MOT last wednesday.. we failed emissions smoke test.. 2,18 average over 1.4 on plate.
So.. I'm in the middle of investigations and taking some steps to guarantee it's going to get through when I take it back..
Your input / thoughts as I go, most welcome?
Prior to MOT...
Car since I have owned, most liable to chuck out smoke, when I gun it off stand still e.g. from a roundabout. Also pulling underload in the wrong gear.
For the past couple of months we have been in limp mode (P132B performance). Thinking it was going to be a sticky variable vane, I was procrastinating about drilling and tapping the turbo to do a clean. As it turned out, I found after disengaging the lever, and it moving with no trouble when hot or cold, that it was the turbo actuator had failed (intermittent operation when cold, and then totally failed).
So. Replacement actuator and lever now moving again freely.
There are no active DTCs.
Have changed air filter which looked way past its best.
I was able to provoke some symptoms which repeatedly provoked smoke. This is with the car just sitting on the drive.
the car idles fine.
If I slowly raise the revs, no problem.
If I put the foot down straight from idle, i get hestitancy and then revs, and a puff of smoke.
I have a silicone intercooler pipe with mekalor clips.
Did a leak down test, injector 4 filled 100ml in 60 seconds, others negligible, and is the only injector I haven't yet replaced,
Have ordered a replacement tested injector to see if that makes any difference.
I had a replacement EGR valve bought as a precautionary step (car is euro 4 with sensor on EGR). Out of curiosity, I fitted it.
That gave me real weirdness. When I planted the foot on the throttle, I got a lengthy oscillation, much smoke, and then revs.
At present, I'm not sure if I've just got a crappy EGR (was fairly cheap) or some symptom exacerbated by the change of EGR.
The two EGRs seem to actuate with different vacuum thresholds. The original needs a minimum pressure then opens with a thunk. The replacement valve seems to open with a far more linear fashion when vacuum gradually applied.
FORDIAG / FORSCAN
I have a ForDiag HW and SW and ForScan SW, and still attempting to get comfortable with the readings and configs.
Both seem to have advantages in certain situations? (formidable / F-super I have, but can't run due to windows 10 driver probs)
ForDiag ->TDCI gauges fuel rail temperature showed no response (min temp), but Gauges ICU->Fuel Temp? is this the same sensor?
ForScan -> First time using, I tried monitoring all the ICU-monitor points, the CPS (crank?) was showing error (waiting -> error) - I have no running or starting issues.
My next step is to get some reference for MAP and MAF. I wasn't sure if MAP was responding enough this eve...