dan17

hi,right ive been having problems with my car running lumpy (3 cylinders) real bad on boost ect. mainly noticed it after i changed the plugs without gapping them so ive regaped to 0.686 when i was told to put them all back in and it ran even worse.
so ive pulled the coil packs off and had a look and there completely dead,cracked and falling apart so ive bought new ones fitted them and still it runs like a bag of spanners so if anyone can help me resolve this problem i would be very greatful its getting abit tedious .

im certain its spark related could one of the tips be damaged also my freind dropped one on the floor could this be the problem.

dan17

right just been back out and regaped the plugs once again this time to 0.610 and theres still no change still running like crap im going to pull the plugs out of my mates dead engine which ran fine apart from the small problem of the piston rings to see if it is my plugs that are the problem

dan17

from the top

Slowboy Racing

If the gap is too tight you will have idle/running issues. Plugs gaped out of the box are fine for starters.

Try the other plugs first then check the wiring and connections to the coil packs if you still have issues.

KareenaBaby

hi there what is your post code?

thanks

dan17

it did run fine out of the box but on boost hesitated and i was advised to gap them to 0.70 0.60 ive even tryed gapping them back to 0.80 but its still bad il try the other plugs in the morning and see what happens

post code is po9

RAPID STI

iTrader: (4)

If its running on 3 cylinders as you say then find out which cylinder is failing to fire(pull a lead 1 at a time and see which does not change things)

As Slowboy says replace plugs with the old ones if you still have them and see what happens.

Slowboy Racing

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KareenaBaby

thanks, my boyfriend will bring the car to u on tuesday

Adam Jackson

Hiya, Put your old plugs back in and try it. Plugs can be a real pain in the backside

dabow

iTrader: (19)

what plugs are you using by the way.
i had this when i first got the scoob, only use min of ngk platinum at 0.7

also, if it still runs crap. check through each plug for being damp/wet. or very sooty

dan17

thanks for all the help guys put the old plugs back in and it runs as sweet as a nut,imho i think one of the plugs was damaged when my mate dropped it.
anyway all is well and im happy once again

Adam Jackson

Its a common thing matie, what make plugs did you put it?

dan17

ngk pfr6b

Adam Jackson

hmmm strange that. Ive got them in mine and they seem ok. Take um back mate

dabow

iTrader: (19)

id say the same thing.
if they were a different make, then its the plugs. ngk are really good

send/take them back mate

dan17

thats right ngk have a really good rep, i reckon it was because my mate dropped one on the garage floor that must off damaged the plug