g3m xr

hi hope you can give me some help !

ok if im cruising along at low boost cars fine

but if i put my foot to the floor it judders when u hit 4500 revs or 10 psi , if u go up the revs slowly your fine and go can right up to 6000 revs no prob but try to do it quickly and it judders

have just fitted a boost gauge and its not running high boost at the moment as ive just finished running in the engine ( only running bout 11 / 12 psi i think) and its when it hit 10 theres the problem

have cleaned boost selonoid

so does it maybe need spark plugs ? api told me i didnt after the rebuild run in but the bloke i brought the car off said i would so that confused me !

or is it coil packs ? im just learning bout scooby engines so not sure what these do lol just something someone has mentioned !

is they anyway of testing these? or does it need to go on a diagonstic ?

kildare scooby

i'd say its ur plugs my car was the samewhen i bought it and when ya take out the cil pack if there is ay cracks on it then it needs to be replaced

ads00

I had exactly the same problem with my scoob bout two weeks ago, it was more noticable in 3, 4th and 5th gear, apparently i was missfiring wen foot was to the floor, got new spark plugs an new leads, cars good as new now,

gatecrasher3

Definately worth checking the coil packs. Remove them from the engine then carefully take off the rubber boot and check for cracks, even hairline cracks can cause them to fail. If any are cracked they need replacing. You can wrap them with insulating tape then put the rubber boots back on but that is only a temporary fix.

For reference API were the cheapest place I found for coil packs when I replaced mine.

g3m xr

thanks for that , are they hard to remove myself ? im a right beginner when it comes to the scooby engine

gatecrasher3

Not hard but a little tricky to get at. When I did mine I removed the airbox to get to the ones on the drivers side and the battery on the passenger side.

g3m xr

havent got an air box , have a hks filter maybe it will be easier !

kildare scooby

you will still have to take it off and they are still awkward to get off on the fr sid i took off the water bottle