you will know it's cracked....you will have obvious coolant leakage...it took me about a week to realize it though....
First started when my coolant light came on...I didn't think much of it just figured it was a little low since things are warming up (live in the desert) so I topped it off with about a half gallon of water.....then about 4 days later I am driving home from work...coolant lights on again! I am like wtf...so then the first thing that comes to mind is that I have been smelling coolant lately when driving my car...never really thought much of it though..but once the light came on for the second time I went straight for the intake as the culprit and sure enough that was it. I just had to rev my car about 3-4k and it would spit out coolant.
as far as you telling if yours is leaking....I would say if you just pop your hood and look for the smell or sight of coolant you should be able to tell...I took a flashlight and shined it in the intake valley and there was a nice puddle...also my hoodliner had a nice stain now.....it's generally pretty obvious.
First started when my coolant light came on...I didn't think much of it just figured it was a little low since things are warming up (live in the desert) so I topped it off with about a half gallon of water.....then about 4 days later I am driving home from work...coolant lights on again! I am like wtf...so then the first thing that comes to mind is that I have been smelling coolant lately when driving my car...never really thought much of it though..but once the light came on for the second time I went straight for the intake as the culprit and sure enough that was it. I just had to rev my car about 3-4k and it would spit out coolant.
as far as you telling if yours is leaking....I would say if you just pop your hood and look for the smell or sight of coolant you should be able to tell...I took a flashlight and shined it in the intake valley and there was a nice puddle...also my hoodliner had a nice stain now.....it's generally pretty obvious.