bingbangbong2001

Just had My servce done as I do each and every year, I also had a drivers side rocker gasket fitted.
Got the car back and Everytime I started to boost.
It kept jolting backwards and forwards and felt like a bag of nails.
I took it back to the garage.
They realised that their supplier had given them the wrong plugs.
They changed them so I pcked it up.
Things seemed better until really hammering it.
Occasionally there would be hesitation and even when on full boost, Power would drop for a split second then back on again.
This would do this very intermittantly then other times everything could be fine.
It is an MY95 UK Impreza Turbo. No mods to speak of.
My question is - Could this be the coil packs which I have to say, Seemed fine before the service???
If not then what else could it be?

jaytc2003

iTrader: (1)

quite possibly could be the coilpacks, they tend to crack with age as I am sure you know, and removing them and refitting etc when changing plugs in my opinion is likely to increase the likelyhood of them failing.

Maybe an idea to reset your ecu to see if that helps

bingbangbong2001

Will give that a try Cheers

bingbangbong2001

bttt

mag6/4 2

on full boost this wil happen if coilpacks are on the way out

rabskyline

boost solenoid hoses.... exactly as described.. jolt on full boost then power then jolt then power.. clean them out !

bingbangbong2001

Not Too familiar with the location or procedure, could you please explain as if I were a 5 year old , Cheers in advance

bingbangbong2001

Are they likely to just go altogether or will this prob just simply get worse?

WRXMATT

I agree it sounds like the coils as they have been removed a few times to swap plugs. Take them out and look for cracks in the plastic.

nessscoob

check all spark plug gaps are set right this can cause misfire at full boost

bingbangbong2001

Got 4 new col packs from JPS Motorsport today.£200
Fitted them and the problem has gone
Cheers Guys

Now pulls like a train with no Juddering