Abdullah

iTrader: (2)

when i press the gas pedal to the floor ( WOT) in my 2000 M6 Z28 at first it pulls fine then after 2 or 3 seconds it feels like something is holding the engine from its power then after like 1 or 2 seconds the engine is back to its full power then again it is repeated some times in this manner i can't understand what causes this i don't have SES light also today i deleted the cats and installed pipes instead but that didn't help at all for that thing car has ~56000 miles on the odometer. when the car is at nutral and press the gas pedal the engine seems to be OK no act but when i'm on the street it acts that weired way. could that be from the transmission itself or could that be bad spark plugs or bad spark plug wires how about the coils themself? thanks for help.

gwj

Abdullah, it's that sorry cheap 100 octane gas you're running. JUST KIDDING!
...changed your fuel filter lately? Just a thought.
GJ

Abdullah

iTrader: (2)

GJ, acutally i'm running a 95 octane unleaded fuel i didn't replace the fuel filter but if i'm going to do so i think a btter thing to do is a tune up isn't that right? i will try a tune up and see what will happen.

Abdullah

iTrader: (2)

actualy i found the reason, it was a dirty throttle body that needed cleaning and maybe was cleaning the IAC and something else of that kind. the dirts were because of that the previous owner put a K&N filter without oiling it (with the red K&N filter oil) and caused all kind of dirts to enter the engine.

the dealer who discovered the reason for the car's wiered acting.

i solved that problem a long time ago maybe 2-3 years ago.

i know it is late for me to post the explaination but i did it (post) (smile).

nemss1

i need some input from u. i read your fix to the problem but ive also read on here that the oil gets sucked in causing detonation

need advice

Abdullah

iTrader: (2)

i'm not sure about oil getting sucked into the engine but the dealer told me that the inside of the throttle body and the sensors connected to the throttle body from inside the throttle body were dirty and they cleaned with i guess WD-40 and that solved the problem.

nemss1

when u said feels like something is holding the engine from its power, are u talking about bucking?

my car bucks at WOT but i know i need a tune

Fifedogg

iTrader: (15)

Thats why I run stock paper filters in my car. Dont have to worry about that dirt getting through so easy.

Abdullah

iTrader: (2)

yeah, maybe you call it bucking. it is like if the car is pushed forwared for a 1 second then leave the car then pushing it forward then leaving it and so on.

nemss1

just trying to get some input. mine bucks. i know i need a tune. so now i can get a tune and if that doesnt help, ill try what u did