compressed

i have problem with my honda crv 2.2 i-cdti 2007 fuel injector , i noticed when i smell smoke inside my car while driving and start to hear flapping sound coming from the engine and when i open the engine cover i noticed that there is compressed air coming out from the 3rd fuel injector any...

We bought an '07 V last year with a Nitrogen inflated tires as a bonus from the dealer. But a month after we bought it, my wife was assigned (job) to a smaller town where Nitrogen is not available. So the big question is, it okay to mix Nitrogen with compressed air? I have asked several people...