[peterjh]

i just bought a 1989 supra , non turbo, the rad was shot so i replaced it, after replacing the rad it started smoking alot and hasnt stopped, after running it for about ten minutes, coolant starts boiling out of the spark plugs. I have my suspicions the head is cracked. this is the first supra that i have owned and i dont know alot about them. i was wondering if anyone could give me some feedback n what this problem is , or if there are any inexpensive ways i can diagnose what the problem could be any help would be greatly appreciated