Spudly
03-03-13, 07:55 PM
Right ive found an odd problem on my nova, went over to scunny yesterday and was enjoying the backroad blast on the way there, engine was fine till i got almost to Robs!
Going round a roundabout in third, doing about 35 mph, i put my foot down and it lost all power and the rev counter dropped for a second, then it came back and carried on fine, if youve ever experienced hard cornering with an xe that doesnt have an injection tank/swirl pot, with quarter of a tank or less, it cuts out due to fuel starvation, this was exactly the same and was what i first thought it was, till i realised it has a full tank!
Carried on about quarter of a mile and put my foot down and bang, violent misfire/cut out!
Got to robs and it seemed fine, put it in his garden overnight and when i fired it up today, misfire when rev'd and actually cut out on tickover a couple of times.
When i left to go home it was missing badly when revved and it was a struggle to set off, once moving if i feed the revs in really slowly, it will drive and accelerate fine, it seemed to get a little better once it warmed up and by the time i got home it was revving far better, and i got it almost all the way to the limiter in third by gradually putting the revs in!
Try putting my foot down quickly and it still misses and obviously cuts in power, try putting my foot down hard and its a violent misfire and the rev counter drops almost to zero before springing back up to where it was when it stops missing!
Ive tried a second known working fuel relay and its the same, ive checked my wiring to my pump, my wiring to the fuel cutoff switch, the plugs are fine and are gen gm ones with only about 3000 miles on them, there dont appear to be any air leaks and my donut pipe is almost new, the airbox has no cracks or leaks, but im thinking the problem has to be electrical, and i dont know if the eml is on as its not connected :roll:
Im thinking it might be coilpack at fault, its never been changed from when the engine was in my cav, nor have the leads as ive just not gotten round to it yet, and i wouldve tried a coil pack from either Rob's or Hendrix' novas, but theyre both on dizzy so dont have them lol
Any suggestions/ideas peeps?
Going round a roundabout in third, doing about 35 mph, i put my foot down and it lost all power and the rev counter dropped for a second, then it came back and carried on fine, if youve ever experienced hard cornering with an xe that doesnt have an injection tank/swirl pot, with quarter of a tank or less, it cuts out due to fuel starvation, this was exactly the same and was what i first thought it was, till i realised it has a full tank!
Carried on about quarter of a mile and put my foot down and bang, violent misfire/cut out!
Got to robs and it seemed fine, put it in his garden overnight and when i fired it up today, misfire when rev'd and actually cut out on tickover a couple of times.
When i left to go home it was missing badly when revved and it was a struggle to set off, once moving if i feed the revs in really slowly, it will drive and accelerate fine, it seemed to get a little better once it warmed up and by the time i got home it was revving far better, and i got it almost all the way to the limiter in third by gradually putting the revs in!
Try putting my foot down quickly and it still misses and obviously cuts in power, try putting my foot down hard and its a violent misfire and the rev counter drops almost to zero before springing back up to where it was when it stops missing!
Ive tried a second known working fuel relay and its the same, ive checked my wiring to my pump, my wiring to the fuel cutoff switch, the plugs are fine and are gen gm ones with only about 3000 miles on them, there dont appear to be any air leaks and my donut pipe is almost new, the airbox has no cracks or leaks, but im thinking the problem has to be electrical, and i dont know if the eml is on as its not connected :roll:
Im thinking it might be coilpack at fault, its never been changed from when the engine was in my cav, nor have the leads as ive just not gotten round to it yet, and i wouldve tried a coil pack from either Rob's or Hendrix' novas, but theyre both on dizzy so dont have them lol
Any suggestions/ideas peeps?