I had tuned up done on my 1989 rv winnabago...change carburator...manifolds,muffler
fuel pump.the mecanic toke it for a test drive and the radiator littarally blew up...
do you have any suggestions as to why and what would be the next logicall
step todobeforeputting a new one in???

Optional Information:
1989 Chevrolet winnabago 454

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