Hey guys.. just wondered if anyone could help me with an annoying problem I seem to be having

My 6 just doesnt want to put its power down? I can really feel it holding back under load, even when pressing the pedal very gradually.

I have searched the forum but there seems to be alot of inconclusive solutions. It seems to have got worse over the past few days, around about the same time I noticed a hissing sound coming from the engine?

I have a green cotten air filter directly fitted to the throttle body (I know that wont be helping matters as its sucking hot air) I also have a full stainless manifold-back system with sports CAT, which again, I know may cause a loss in back pressure.. but when I first bought the car it was alot quicker than this and I havn't changed anything since

I also have the comman oil leak from just below the intlet manifold, cant see this being in anyway related? I only ask as I know there are breathers and sensors in that area?

Also finally worth mentioning, today after taking her for a good run I was stopped in traffic for a good 5 - 10 minutes and it was occasionally miss-firing so could that be related?

Sorry for the essay guys... any help much appreciated!!!!

give it a good service, having the induction kit bolted straight onto the throttle body wont really help as you will get heat soak there, my advice would be getting a hose down behind the foglight and attaching the filter directly there only prob then is that it isnt an inclosed kit so puddles will be an issue in my view inclosed induction kits are well worth the money (BMC) with a cold air feed, havent put an open filter on my 6 so i dont have any experience on the best place to put them but im sure other peeps have and will give you advice on them

get the oil leak looked at aswell and have them check over the car because there could be other problems but i would defo get the car serviced

Have a check over your exhaust. Collapsed boxes and cats can cause bad performance.

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Ex SC-6

Now in a Megane R26

Made a small improvement today guys... was thinking hard as to everything I had done since buying the car and the only thing I could think of was this.... When I got the car there was a loose hose coming from a box below the inlet manifold so a couple of days ago I went along to halfords (thinking I was doing the correct thing) and bought a breather filter for it. Was a slightly tight fit now I think about it.

So this morning I took the filter off... not expecting a difference at all but sure enough it was noticably better Back to how she felt when I bought her.. BUT, it still feels SLIGHLY hesitant in comparison to a friends I drove last year?

Now after searching other threads on the resonator and what it does, I am thinking my problem may well be linked to it, maybe if its cracked or something?

Also, miss-fire is definately getting worse, particularly when the engine is right up to temperature... was sat waiting for my brother to finish school earlier and it was missing like a good-un, early signs of coil packs or plugs packing up??

Cheers for that, sorry for sounding stupid (don't have a clue about these engines or engines in general really) but where would I find these?

have you checked the plugs and coils for the misfiring? To check the coils: Locate which cylinder is misfiring, say its no 2 for example. Then swap the coil from no 2 to no 3 and vice versa. If no 3 cylinder NOW starts misfiring its a coil problem. replace all 4 coils cause usually when one goes the rest soon follow If its not the coils check the plugs are dirty or have incorrect gaps. This very thing happened to my bros 1.8 turbo Ibiza the other week. It was sluggish and kept pooping and misfiring and round about 4000 revs and up it was really weak. Replace the coils and away it went again.

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TEAM DIABLO!!

Ok well oil leak is now sorted.. but it's still missing on idle and I cant work out why? We checked plugs and they were pretty much brand new, coil's appear fine too We cleaned out ICV, still nothing. Only thing yet to try is MAP sensor but surely that wont be causing the lack of torque/power loss as well will it?

The guy that helped me fix the oil leak drove it and noticed that there are flat spots throughout the rev range...

low down it pulls OK until about 2.5k-3k, then goes flat, comes alive again and really goes for it at about 4.5k-5k, then dies again???

If it was a compression problem then would it not be consistantly gutless throughout?

Getting frustrated now cause I can really feel it trying to pull but it just wont have it

Well if the manifold air pressure sensor is sending incorrect readings to the ecu then it wouldn't run properly...

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Team China
Team Pirelli
Team Cracked Bumper
92k
20th Nov 1999 she was born

iv got this same problem with my revs, iv changed the ICV, Lambda sensor, dont know what to do now, let me know how it goes with the map sensor, i dont know where mine is on the xsi

How was it mate, did it sort the problem

im having so much problems with my engine atm, have you tried replacing the map sensor

http://www.306gti6.com/forum/showthread.php?id=120228&page=1

i rerouted the oil breather pipe from my TB and last time i checked the MAP sensor there was no oil at all on it

have you considered the fuel pump? my VTS is losing power and misfiring and i'm almost certain the shitty german fuel pump is behind this

hi there, ok now i have taken the trottle out, cleaned the manifold and exerything, put a new map sensor in and the problem still persists, i think im gona try looking for a icv now, you know any one thats got one