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[megaomega123]

Ok. I have added an earth lead to the ECU, no change. I serviced my original filter and put that back on, no change.
LPG seems to run fine above 2500 rpm anything below that is lumpy and misfire like. Also blanked EGR whilst there and no change.
I am at a bit of a loss now. I can get it back on the laptop on Friday so will post some screenshots.
Any thoughts or ideas welcome.

[Lazydocker]

If you've got a smell of gas then there is a leak somewhere!

Yesterday we replaced the injector pipes on Johnnycboy's 2.5 and I was shocked at the state of them! Bearing in mind his was professionally converted about 8 months ago the injector pipes were perished and cracked already!

[megaomega123]

If you've got a smell of gas then there is a leak somewhere!

Yesterday we replaced the injector pipes on Johnnycboy's 2.5 and I was shocked at the state of them! Bearing in mind his was professionally converted about 8 months ago the injector pipes were perished and cracked already!

I think thats the way to go. Down the passenger bank. I kinked the pipes from injectors yesterday to see if it affected engine tone and running and number 4 seemed to make little difference when kinked.
I couldn't get the blasted accelerator cable off it's ball, I think its been squeezed tight grrr it's very soft and I don't want to damage it. Need to set aside a day for this I think.

[Lazydocker]

If you've got a smell of gas then there is a leak somewhere!

Yesterday we replaced the injector pipes on Johnnycboy's 2.5 and I was shocked at the state of them! Bearing in mind his was professionally converted about 8 months ago the injector pipes were perished and cracked already!

I think thats the way to go. Down the passenger bank. I kinked the pipes from injectors yesterday to see if it affected engine tone and running and number 4 seemed to make little difference when kinked.
I couldn't get the blasted accelerator cable off it's ball, I think its been squeezed tight grrr it's very soft and I don't want to damage it. Need to set aside a day for this I think.

Neither could I on mine... In the end I left it attached and just moved everything about to make room

[megaomega123]

Had the LPG on the laptop today. Found out that the overly high rpm was down to the coil setting, which is now correct and reading true. This would also discount the crankshaft sensor as being the problem.
I switched off each injector in turn and found that with no.4 turned off it idles and runs perfectly.
Can I conclude that there is a leak at no.4 or that the injector is goosed?
I have posted some screenshots of the software whilst at idle. Maybe Kevin Wood may like to check them for me

[Lazydocker]

Do I recall you mentioning a smell of gas?

Screen shots seem to be OK, although (and it's difficult to tell from a snapshot) it looks like your Lambda sensors may be playing up... I've got a lazy one and I think it's the heater which has packed up as it's fine at anything other than idle

[Kevin Wood]

Gas temperature looks a little high. Maybe the setting for that sensor is wrong? (there's certainly one that had to be changed from the default).

If you've got a smell of gas and a misfire on no.4 it might be worth taking the plenum off and making sure all is well with the pipe down to the nozzle. Failing that maybe the injector for that cylinder is blocked or in need of a clean. I would be inclined to speak to Jeremy / Teilo about that. Never taken one apart myself.

Lambda activity does look a little erratic but so was engine operation during that log. Does it settle down to a slow switching after idling for a while?

Kevin

[megaomega123]

It completely settles if I switch off 4,5 and 6. 4 is the worst with 5 and 6 not tiptop. I think the whole bank needs a little attention tbh.
I have tried all settings for the sensors and this seems the only setup that works. Weather permitting Ill get the plenum and inlet off tomorrow and check all is well down there.
What are the consequences of running it with injector 4 switched off for the time being? I presume it uses petrol on just that 1 cylinder?

[Lazydocker]

It completely settles if I switch off 4,5 and 6. 4 is the worst with 5 and 6 not tiptop. I think the whole bank needs a little attention tbh.
I have tried all settings for the sensors and this seems the only setup that works. Weather permitting Ill get the plenum and inlet off tomorrow and check all is well down there.
What are the consequences of running it with injector 4 switched off for the time being? I presume it uses petrol on just that 1 cylinder?

Yep, that's correct. Perhaps you've picked up some iffy gas somewhere and blocked the injectors :-/ :-/ :-/

I'm sure Teilo will be able to advise and he'll supply the required parts at a good price

[megaomega123]

Do I recall you mentioning a smell of gas?

Screen shots seem to be OK, although (and it's difficult to tell from a snapshot) it looks like your Lambda sensors may be playing up... I've got a lazy one and I think it's the heater which has packed up as it's fine at anything other than idle

I know the vac pipe for the SAI was taken to feed a part of the LPG so maybe it is that. :-/

[Kevin Wood]

If you've got a leaky nozzle hose on no.4 it will be leaking air into that bank, so it will affect the lambda loop for that bank so I'm not surprised all 3 cylinders are less then perfect.

The T piece for the SAI feed was used to feed the LPG pressure sensor reference port as the SAI didn't work anyway. Can't see how that would contribute, TBH. :-/

Kevin

[Lazydocker]

If you've got a leaky nozzle hose on no.4 it will be leaking air into that bank, so it will affect the lambda loop for that bank so I'm not surprised all 3 cylinders are less then perfect.

The T piece for the SAI feed was used to feed the LPG pressure sensor reference port as the SAI didn't work anyway. Can't see how that would contribute, TBH. :-/

Kevin

I'll take Kevin's word on that one as he's seen the car

But from what he's said I'd be very surprised if that was the cause

[megaomega123]

I'll take Kevin's word too, mainly as I don't know what I am talking about  
Well I think we may have managed to narrow the problem down at least. As I said, I will attempt to get at the pipes and nozzles tomorrow and report back any findings.
Would it be best to arm myself with the appropriate hoses, in case of replacement, before taking apart? If so, where is the best place to get it from?

[Lazydocker]

I'll take Kevin's word too, mainly as I don't know what I am talking about  
Well I think we may have managed to narrow the problem down at least. As I said, I will attempt to get at the pipes and nozzles tomorrow and report back any findings.
Would it be best to arm myself with the appropriate hoses, in case of replacement, before taking apart? If so, where is the best place to get it from?

Until Tuesday I'd have said me as I had some spare but it's been used already

You'll probably struggle to get hold of any unless you can find somewhere LPG that is open on Good Friday

[megaomega123]

Just spoken to an lpg installer and he suggested that the problem is more likely to be an injector than a leaky pipe.
Can the injectors be serviced? If not is it possible to buy the stag-300 injectors seperately somewhere?