tlorenzo

hello all, i got a 04 4runner with 4.0L and recently replaced HG and got heads worked. Month later had pressure in coolant again and figured out it was coming from #6 cylinder. Tore head back off and all looked good. Could tell that possibly between 4 &6 HG didnt seal well. Checked levelness and all good. Was wondering if anybody had this issue? i used DNJ gaskets. i mean i used them in pass on 4runner and no problems. anybody got suggestions? thanks