daddybrian154
Sep 8, 2012, 10:58 PM
I have a 92 ford ranger a we replaced heads,gaskets,thermostat and still gets hot and it blows a spark plug wire off
TxGreaseMonkey
Sep 9, 2012, 04:15 AM
Replace the radiator--phosphate scale is likely blocking passages. Refill with a 50/50 mixture of antifreeze and distilled water. Read you Owner's Manual on how to properly fill the radiator and purge air from the system.
Extreme heat = high resistance. The resistance in the head may be so great that the electricity in the spark plug wire is trying to find a shorter path to ground. In the process, it rips the wire from the plug.