496 water impellar
#1
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496 water impellar
I changed my impellar because of low water pressure sensor going off, now I can't get any water to flow except for when I use my factory wash outs in the hull. I backflushed the engine several times with no luck. Everything was fine untill I replaced the impellar. Any ideas 496 mag h.o.
#2
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Did you put the hoses back on the pump the same way they came off??? They might be reversed.
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#3
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What condition was the pump housing and cover in? If they have any scoring, they won't prime or won't pump well. It's not uncommon, pump is a piss poor design... Brass housing with no wear sleeve or wear plates in the impeller cavity. Unfortunately, the usual fix is a whole new pump. Do a search on the subject, it's been discussed here plenty.
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If the top plate is wore. Lay it up on a disk sander and grind it smooth. That resolved my issue. Nothing you can really do with the bottom on the cavity of the pump. Unless you get a rebuild kit.