alignment?, they certainly look OK but is that sufficiently accurate?
I will change the fanbelt BTW probably should have done that while I was at it
A straight edge - or just by eye is usually good enough. Quite often I have had to put a thin washer between the water pump and the alternator at the front mounting. The rear bracket should be a special shape to suit the alternator - with a short sliding sleeve in the alternator to allow some adjustment. If you only have the old dynamo bracket and a long threaded rod- then maybe the alternator is lying back at an angle to the horizontal -which could be the problem. Look for a proper alternator bracket from a Mini.
I think you may be spot on. A closer look at the front end with Mrs Johnm led us both to believe that the alternator is a little behind the water pump. It's about washer thickness I reckon, so I'll look for the bits in question and get it re fitted as soon as I can. I can check the refitting with a straight edge.
Good news! A couple of thick washers fitted between the top two bolt holes and the mounting brackets have indeed made the frying disappear
Any thoughts on getting a set of wipers to work I bought a complete new set of wipers and arms from ESM and they were no better than the ones I took off However they were different so I've now managed to find a combination of old and new wipers and arms that actually clears both sides of the screen pretty well
edited to add Oh BTW I've also get a spare water pump now too
Well done with the washers. Generally the 'chrome' blades are hopeless at wiping the water away - this applies to Minis too - but I have fitted the rubber blade from black holders into my 'chrome' ones - and they are better.