Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[feeutfo]

I guess you want me to bring my Lappy next time we're meeting up then

Oh, bagsie I drive, which he watches trims on tech2.  Purely for scientific purposes to compare the suspension, and nothing to do with wanted to rag the tits of it...

No Fair I never get to drive

Thats because you're a cripple, Glassback

Oh Christ, better get the brakes sorted then.   

Can't be worse than TBE - some shitbox new Mini thought he could be a typical BMW driver, using an inappropriate lane earlier in the rain.  Now I wasn't having that, so I purposely matched his acceleration so he couldn't change into the correct lane (my lane), so he gunned it. Obviously, I had no trouble matching him. Got to around 2nd to 3rd redline gearchange before nailing the brakes for the rapidly approaching roundabout, which immediately reminded me I had a space saver spare wheel on one corner



But I forced him off an exit he obviously hadn't intended to use

Worth the risk, and OOF honor upheld. 

[feeutfo]

Codes cleared, which reset the fuel trims with snap on reader.

Re calibrated again, still rich on bank 2 when looking at petrol injector times via LPG software, which is still complaining injector nozels are too big at 2.5 mill. Need to get a 2.3 mill drill I think....?

Any further thoughts?

No miss fires, and  lambda 1 on Bank two now cycles continually.

Why are ingetor times higher on Bank 2? By about 0.7 to 1.0ms longer duration than bank 1 :-/

[Kevin Wood]

Why are ingetor times higher on Bank 2? By about 0.7 to 1.0ms longer duration than bank 1 :-/

Because the fuel trim has cranked it up to keep the mixture correct according to the lambda sensor. Can you see the fuel trims with that code reader. (want to borrow a nice ELM that can? ).

Are the injector durations between the banks the same on petrol or also offset?

[feeutfo]

Why are ingetor times higher on Bank 2? By about 0.7 to 1.0ms longer duration than bank 1 :-/

Because the fuel trim has cranked it up to keep the mixture correct according to the lambda sensor. Can you see the fuel trims with that code reader. (want to borrow a nice ELM that can? ).

Are the injector durations between the banks the same on petrol or also offset?

Yep crappy snappy does fuel trims and some live data. They where plus 24% both banks. Re set light came on the way home today. Fuel trim error both banks.

So, out with the drill and a bunch of drill bits from 2mll to 2.5. Re drilled a second set of injector nozels  to 2.0. Re calibrate, no more injector nozel warning after calibration. Injector times now seem perfect between cylinders.

Driven round the block and light still on, expecting it to go out in a few miles but I'll re set it again tomorrow do i re calibrate again?

Does the LPG need a few miles on petol first before calibration?


Anyway, seems to have sorted the bank in balance, will see what transpires.

Nozels where previously 2.5 mill diameter.

[Kevin Wood]

Yep, given what's happened I would reset the fuel trims by clearing the engine codes before recalibrating the LPG. If you do it with a huge fuel trim stored it'll never be right.

Interesting. Those injectors must flow much better than the old ones (or have a faster open/close time) to need the jet to be that small. Makes me wonder if that's what cured the lag all along... because while I'm not about to mess about changing the vapouriser to cure it I might consider swapping the injectors. :-/

[feeutfo]

We can play swapsies. 

[feeutfo]

The lambda was changed, as I'm sure you read. Trims cleared. Re calibrated. No change in bank imbalance. Eml returned.

Smaller nozels seems to be the only thing that affected the bank imbalance. Although there where clearly other issues....Why one bank should be more than the other when all nozzles where all too big by the exact same amount? No idea. But it was immediately happier, noticeable at 2.0mm during re calibration even.

All cylinders and both banks are within 0.1 or 0.2 of each other afaict. The usual "wave" of numbers rising up the list of cylinders on the software has returned.

If it's not happy now, I don't know where else to look, but we'll see. 

[Kevin Wood]

Sounds like you've cracked it. My guess is that the LPG was too rich on the minimum injector duration the ECU could muster, and perhaps the other bank was slightly less rich, so it didn't wind the fuel trim up.

Would be interesting to do an injector swap when we've got a few hours to kill (Newent perhaps?)

