Twin Spark water pump - Alfa Romeo Forum
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(Post Link) post #1 of 6 Old 05-12-12 Thread Starter
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Twin Spark water pump

I had the water pump changed on my Twin Spark at 36k miles, along with the belts, as recommended.
When I got the belts done at 72k, I didn't bother changing the pump again.

My questions are:
1) Can a mechanic check whether the pump has a plastic or metal impellor without too much trouble, or does it mean belt and pump off?
2) If it's a metal impellor, does that mean it shouldn't ever need changing again?
3) If it's plastic, am I dicing with water pump failure (current mileage 81k miles)?

Thanks!
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Quote:
Originally Posted by Richard Cooke View Post
My questions are:
1) Can a mechanic check whether the pump has a plastic or metal impellor without too much trouble, or does it mean belt and pump off?
2) If it's a metal impellor, does that mean it shouldn't ever need changing again?
3) If it's plastic, am I dicing with water pump failure (current mileage 81k miles)?
1) To do it properly you need to empty engine of the water and remove belt and check.
Maybe be able to bodge it with it all in place but it will knock the timing out anyway.
2)Incorrect - they all have bearings. They wear over time. Just the chances of part of the impeller wheel collapsing are less
3)Not really but if the belt isa due a change I would factor in the £30 part. I'd do it anyway.
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(Post Link) post #3 of 6 Old 05-12-12 Thread Starter
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Thanks. To clarify, belt isn't due until 108k miles, so pump will have done 72k miles by then...
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I'd probably wait till the 108K belt change then.
There not as critical as they are on the diesels. Its usually the tensioner that fails on the twinspark.

Unless of course you are doing the work and dont mind spending a few hours tinkering.
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(Post Link) post #5 of 6 Old 06-12-12 Thread Starter
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Thanks - I'm not doing the work and my 'tinkering' would cause total disaster!
I can do oil and filters, but that's it.

Good advice - cheers.
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TwinSpark water pumps usually last well over 100k miles. Mine was on it's original when I had it changed at 150k as it had a minor hairline crack.
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