i was testing out a new intake and i noticed at high rpm that my radiator cap shoots out coolant but at low rpm its fine and i haven't had to add coolant.
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2006 Nissan Titan Question: radiator cap leaks at high rpm
Answer #1patrick mannion from Greg Solow's Engine Room, July 06, 2010, 21:39Master
The radiator cap has two seals a pressure seal and a seal that allows for coolant recovery. Check the cap is in tact and functional, check the sealing area in the radiator has no nicks or burrs either. Sometimes pressure build up in the cooling system is a sign of a blown head gasket but if you are not experiencing coolant loss or over heating you are probably OK.
Answer #2sequentez January 29, 2011, 18:53Rookie
hey buddy titans are known for thier weak radiators...i have cams headers exaust tune and this is a common problem i have