hi just changed my engine for a recon 1.8 ztec . runs fine ,BUT compresion building up in the water system, any idea's????? rang the place were i bought engine from he said the heads fine he drove it for 3 months be4 breaking car. recond 3000 miles ago, please help as im running out of cash


would an air lock or falty thermostat falty water pump cause the problem ??????

ok well thanks for the help lol joke,,,,fixed the car changed the therm and filler cap, all is well ,few. happy days