i have a 2000 gsr integra and i have a problem with my vtec, when it starts kicking in i can hear it but i really cant feel it , when it gets around 7k rpm it sounds like when a car tops out on rpm, now i've read some posts and it says that it could be the oil, witch i haven't changed, or the weather cuz is to could out side. please help and tell me what you think. thanks

 

You aren't supposed to feel vtec engage. In theory, it should be a smooth transition from low to high cam to smooth out the torque curve. If it is engaging without a check engine light or bogging, there isn't a problem.

 

you have the common noob misconception that you're supposed to be pushed back into your seat when vtec hits. it's not a turbo. dont worry, now you know better.

 

When my vtec kicks in, my neck snaps back, so I don't know what you guys are talking about...

 

before this poblem i felt my vtec , i mean it didn't kick me back but i felt my car speeding up,in other word i felt the difference , now is not even doing it, i can only hear it and it also sound like if i was toping out when i am only like at 6700 rpm , this problem just started. i really think is cuz i need an oil change. i checked my oil and is like really black. has anyone had this problem before?

 

it's probably a good idea for you to do a full tune up. oil, filter, plugs, wires, etc.

 

Low oil, oil pressure, or even Dirty oil can cause Vtec to malfunction.

I know what your saying, checking the dipstick & get an oil change quick! If you don't want to do it yourself, pay somebody the whopping 25 bucks and get it done. If your still having problems afterwards, get a Chiltons or Haynes and troubleshoot.

 

now my question is , can bad oil really affect the vtec that much?

 

Is the level low? Short answer, yes.

 

vtec runs off oil pressure so bad oil can cause problems