When you say it is using water, I assume you mean coolant. Check for white smoke from the exhaust as well as coolant mixing with the engine oil. If either of these things are found, then there is most likely a head gasket issue. If nothing is found, check compression in cylinder 8 and make sure you don't have a stuck injector. However, since it is using coolant, that leads me to believe there is a head gasket issue.
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Thursday, June 23rd, 2016 AT 6:45 PM