[TheBoy]

Hmmm, wonder if its worth knocking my nozzles down to 2mm - something I had considered doing when I first got it.  Stayed with 2.5mm due to occasional 'Injector fully open' errors at full bore.

chrisgixer, yours is still rich at WOT across full rev range and full speed range with 2mm nozzles?


The only issue with my Elite is after its been idling more than a few seconds, a small hunt starts to appear, which immediately goes if I flick it to petrol.

[feeutfo]

Hmmm, wonder if its worth knocking my nozzles down to 2mm - something I had considered doing when I first got it.  Stayed with 2.5mm due to occasional 'Injector fully open' errors at full bore.

chrisgixer, yours is still rich at WOT across full rev range and full speed range with 2mm nozzles?


The only issue with my Elite is after its been idling more than a few seconds, a small hunt starts to appear, which immediately goes if I flick it to petrol.

Can't check re WOT just yet until I either bump into Lazy or find someone prepared to drive it at WOT... My neighbour with snap  On reader is out currently so taking it easy until checked.

Hunting and bank imbalance would appear to be due to oversize injector nozzles.... So far anyway. If it's lean then can go bigger obviously. I guess there will be a point where it stays rich enough but doesn't hunt, that will be the magic drill size. Bit fussy if so, but so be it.

[TheBoy]

Hmmm, wonder if its worth knocking my nozzles down to 2mm - something I had considered doing when I first got it.  Stayed with 2.5mm due to occasional 'Injector fully open' errors at full bore.

chrisgixer, yours is still rich at WOT across full rev range and full speed range with 2mm nozzles?


The only issue with my Elite is after its been idling more than a few seconds, a small hunt starts to appear, which immediately goes if I flick it to petrol.

Can't check re WOT just yet until I either bump into Lazy or find someone prepared to drive it at WOT... My neighbour with snap  On reader is out currently so taking it easy until checked.

Hunting and bank imbalance would appear to be due to oversize injector nozzles.... So far anyway. If it's lean then can go bigger obviously. I guess there will be a point where it stays rich enough but doesn't hunt, that will be the magic drill size. Bit fussy if so, but so be it.

IIRC, we did glassbacks to 2.3mm

You drive it yourself at WOT, using the record feature of the s/w ...  ....Or give Mrs CG a tablespoon of sugar-filled jelly cubes, and tell her its a VW Polo, not a Vauxhall 

[feeutfo]

Hmmm, wonder if its worth knocking my nozzles down to 2mm - something I had considered doing when I first got it.  Stayed with 2.5mm due to occasional 'Injector fully open' errors at full bore.

chrisgixer, yours is still rich at WOT across full rev range and full speed range with 2mm nozzles?


The only issue with my Elite is after its been idling more than a few seconds, a small hunt starts to appear, which immediately goes if I flick it to petrol.

Can't check re WOT just yet until I either bump into Lazy or find someone prepared to drive it at WOT... My neighbour with snap  On reader is out currently so taking it easy until checked.

Hunting and bank imbalance would appear to be due to oversize injector nozzles.... So far anyway. If it's lean then can go bigger obviously. I guess there will be a point where it stays rich enough but doesn't hunt, that will be the magic drill size. Bit fussy if so, but so be it.

IIRC, we did glassbacks to 2.3mm

You drive it yourself at WOT, using the record feature of the s/w ...  ....Or give Mrs CG a tablespoon of sugar-filled jelly cubes, and tell her its a VW Polo, not a Vauxhall 

Oh, yes, the other issue, lapy battery is breaked. So will need a rather long extension lead. 

May need to go bigger, I have 2.1/2/3/4 drill sizes  :-/  but iirc Lazytinkers hunts a fraction as well...? Or am I fuddled with yours again? 

[aaronjb]

I'm more than happy to volunteer to thrape the nuts off drive your car in a manner suited to testing WOT performance, Chris..  

[feeutfo]

I'm more than happy to volunteer to thrape the nuts off drive your car in a manner suited to testing WOT performance, Chris..  

...sorry, what was that? The Telly is up loud...  :-/

[aaronjb]