Car Has Issues With Accelerating Hard

[wados]

well did the fuel filter tonight, and I can rule that one out. also looked at the spark plugs tonight didnt have any to replace so just took out one and they are still the original spark plugs from ford the cars done 60,000Ks is that a lot for sparks or should I replace them and with what.

The last thing I can think of is maybe the coils which I hope not, but tonight took it for a spin and between 4000-5000 it stutters but above 5000 it lays the power down great

Edited 09/05/08 01:24 PM by wados

[mercuryturbo]

Plugs should last longer than that.

Having said that mine were replaced at around the 43000k mark when I had the car tuned as the originals were pretty ordinary.

[purple headed warrior]

well did the fuel filter tonight, and I can rule that one out. also looked at the spark plugs tonight didnt have any to replace so just took out one and they are still the original spark plugs from ford the cars done 60,000Ks is that a lot for sparks or should I replace them and with what.

The last thing I can think of is maybe the coils which I hope not, but tonight took it for a spin and between 4000-5000 it stutters but above 5000 it lays the power down great

Are you using a generic tune? I had a similar problem using the generic 8 PSI tune and as soon as I replaced the spark plugs it stopped. Put in the NGK BKR6EIX plugs, they are about $20 each from repco. Have fun replacing number 6.

[RAP1D]

Do the plugs mate.

Sure the plug experts like to say you'll get 100ooo kays from them, but, that's in dads stock falcon or mums camry... not a boosted high performance car.

Once you leave the factory tune/psi level plugs should be looked at often, cleaned/replaced to alloy optimum firing and spark output... a poor or medimum spark is ok on stock boost, but once your over stock, the plugs become very important and need to be tip top all the time. If not you'll experience breaking down in power as the spark isnt big enough.

I dont use irridiums, they are for camrys. They were acually chosen originally due to the V6 motor being so hard to change plugs, they chose a plug that would come close to out lasting the new car waranty lol.

Just ask for the non-irridium version and save your self alot of $. Gap them corectly and that should fix up your issues

[wados]

thanks for all your help guys and thanks rapid for the tips, did the spark plugs today and gapped them. So the good news is that has fixed the problem all is good now feels so much better. Thanks again guys

[neo]

I am also getting the same problem. I will be doing the plugs on the week end and may do the fuel filter. ill let you know how it all goes.

[joshbmx]

if it sounds almost like rev limiter but your engine still keeps revving its hard to exlplain exactally what I mean but id change the plugs, my engine did that and I checked in a set of spark plugs and wow power increase was amazing and no wierd noise. Cant really compare to TC as my ute doesnt have it :(

Edited 16/05/08 02:55 AM by joshbmx

[neo]

as I replayed before I have this. I have just get new plugs and cleaned the throttle body and tighten the manifold bolts and still getting issues. the car revs great till 5500 ish and then revs but goes no ware. maybe fuel pump

[RHR]

Valve springs??

[neo]

well I dont think its the springs well I hope its not. but if you build the cars revs up it will go past this point but do it like normal it wont do it.

and if your springs are not happy u can hear the idle. but the idle is fine I think its fuel because I can get there but its like the car runs out of fuel before I get there.

its annoying because every time I do something to get the car ready for a tune. something happens. and I don't want to get tune and find out it was the springs the void my warranty.

I had abit of a look on the site and herd the fuel filter is under the passenger floor I cant find any pics and when I look I cant find it under my car am I looking in the wrong place.