K20 i-vtec sound problem !!!

[Warabto]

Hi
i have a 2007 civic si with a k20 and my vtec dosnt make the sound that it did befor ... the vtec still opens but it sounds like the motor is just over reving it doesnt do that deep vtec sound .... plz help ...

Thx

[CNUco2007]

was your engine warmed up? VTEC will not kick in unless it's warmed up. I know you said it kicks in, but figured I would throw that out there. I guess check your oil level too.

[Ruthless909]

Originally Posted by Warabto

Hi
i have a 2007 civic si with a k20 and my vtec dosnt make the sound that it did befor ... the vtec still opens but it sounds like the motor is just over reving it doesnt do that deep vtec sound .... plz help ...

Thx

Really???




















































































































































j/k

[Warabto]

yeah it was warmed up ... because it dosnt open befor having 3-4 lignes ... and yeah im due for an oil change its at 0 im doing it on the 30

[Warabto]

also .. if it is low in oil does it mean my cars burns oil .. .and what could cause this effect to happen .. ? is this bad for a 2007 burning oil ?
thx

[cderalow]

Originally Posted by Warabto

yeah it was warmed up ... because it dosnt open befor having 3-4 lignes ... and yeah im due for an oil change its at 0 im doing it on the 30

there's an off chance that your maintenance minder being at 0 prevents the vehicle from engaging in VTEC, or effectively a semi-limp mode (hahah flaccid VTEC).


on a side note, having your maintenance minder being at 0 and - mileage might void your warranty.

[ceevic]

Originally Posted by Warabto

also .. if it is low in oil does it mean my cars burns oil .. .and what could cause this effect to happen .. ? is this bad for a 2007 burning oil ?
thx

i think its been mentioned before, when u vtec u burn more oil, it was more of a problem with older honda engines, think it still happens a bit with the new engines?

[Duce2k]

I don't feel the VTEC kick like I used to when my car was new, so I'm probably just used to it now, I've had mine for a year and a 1/2 already. I don't know how long you've had yours but now that your engine is well worn in you may not feel it like you used to

[Phalanx]

have you considered the possibility that you're just used to it now and dont notice it as much?

[lovecheese]

How can people not change their oil in cars? Leaving the maintence minder at 0.... Fail

[V-Tekken]

Check your air filter, less air in the chamber = less vtec tone. being a mechanic you should always start with the basic.

Vtec also engages based on oil PSI. low oil PSI because of low oil = probles with Vtec.

As for burning oil, it's not uncommon to see the newer 06-09 Si "burn" oil. If you hit vtec often make sure to check your oil level. and never fully trust the digital oil meters in your dash, they can be a false sense of security.

If it is a computer problem (i doubt it) you can try to restart it by unplugging the negative terminal on the battery for a 5 min. Be prepared to unlock your radio and reset your clock.

to be of further assistence could you give some info?

How many miles do you have?

Driving habbits?

Do mantain your car regularly?

What oil do you use?

What aftermarket Mods do you have if any?

Basewith a few of these we can filter the out the cause and come to a conclusion

[07sikspd]

The vtec change over sounds different all the time somtimes it has a deep pop like a rubberband and other times it has a mild change over. You are still getting max horsepower no matter how it sounds the colder it is the deeper it sounds. If you have a cold air intake and a throttle body spacer it tends to be a very loud and deep change over. Theres no need to worry about it unless you hear nothing at all than your either really low on oil or your engine is effed up. Good luck.

[cloudstrife0327]

yea mine sounds different everytime and i have skunk2 70mm and fujita sri