Delboy2

Hello M8 - hows it going?

The valves not seating could deffo be a problem, on yours it was ok at lower boost levels but became an issue at higher boost levels afaik? - I remember you mentioning this before

Cheers

vessy

Must admit I havent tried the 6mm trick although i thought this only helped a misfire in the torque rev range? or weak packs?, I probably will do when I get the 7's, what gap are you running Del?

I know i must get the fuel pump and reg sorted, pay day may help! Tried to call on Fri, phone was off or is it fooked?

Jolly Green Monster

iTrader: (4)

Deffo agree on the plug gaps.. try 0.5~0.6mm

Simon

vessy

Should the plug gaps be reduced then for modified cars? or only to solve a problem? I ask because it's suggested as a temp fix for weak coilpacks, we both have new.

Jolly Green Monster

iTrader: (4)

But you are running above standard boost no?

It is an easy job to alter the gaps and tells you straight away whether it is spark related.

a softish (not put you through the screen fuel cut) miss at high boost / rpm is 99times out of 100 spark related on a coilpacked car.. dropping the gaps will solve it..

Simon

Delboy2

Funny you should say that - Had someone trying to phone me for 3 days, eventually got me on MSN and said my phone was off but it was deffo on. Cycled phone off & on last nite, received a load of text messages & 16 missed calls

I am running 7's with a 0.6mm gap

Cheers

ScoobyDawg

Hi m8

I have the same problem at high revs in all gears, so I had the map checked, it highlighted the cam and crank sensors?. I have changed coil pack, leads, crank sensor, cam sensor, MAF, plugs and installed a £140 earthing kit.

I have an ApexiFC mapped by AndyF - loads of performance, which pulls strongly all the way through the rev band UNTIL the problem area and then the knock sensor on the FC goes mad.

I am looking at the posibility that a pully, cambelt or cambelt tensioner may be loose or causing an increase in noise/vibration at high revs. This could be then be getting picked up by the sensors and cause my problem.

Anyway, lets hope we both get the issue cleared.

Dawg

Jolly Green Monster

iTrader: (4)

Dawg,

I assume you are not running a phase 1 car though?

Simon

vessy

Simon, yes I am, but the problem was there when the car was standard, I changed the packs before any upgrades and they made no difference! Also if i drive the car on light throttle up to above 6k I still have the misfire and rev needle jumping around, needle flicks down to around 4k and back up again very quickly (might try to video it), and i'm only showing slight positive manifold pressure.

Dawg, does your needle flicker too?

Time for a new phone Del, just don't get a sony ericsson, unless you fancy standing by my shed too

So, are we saying that the coil packs are not man enough to handle raised boost and we should all run at 0.6mm, even when they are new?

Jolly Green Monster

iTrader: (4)

the rev counter jumping sounds more like an electrical problem..

Tend to find on NGK PFR7Bs that with new coil packs a 0.6mm gap gives a better spark upto high boost.. if you are getting a miss which seems like it could be spark related it is worth closing the gap slightly to see if it improves rather than just dismissing it as you have new coil packs and plugs set to 0.7mm

Simon