Easy Way Water Pump Replacement

The Miata water pump is located behind the timing belt. Unfortunately, if your water pump craps out, you need to do an entire timing belt job in order to replace it. Many people believe in prophylactic replacement of the water pump when the timing belt is done. The idea is that since you're already doing 90% of the labor to replace the belt, the extra work to do the pump isn't too much. On the other hand, you may be tossing out a perfectly good water pump long before it's necessary. Our water pump made it 170,000 miles. We would have thrown out good water pumps at 60,000 and 120,000 had we replaced them at the time. Still, this is a personal decision you need to make.

CAMPULLY.jpg (25061 bytes)To replace the water pump, start with the Timing Belt instructions. Once you get to the point where it tells you to "change the water pump", come back here.

We're not sure if it has to come off, but the job is a bit easier if you remove the cover plate marked with the E/I positions for the timing marks. If you replaced the cam seals, this had to come off anyway.

Remove the timing belt idler pulley and the tensioner pulley. Don't lose the tensioner spring - you'll need it on the new water pump.

Completely remove the pivot bolt from the power steering pump. Don't disconnect the oil lines, but move the PS pump out of the way and tie it off. You'll need the access space to remove the water inlet pipe flange.

Mer Cruiser Alpha one water pump


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