Boosted Falcon

I didnt realy no where to post this so i thought i may aswell give it ago here.

i have abit of a problem,my car starts to surging in 3rd and 4th gear if you put your foot down (once it gets past 3500rpm)
if you back of a little bit it starts to take off again,but once you put the foot back down it starts surging again.
i've change the plugs and leads and theres no differents what so ever.

dose anybody have any idea what this could be? any help would be great thanks.

How full is your tank?

Maybe reduce plug gap?

full tank.
thats a thought! even tho it was doing it befor i change the plugs.
ill give that ago.

you wouldnt happen to no what size to gap them to would you dan?

What fuel pump are you running? And as Dan said, check your plug gaps for sure.

Gap them to .7-.8mm

needfordspeed wrote:What fuel pump are you running? And as Dan said, check your plug gaps for sure.

walbro 550hp.

alright ill gap them tomorrow,hopfuly thats it.
thanks for the help fellas.

Can't suggest anything for the surging but i had a fucked coil that would be ok till you got some decent load into it

Yehh a coil was my next thought.
ill do the plugs tomorrow and let use no how it gose.

what does ford state the gap in a e-series 6cyl meant to be?

11mm.

thats whta mine are at now.

mine are fine at 1.1mm

yehh thats what i ment sorry.

dose that meen i gap them to 0.8mm? or just 8mm? lol

.8mm lol

i don't think its plug related considering you said it did that before.

try fuel filter
failing that get a pressure gauge on your fuel rail.... walbro pumps are as reliable as a $2 hooker addicted to crack

i have a fuel pressure gauge. what is the pressure ment to be at?

sorry to be a pain.

Which car is this in?

SnyperEB wrote:Which car is this in?

the maroon EB

Look at the pressure reg and TPS.

Im leaning towards the throttle position switch giving wrong readings to your ECU.

There's a fuel pressure gauge on the reg, so maybe keep an eye on that. Also, the plugs in it were pretty new, and I gapped them to 0.8mm, so it shouldn't be that.

Fuel filter was done maybe 2 or 3k ago as well if that helps.

Is it doing it under heavy load, or at light throttle as well?

private9 wrote:There's a fuel pressure gauge on the reg, so maybe keep an eye on that. Also, the plugs in it were pretty new, and I gapped them to 0.8mm, so it shouldn't be that.

Fuel filter was done maybe 2 or 3k ago as well if that helps.

Is it doing it under heavy load, or at light throttle as well?

its only doing it under heavy load.

this only ever happened once or twice with me under full load in 4th at around 3500-4000 so I never really thought much of it. I suggest that you have a look at the fuel pump.

yehh ill see what happens once i do the plugs 2moro and if nothin changes ill take it around to the mechanics

Full load in 4th at 3500-4000 would be going pretty fucking fast. I'd say slow down and don't worry about it.

If you're not going to slow down, I'd be looking at fuel pressure as well.

i only tryed it in 4th once to see if it did it in any other gear.
but it seems to do it in 3rd the worst..

went and gapped them 2day and now its all sweet.
thanks for all the help fellas.

expect a few more of these help threads in the future lol

good news, quick and easy fix. That's the last time a take the word of a "performance mechanic".

haha its all good.
the plugs you gave me where different to the ones in the car (they were longer)
so i took them both down to my tuner and he said the ones in the car were just standard plugs and the ones you gave me were performance plugs. so it worked out for the best in the end.

there are some truly hopeless "performance mechanics" out there. Just curious, what were the brand of the plugs that came out of the car and were they even gaped properly.

um im not to sure what the brand was. ill have a look in the morning.
they were all different lol. some were 7mm some were 8mm and some were 9mm.

Who was this "performance mechanic" ? What shop?

prefer not to say at this stage.

cranking wrote:prefer not to say at this stage.

stop cranking over an start already by telling us this so called work shop.

Hiboost wrote:

cranking wrote:prefer not to say at this stage.

stop cranking over an start already by telling us this so called work shop.

Yes, please do.

yeh if they are dickheads name and shame i say....

i will do the honour i was told it was cve

:O....who were you told by?

na carnt be CVE

Damn I thought by now there'd be a shitfight between CVE haters and fanboys. Will be back for another look tmrw.

yer i was expecting alot of shitfighting to