adam wrx99

Hey all I need help, cars holding bk on accelerating 70mph in 5th put ur foot down and it just don't wanna know spluttering like a goodun. I've gave it a service, maf sensor, standard air box still not perfect please help ;-)

Dmacnz

If it has just had a service, I would check for air leaks.
If not possibly spark plugs or coils.

adam wrx99

I've been lookin for leaks all weekend but nothin obvious and its had new plugs, leads fuel filter and air box. Is there any way of checking the coil pack?? It's the single block on top.

Dmacnz

Depends on the model. My coil packs at directly on top of the coil. You can remove then and look for any cracks etc. but is not overly scientific proof!

chocolate_o_brian

iTrader: (22)

Regards the coil pack on MY99-00 Impreza's, you can easily remove it and look visually for cracks with a torch of bright light. But that's no indication to say it's fine just as it may not have any cracks.

I had a recent issue after a remap where when hitting full boost at 1.45bar it would chuff and splutter. I replaced the plugs, tried two different MAF's, checked for leaks etc. Nothing worked. Replaced the leads and coil (which looked fine visually) and the problem was gone! Was obviously something in there that was corroded, which when running standard power wasn't showing. However after a remap when said components were running more stress, it was prevalent.

adam wrx99

ideal thanks for the ideas, ill have a visual on the coil pack and try get hold of another. I've recently bought new plugs and leads.

chocolate_o_brian

iTrader: (22)

No problem, least you can rule said plugs and leads out.

Which plugs did you fit out of interest?

adam wrx99

ngk irridium things???? also the leads were £38 7mm leads plus a new fuel filter.

chocolate_o_brian

iTrader: (22)

As long as it wasn't cheap eGay krapp

adam wrx99

na it was all from my local mill auto and motor factors ;-) wat plugs and leads do u recommend?

chocolate_o_brian

iTrader: (22)

I've got NGK iridium a myself I think. Well they're heat grade 7 and recommended by my mapper. Box is lying around somewhere

Leads were actually s/h off a mates modified Scoob, red 8mm ones and do the trick nicely but can't remember the brand. Not much help admittedly but lots of knowledgable info on here These early shifts fry ones memory!

adam wrx99

Lol yeah thanks for all the info lads. It's so annoying wen its not running rite Grrrrr

LeeMac

iTrader: (1)

Personally I wouldnt use stuff from mill autos on a scoob esp filters, always subaru filters

I would try another Maf

Surely the Maf wasnt from mill auto?

adam wrx99

Na that was original Subaru. Yeah I think I will from now on, cheers

LeeMac

iTrader: (1)

tried anything else yet?

adam wrx99

I've replaced a few breather pipes, took off the coil pack and had a good look and put some injector cleaner and octain boost in with the fuel. But no change as yet ;-( I'm gonna drop it around my local Scooby garage scoobybits.co.UK coz he supplied and fitted the maf so ill see wat he comes up with. I'm hoping its a dodgy maf, fingers crossed ;-)

The Trooper 1815

iTrader: (31)

Fuel System problem? Is it getting through properly?

Filter?

Pump?

Fuel pipes?

adam wrx99

Yeah I'm thinking fuel. Before I bought it its been stood for about a yeah and **** fuels gone thru so v power thru hopefully will clear it out.