Yes, the plastic housings do crack, around the bolt holes and into the oring area. I've seen several do this. Karl M ----- Original Message ----- From: Tim Marciniak <tmarcini@mail.execpc.com> > I located a coolant leak coming from the thermostat housing area. I > replaced the O ring that seals the lower thermostat housing to the front of > the left head. I could not get a real good look at the seat in the > thermostat housing that the O ring sits in but I did try to clean it out as > best I could. I reassembled everything, also did my annual cooling system > flush etc etc and was a little dissappointed today to see that I did not > fix the small coolant leak I had originally set out to fix. > > I am now suspecting the lower thermostat housing and thinking that there is > a problem in the seat for this O ring. The thermostat housing is plastic > and like other plastic parts it tend to degrade by cracking I presume from > the heat and cooling cycles. |
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