That's true also, but by pinching only the 1/4ÔÇØ from exhaust manifold to waterbox you're already eliminate the risk of backfilling waterbox and exhaust ports.
I use this method also to give the IC a proper 5 min. backflush with engine stopped. So I'm not limited in time by the burning carbon seal.
Checked this the first few times with 1/4ÔÇØ hose disconnected. To be sure the pinched hose would not let any water through towards waterbox.
I use this method also to give the IC a proper 5 min. backflush with engine stopped. So I'm not limited in time by the burning carbon seal.
Checked this the first few times with 1/4ÔÇØ hose disconnected. To be sure the pinched hose would not let any water through towards waterbox.
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