Quote:
Originally Posted by eseyoung
let me throw this out...i don't know if it would happen or not. If you force water (antifreeze ), with a pump into the exchanger and in to the manifold wouldn't be possible for the liquid to flow into the open exhaust valve(s)? when it is running or even cranking there is compression air being left out of the valves that keeps this from happening but if you weren't cranking or running what would stop it from getting into the cylinders?
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I think only if it backs up in a water lift muffler or your exhaust system doesn't drain properly...otherwise the water in your exhaust system when you shut down would drain back and do the same.