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My second T4, operation de-chav
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Had to re-time the engine again today.
I had the pump locked up and think I set it back exactly how it was before I disturbed the cam pulley.
Now it'll start but is obviously retarded.
With vagcom running, measuring block 0, drop into basic mode which removes the ECUs input to correcting the timing and the engine dies.
Obviously the timing is well out, so I get out the DTI and set it up at 0.6 - should be .55 but I think a bit of advance might help.
Now with vagcom running again I switch to basic settings, the engine stutters and carries on running. The timing graph shows that even despite the static advance I've added it is still retarded. I lock the pump up again, release the cam pulley and ease the flywheel back about 5mm from the mark.
It is now in the right position on the timing graph, bouncing between correct mid timing mark and the top limit - too much jumping about for my liking but it is at least in the right ballpark.
All well and good - but this leaves a nagging doubt. Why is the correct timing so far out?
Could be the wrong mark on the flywheel - I don't think so
Could be a soft injector - but that would throw it the other way??
Pump problem?
Crank sensor?
Anyway, Sausages turned up earlier to ruin my van in the quest for epic lows. Can't take the dubber out of the boy. More to follow.....
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Originally posted by regcheeseman View PostAll well and good - but this leaves a nagging doubt. Why is the correct timing so far out?
Could be the wrong mark on the flywheel - I don't think so.
Sent from my SM-G901F using Just T4s
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But, the old setup was done with the DTI and set at 55. The more recent check with vag com found it was retarded. Cant say for definite if my original setup was checked with vag com when I first did the belts.....think it might have been but maybe not? If not perhaps the TDC marks are right on both flywheels, something else is amiss?
I do know it still isn't starting properly, never has done. Perhaps those 240s need to go in. Guess the map should be close and the hammer mod may be required - I'd rather re-calibrate my IQ adjuster if that's an option.
BTW, did you leave a couple of voicemails on my phone? I've a couple I listened to earlier but they break up really badly and I only get half a word here and there, did definitely hear 'derby' and maybe 'gearbox'
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Describe the starting problem...but you think its fuel? but the 240's are not going to help, you don't need the hammer-mod... try logging the start up, might need to setup a bespoke log...
Any codes showing...Has your flashing dashlight stopped?
Nope no calls from me Reg did your phone not date and time the messages? Could of been the delivery driver with the gearbox?
Sent from my SM-G901F using Just T4s
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Originally posted by regcheeseman View PostCheers raas clart!
I'd be lying if I said I don't want an orange grille a la GT3RS.
Intercooler pipes,
yes I have got shares in silicone pipes and mikalor clamps.
Bought one of these
Plenty of good reviews and one that said it doesn't fit.
Should have listened to the one reviewer as it doesn't really fit, complete fuding pig of a job - took countless attempts to get the lid on properly without displacing the filter, broke the retaining clips twice. Crap product dont buy.
So I'm up and running again, just waiting for some hippy to sort out my suspenders
Sent from my iPhone using Just T4sSlowly slowly catchy monkey!
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Originally posted by Activ8 View PostDescribe the starting problem...but you think its fuel? but the 240's are not going to help, you don't need the hammer-mod... try logging the start up, might need to setup a bespoke log...
A proper set up diesel engine should fire literally the instant the key is turned, mine has always taken a second or so, and always chuffed a bit of white smoke.
All symptoms of poor atomistaion/low internal pump pressure (typically air in fuel) - no sign of air so I'm looking at injectors - that's why the 240's (or any balanced, clean spraying injectors) might help.
Originally posted by Activ8 View PostAny codes showing...Has your flashing dashlight stopped?
Putting my ECU back in and the crank sensor problem remained - wiggle the wires and away it goes??? engine running, wiggle wires again and it's rock solid, no problems at all
All I'm left with is a suspect lithuanian ECU, a suspect crank sensor/wire/plug and the old EEPROM coding faults and a flashing glow plug light.
Originally posted by Activ8 View PostNope no calls from me Reg did your phone not date and time the messages? Could of been the delivery driver with the gearbox?
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Originally posted by regcheeseman View PostA proper set up diesel engine should fire literally the instant the key is turned, mine has always taken a second or so, and always chuffed a bit of white smoke.
The new map tightens 4th gear acceleration and now feels like 3rd, but the SOI fueling maps were backed off 25%! across the temp range.
(I'm currently experimenting with emissions test running when cold)
Originally posted by regcheeseman View PostAll symptoms of poor atomistaion/low internal pump pressure (typically air in fuel) - no sign of air so I'm looking at injectors - that's why the 240's (or any balanced, clean spraying injectors) might help.
When I read it thats what I was thinking, but whats not making any sense is I'm backing the fuel OFF.
New map emailed.
Originally posted by regcheeseman View PostAll I'm left with is a suspect lithuanian ECU, a suspect crank sensor/wire/plug and the old EEPROM coding faults and a flashing glow plug light.
EEPROM Coding - I suspect its corrupted so you cannot adapt the new ECU with your cluster and fault is permanent until the EEPROM is rewritten.
I found VAG K-Commander (Chinesium copy versions 1.4,2.5 & 3.6) unreliable and reporting actions that corrupted the file and did nothing with regard to the task requested ie IMMO OFF. That said I don't know exactly whats supposed to happen but I doubt whether its supposed to loose all the vehicle data. I'm hesitant to start playing with this as my vans are running fine with IMMO on etc...plus I'm in the middle of my own cluster upgrade without confusing the install.
Sent from my SM-G901F using Just T4sLast edited by Activ8; 5 March 2018, 01:29 PM.
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Originally posted by Activ8 View PostI'll send you the latest map thats running in Colin01332's van, but I'll take a look at the map you're running.
The new map tightens 4th gear acceleration and now feels like 3rd, but the SOI fueling maps were backed off 25%! across the temp range.
(I'm currently experimenting with emissions test running when cold)
Surely if it was the injectors - unbalanced etc.. they would be leaking fuel?
When I read it thats what I was thinking, but whats not making any sense is I'm backing the fuel OFF.
New map emailed.
unbalanced injectors would make the timing jump around - don't know if this is picked up by the ECU or if it just takes the needle lift sensor signal as the trigger for timing measurement, which I suspect is the case.
leaking fuel? not sure about that.
poor atomisation wont help starting or the white smoke when cold problem - it definitely has that AJT smell.
Colin's map will be fine for my fmic setup?
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