My car is still misfiring really badly after changing, plugs, leads, cap, rotor arm, and dizzy. It also puffs out loads of black smoke no matter what fuel pressure I'm running. I've been speaking to the garage that set it up and he reckons it could possibly be the crank sensor, could that be possible?
I seem to remember the symptons of a dodgy sensor is the revs running up and down the rev counter when trying to start the car? If so I remember this happening loads when the car was running standard induction.
apart from running the TPS gently around to check with a voltage meter for 'jumps' in the readings, which may give the black smoke and checking that the bodies are still balanced and not sucking to much air low down, which may or may not give a miss fire..
I think by now it's a cert that something is making the ECU itself overfuel - hence my suggestion of the temp sensor - I had a similar problem just after I'd installed the throttle bodies, but only for the first couple minutes after startup - however the sensors can do all sorts of strange things.
they're only cheap - replace it and see!
do you have the correct injectors for the map ? - I'm guessing Steve ran the beige ones - you haven't got blues in there have you ?
is it overfuelling on all cylinders (check plugs) ?
and yes, I agree that you would have to have the fuel pressure incredibly high to make it overfuel so far off the base map that you got black smoke - in fact I'd say you'd blow all your pipes or run out of pump capacity before that happened.
Nope running yellow looking injectors, the car had a 3bar fuel pressure reg as standard.
When Me and Steve removed the plugs all four of them where black sooty. It only puffs black smoke when I've got my foot flat to the floor. I',m gonna buy a temp sensor at the weekend (not have any time till then) and see if it makes a difference.
Could it be missing because its over fueling?
Starting to pull my hair out and beginning to think about selling them and putting back to standard but I know I'll regret it and Steve will never let me live it down
'yellow looking' would be the correct beige ones then.
only at WOT eh.. hmmm... but you say he plugs are always sooty ? - unless you drive around like tomstickland then I'd say it was always overfuelling then - if the problem was isolated only to WOT then the plugs should burn themselves off to the normal dirty brown you'd expect if you drove around non-loon style for a bit.
CTS is the next suspect to call in for questioning I'd say.