Connecting lpg injector hoses

[827Roverman]

It may seem a daft question but I just want to be correctly informed,
I'm nearing the end of my LPG installation and I just want to know the order in which to connect the hoses from the LPG injectors to the fuel injectors, the firing order being 1-3-4-2, now looking at the attached photo and assuming the LPG injector nearest the front is number 1, should I connect the hoses as per the firing order, I intend to use the quick fit adaptors on the fuel injectors, thank you in advance for any advice given, (I'm sure Laird Scooby gave me this advice before, but I've forgot) David

[classicswede]

It does not really matter. All that matters is that your injector cut matches the LPG injector.
All 4 cylinders fire at the same time but if your wiring does not match cylinders the switch over will be rough.

Not sure if LPG tech has the correct feature for these engine to run 100%

Your ECU is mounted upside down

The injector feed pipe might give you vibration/pulsing noises where it is mounted to the bulkhead.

[Laird Scooby]

Originally Posted by 827Roverman

It may seem a daft question but I just want to be correctly informed,
I'm nearing the end of my LPG installation and I just want to know the order in which to connect the hoses from the LPG injectors to the fuel injectors, the firing order being 1-3-4-2, now looking at the attached photo and assuming the LPG injector nearest the front is number 1, should I connect the hoses as per the firing order, I intend to use the quick fit adaptors on the fuel injectors, thank you in advance for any advice given, (I'm sure Laird Scooby gave me this advice before, but I've forgot) David

Front gas injector is #1 David, second is #2 and so on, each gas line goes from injector to cylinder of the same number - ignore the firing order!

It won't make a great deal of difference in practice as yours is "full group" aka "batch fire" injection, it's not sequential so all injectors will squirt at the same time.

Dai - FYI, the ECU is mounted correctly. I know it's not conventionally correctly but if you check the installation instructions from LPG Tech, they insist it must be mounted that way.

[827Roverman]

Originally Posted by classicswede

It does not really matter. All that matters is that your injector cut matches the LPG injector.
All 4 cylinders fire at the same time but if your wiring does not match cylinders the switch over will be rough.

Not sure if LPG tech has the correct feature for these engine to run 100%

Your ECU is mounted upside down

The injector feed pipe might give you vibration/pulsing noises where it is mounted to the bulkhead.

Hi Dia, Many thanks for your reply, the LPG Tech actually came off another 940 with the same engine (B230FK) and was running/working perfectly ok, as for the ECU being upside down, that's the way it's shown and as per Laird Scooby say's its what they show, if I do get any vibration/pulsing on the feed pipe I will try to alter its run, but it will be a while off yet before I'm up and running, Regards David.

[827Roverman]

Originally Posted by Laird Scooby

Front gas injector is #1 David, second is #2 and so on, each gas line goes from injector to cylinder of the same number - ignore the firing order!

It won't make a great deal of difference in practice as yours is "full group" aka "batch fire" injection, it's not sequential so all injectors will squirt at the same time.

Dai - FYI, the ECU is mounted correctly. I know it's not conventionally correctly but if you check the installation instructions from LPG Tech, they insist it must be mounted that way.

Hi Dave, Thank you for your reply and for confirming the order to fit the hoses, I'm getting the supply pipe from the tank to the reducer replaced this next week and wires to the tank run through into the boot for me so I don't have to be on my back under the car, plus having a few other jobs done for me, then bit by bit I hope to get all finished, just depends on how Mary is, she's not been too good these last few months with her cancer so I've been rather house bound despite the Covid 19. Regards David.