Engine light on!!Urgent!Autogas

keir1163 · 14th February 2010, 17:49

Guys,
today i have been uninstalling a Autogas system in preperation for a new install (which i am half way through) however now the car will not start, the engine light is on.......the car tries to fire but does not....fuel is at the fuel pipes under the engine.

now i think i had this issue before and it was a simple fix but i cannt remember what i did to cure it!
The only thing is that i added some leads that interupt the injectors, However all they do is join in the system and as the autogas is not live it shouldnt make any odds.......i donnt think, i assume that they only shut the fuel off when the system is live???

any help would be greatly received

Greeners · 14th February 2010, 18:06

take off what ever you've added, and try again.

keir1163 · 14th February 2010, 18:17

Quote:

Originally Posted by Greeners

take off what ever you've added, and try again.

yeah gonna do that tommorrow....................The only thing that is in the system is the injector shut off.....so my money is on that but as you know the injectors are under that **** inlet and i was just eliminating the options before i took it off for a 6th time!

Bernard LPG · 14th February 2010, 19:03

You have got the LPG ECU connected to the injector cuts I presume?
No circuit without it.

keir1163 · 14th February 2010, 19:28

Quote:

Originally Posted by Bernard LPG

You have got the LPG ECU connected to the injector cuts I presume?
No circuit without it.

Hi B,
well i have done both and it donnt fire either way.
The only thing i am short of is an ignition feed to the ECU (gas) .....i am thinking that the Injectors oare cutting the Gas out.........
Its a Morelli System , Steve from Hytek is helping me to fit....which looks easy and i have done most stuff bar the above....................but i assumed if i disconnected it all then the Gas side would not work leaving the Injectors open?

I suppose the way of telling is to take the injector cuts off...........
would rather not as its a pain.

i stripped out the old Marini system compleytely and reconnected the origional wires and it donnt work......so i assume its the injector feeds?

keir1163 · 14th February 2010, 19:32

Quote:

Originally Posted by keir1163

Hi B,
well i have done both and it donnt fire either way.
The only thing i am short of is an ignition feed to the ECU (gas) .....i am thinking that the Injectors oare cutting the Gas out.........
Its a Morelli System , Steve from Hytek is helping me to fit....which looks easy and i have done most stuff bar the above....................but i assumed if i disconnected it all then the Gas side would not work leaving the Injectors open?

I suppose the way of telling is to take the injector cuts off...........
would rather not as its a pain.

i stripped out the old Marini system compleytely and reconnected the origional wires and it donnt work......so i assume its the injector feeds?

that all said...........................would the ECU need programming before even the petrol side worked? I was informed it would be ok before setting it up

Bernard LPG · 14th February 2010, 19:35

Just link together each pair of cuts temporarily thus taking the LPG unit out of the equation.

Bernard LPG · 14th February 2010, 19:38

Quote:

Originally Posted by keir1163

that all said...........................would the ECU need programming before even the petrol side worked? I was informed it would be ok before setting it up

No, the petrol injector leads are switched by normally closed relay contacts. They are in circuit when there is no power to the gas ECU.

keir1163 · 14th February 2010, 19:43

Quote:

Originally Posted by Bernard LPG

No, the petrol injector leads are switched by normally closed relay contacts. They are in circuit when there is no power to the gas ECU.

ok..........
when i got the loom it had these leads attached..........i unplug one origional injector feed and plug it into a plug and the new lead plugs into the injector.
it repleces the origional leads.........or have i done it arese around face and plugged the fly lead into the wrong bit. Maybe i have plugged them in the wrong way
it does make sort of sense

Bernard LPG · 14th February 2010, 20:17

Quote:

Originally Posted by keir1163

ok..........
when i got the loom it had these leads attached..........i unplug one origional injector feed and plug it into a plug and the new lead plugs into the injector.
it repleces the origional leads.........or have i done it arese around face and plugged the fly lead into the wrong bit. Maybe i have plugged them in the wrong way
it does make sort of sense

Aah! Looms. Then there is a good possibility that you have the wrong set of cuts.
There are two types - inverted and non-inverted. The cuts could be in the wrong wires.

One of the reasons that I cut'n'shut the injector wires near to the ECU wherever possible.

Although thinking about it, I don't think that would prevent running on petrol. Would prevent running on gas, certainly.

14th February 2010, 17:49	#1
keir1163 Loves to post MG ZT+ CDTi Join Date: Jul 2009 Location: castle hedingham Posts: 476 Thanks: 0 Thanked 4 Times in 2 Posts	Engine light on!!Urgent!Autogas Guys, today i have been uninstalling a Autogas system in preperation for a new install (which i am half way through) however now the car will not start, the engine light is on.......the car tries to fire but does not....fuel is at the fuel pipes under the engine. now i think i had this issue before and it was a simple fix but i cannt remember what i did to cure it! The only thing is that i added some leads that interupt the injectors, However all they do is join in the system and as the autogas is not live it shouldnt make any odds.......i donnt think, i assume that they only shut the fuel off when the system is live??? any help would be greatly received __________________ Let Battle Commence

14th February 2010, 18:06	#2
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	take off what ever you've added, and try again. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

14th February 2010, 19:03	#4
Bernard LPG I really should get out more....... 75 V6 Saloon 2003 LPG MGZT V8 260 LPG Join Date: Dec 2006 Location: Evesham Posts: 2,134 Thanks: 0 Thanked 1 Time in 1 Post	You have got the LPG ECU connected to the injector cuts I presume? No circuit without it.

14th February 2010, 19:35	#7
Bernard LPG I really should get out more....... 75 V6 Saloon 2003 LPG MGZT V8 260 LPG Join Date: Dec 2006 Location: Evesham Posts: 2,134 Thanks: 0 Thanked 1 Time in 1 Post	Just link together each pair of cuts temporarily thus taking the LPG unit out of the equation.