FordTractorMan
Member
Have run 2 tests for cracked head/blown gasket - ran 30 seconds & cracked cap - no pressure. Started up cold w/cap off & checked for bubbles - didn't see any. Bought infrared thermometer to check upper & lower hose temp. Here might be a problem - took side shields off to get to hoses easier & ran for a good while. Didn't want to puke any then, but finally spit just a little coolant out. Thinking it may have been a mistake to leave off the shields since it didn't want to act up then, but anyway, I checked both hoses and found 157 deg. on lower and 173 on the upper. When I drove it home & checked it when I parked it, I got 146 lower temp & 165 upper. Is this enough difference to indicate a flow issue? Or, since the side shields were off and presumably it got more air, could it be the fan clutch? Thanks for all the input thus far.