Engine Cooling problem
1988 Ford F150 V8 Four Wheel Drive Manual 125000 miles
Replaced original cast heads with aluminum heads. Aluminum radiator flow checked good. New waterpump which turns counterclockwise with serpentine belt original. Throttle body and plenum original. Temperature sending unit new and gage reads right at 12 oclock. But when rpm is increased top radiator hose collapses just like a dead worm. When the engine is stopped you can feel the top hose bubbling as if it were overheating. Could this be bad water flow do to increased heat from aluminum heads? Timing is set to 5 degrees btc with plug pulled. Also engine has mass air system too.
have the same problem?
Monday, March 16th, 2009 AT 7:11 PM