vz performance issue

[desert-eagle]

Hi guys,
My car is having performance issues. I always fill 98 octane fuel. I have to press the peddle down hard to get upto 60 k/hr . Looks like engine is taking too much power to move the car. I have checked air pressure.
Tyre are brand new
Recently topped engine oil
Coolant is full
No error codes shown at all.

I suspect will it be spark plugs ? . Is there a way to find out ?

Any suggestion would be appreciated. Thanks in advance.

[Darcon666]

Auto or Manual?

[bigdaddycool]

coil packs? .... depends if it's missing on acceleration................ OR if your just driving on really hot day, it's probably just knocking like crazy (engine wise). If it's heat try a Mace Manifold Spacer..... they help a tad

[desert-eagle]

it is just missing acceleration on rainyday even.

[desert-eagle]

it is automatic.

[Darcon666]

You never said it was missing.... does it miss while in neutral(No load...)?

Coil packs(As mentioned..), Injectors, Plugs, Slipping torque convertor, Gearbox oil low(auto)... pcv/vacum leak, Knock sensor, TPS... would be the tings I would look at first.

Good luck.

[desert-eagle]

i am just suspecting that it is spark plug as i have to press the accelerator half way down to achieve 60 k /hr . it is not missing. thanks for help !

[desert-eagle]

tomorrow i will get new spark plugs

[RiCeY]

Are you releasing the handbrake lol

[desert-eagle]

vz starts beeping if handbrake is not released

[desert-eagle]

spark plug changed - issue resolved.

[Benboy]

So, what exactly would you put that down to (replaced plug(!!)) a lack of maintennance or part failure ? Why did you only change one plug when you consider the amount of work to get access to them.

[RiCeY]

Logic tells me he did replace them all and simply made a typo.

[desert-eagle]

all plugs - (typo)

[CRUSTIN]

I'm surprised it was the plugs cause normally you would feel the miss, or notice the engine note changed. And when a plug fails, it fails all the time, so idle would be rough.