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Author Topic: LPG running problems  (Read 2099 times)

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Lazydocker

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Re: LPG running problems
« Reply #15 on: 26 May 2011, 13:00:12 »
Quote
Me too. :y..........got to go to work in a while, but will try to make some progree before I do. ;)

You can always take the lappy with you and then switch off no 6 so you're running mostly on LPG ;)
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albitz

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Re: LPG running problems
« Reply #16 on: 26 May 2011, 13:31:37 »
Just swapped the connectors and pipes from injectors to nozzles between 4 &6. The problem is still with no.6
Switch 6 off and it runs fine. So, that means a problem with the power supply to no. 6 ? :-/

LD, re carrying the lappy around. Thats what Im planning to do until I get it sorted. :y

P.S I cleared the no.5 error before I started. It hasnt reprted any new errors. :-/
« Last Edit: 26 May 2011, 13:35:16 by albitz »
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Lazydocker

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Re: LPG running problems
« Reply #17 on: 26 May 2011, 13:36:15 »
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Just swapped the connectors and pipes from injectors to nozzles between 4 &6. The problem is still with no.6
Switch 6 off and it runs fine.

LD, re carrying the lappy around. Thats what Im planning to do until I get it sorted. :y

Which does point towards a fault in the wiring (or injector hose for No 6) then. If the problem remains with No 6 Injector (bearing in mind it's the wire that denotes which injector it is ;)) then there's a problem with either the piggyback interrupt or the LPG injector wiring (assuming the ECU is fine as it appears to be) :y

It's certainly reduced your potential issues ;)
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albitz

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Re: LPG running problems
« Reply #18 on: 26 May 2011, 13:38:05 »
Any way of testing it with a multimeter ?
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Lazydocker

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Re: LPG running problems
« Reply #19 on: 26 May 2011, 13:40:18 »
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Any way of testing it with a multimeter ?

I wouldn't think a multimeter will react quickly enough to register the pulses :-/ :-/

Kevin will be more help on that front ;)

But I'd be looking at the pipework and wiring to that injector (and the associated piggy back wiring) very carefully :y
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albitz

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Re: LPG running problems
« Reply #20 on: 26 May 2011, 13:47:44 »
Injector timing (ms) shows all 6 injectors operating about the same. Would that indicate that the problem is pipework rather than electrical - or is it not that simple ?
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Lazydocker

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Re: LPG running problems
« Reply #21 on: 26 May 2011, 14:25:02 »
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Injector timing (ms) shows all 6 injectors operating about the same. Would that indicate that the problem is pipework rather than electrical - or is it not that simple ?
Fairly sure that version of the software doesn't show individual LPG injector times ;)
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albitz

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Re: LPG running problems
« Reply #22 on: 26 May 2011, 14:44:20 »
column on right side of screen says - injection times (ms) numbered 1 to 8, and they (1-6) are constantly moving - between approx. 2.8 to 3.1 on idle. :-/
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Kevin Wood

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Re: LPG running problems
« Reply #23 on: 26 May 2011, 14:47:39 »
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column on right side of screen says - injection times (ms) numbered 1 to 8, and they (1-6) are constantly moving - between approx. 2.8 to 3.1 on idle. :-/

Those are the times measured at the petrol injector inputs to the LPG ECU. There's only a single LPG injector pulse width reported.

If the No.6 injector time is stable and broadly doing the same as the other ones it's an indication that the signal is getting to the ECU from the piggy-back wiring. (As we'd expect, because the same signal operates the petrol injector when running on petrol.)

I reckon you have an issue with the wiring from LPG ECU to that LPG injector or a blockage in the pipe. :-/

Kevin
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albitz

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Re: LPG running problems
« Reply #24 on: 26 May 2011, 15:30:00 »
A t least we have narrowed it down to a couple of probable areas, so Im feeling a bit more confiedent now.
Nothing worse than having a problem and absollutely no idea how to solve it.
Thanks LD and KW for the help so far.
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Lazydocker

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Re: LPG running problems
« Reply #25 on: 26 May 2011, 15:38:34 »
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A t least we have narrowed it down to a couple of probable areas, so Im feeling a bit more confiedent now.
Nothing worse than having a problem and absollutely no idea how to solve it.
Thanks LD and KW for the help so far.
No worries... If you still haven't gotten to the bottom of it I'll try to come over next week and give you some pointers ;)
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albitz

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Re: LPG running problems
« Reply #26 on: 26 May 2011, 17:32:38 »
Cheers Paul. :y
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albitz

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Re: LPG running problems
« Reply #27 on: 29 May 2011, 18:16:23 »
YAAY !! fixed it. :)...........had a 12 hour break between shifts today, so took the plenum etc. off and had a careful look at everything. The pipe to the nozzle on no.6 was cracked where it goes onto the nozzle and was bent too tight where it comes out of the nozzle.Chopped 1cm off the end and carefully rerouted it and alls well. Wouldnt be such a pita if the nozzles had have been drilled in a better place during installation, but its sorted now. :) :)
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PhilRich

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Re: LPG running problems
« Reply #28 on: 29 May 2011, 21:42:37 »
Glad to see you've got it fettled Albs  :y
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Lazydocker

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Re: LPG running problems
« Reply #29 on: 30 May 2011, 00:32:44 »
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YAAY !! fixed it. :)...........had a 12 hour break between shifts today, so took the plenum etc. off and had a careful look at everything. The pipe to the nozzle on no.6 was cracked where it goes onto the nozzle and was bent too tight where it comes out of the nozzle.Chopped 1cm off the end and carefully rerouted it and alls well. Wouldnt be such a pita if the nozzles had have been drilled in a better place during installation, but its sorted now. :) :)

Great news... Told you it had to be "related" to the work you had done ;) ;)
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