i have a 2wd saph and when driveing it on sunday it kept trying to cut out on me, and then clearing up agian .
it did this a few times then died altogether.
me and a few mates tryed the basics,
dizzy cap ( cleaned and inspected for cracks)
rotor arm
plugs (which where replaced for new ones)
cleaned all sensors

all of these things turned out to be ok
the car will only now run on 2 cylinders number 2 and 3 not running at all
there is fuel and spark to all 4 1 and 4 running fine
cam timing is spot on but the dizzy pully is off its mark
and my own stupid fault when removing my cam belt cover i lost one of the nuts from the top , think it went down in the pully but never found it anywhere
the car is on greys and does run a bit ritch but have never had a problem starting any help will be greatly appreciated