hi there the car wrx 94 scoob as developed missfire when cold and stops when gets worm or if i drive hard form cold (yes i know you should never do that) it does not missfire is this comman with scoobys hope you can shed some light thanks

 

Sounds like a coil pack....

 

as far as i know the coilpacks have bin replaced but only had the sellers word on that

 

Did you try the plug's or the lead's.

 

a lot of early cars run very rich on cold start and this can cause a fuel mis-fire.....................sounds like what you have, though it would be worth having a good check out anyways

alyn

 

i have some new plugs ready to put in was going to give it a diy services how hard is it to put the plugs in the left side look ok but not mush room on the right side

 

If your not sure dont chance it, murphy's law (if it can go wrong it will)
When im changing my plug's i spray a small bit of wd-40 on the rubber boot and slide it up the lead, then a long nose pull it off.
You can damage the lead if you just reef it off.

 

mite let the garage do that job then is it worth checking other parts that may cause the missfiring probblem and what could it be (plugs coil packs) out else all the info would be great thanks