I had my car running smooth.

I only have 3 vac lines and they are silicone.

the problem are the caps. They are cracking and now lets air in sometime.

Is there silicone caps or ones that won't crack after time?

 

yes there are silicone caps sold. I got mine at Autozone for about 5 Dollars for a set of different sizes.

 

erg..............

last time i asked for silicone hose they looked at me funny and showed my the normal stuff. I had to order it online b/c couldn't find anyone with it.

(i live in Iowa)

 

I have seen silicone caps at Autozone and O'riely's autoparts. I am sure others have them.