Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: richard on 14 July 2010, 10:47:11

Title: Fuel Pump failed
Post by: richard on 14 July 2010, 10:47:11
Hi Gents

My miggie has just given up the ghost.

Its a 2.2 LPG 2003 118k.   Runs ok on LPG but now nothing on petrol.

AA says the fuel pump is not working ?

Thoughts ?

Is it difficult to change  as I cannot find a how to ?

Thanks in advance.
Title: Re: Fuel Pump failed
Post by: RobG on 14 July 2010, 10:55:44
Have you checked fuse #18 :question
Title: Re: Fuel Pump failed
Post by: richard on 14 July 2010, 11:00:02
Yep

AA man metered the plug at the top of pump
Title: Re: Fuel Pump failed
Post by: RobG on 14 July 2010, 11:03:03
The fuse was physically checked or did he just whack a meter on the pump connector
Title: Re: Fuel Pump failed
Post by: richard on 14 July 2010, 11:03:44
checked fuse as well with meter
Title: Re: Fuel Pump failed
Post by: RobG on 14 July 2010, 11:05:10
Are you saying that you have power to the pump
Title: Re: Fuel Pump failed
Post by: richard on 14 July 2010, 11:11:04
The AA man said that there is power to the pump but he could not hear it spinning
Title: Re: Fuel Pump failed
Post by: raywilb on 14 July 2010, 17:04:50
where abouts are you. theres a great "how to" covering a diesel but the petrol is the same regards removal & fitting.  :y


























7
Title: Re: Fuel Pump failed
Post by: Omegatoy on 14 July 2010, 18:10:49
had this on a couple of lpg,d cars of mine, anwer was to remove the connector and use wire to try to run the pump backwards for a very brief moment,(just flash the conections basically) then connect the correct way with the jump cables to make sure it runs, :y
Title: Re: Fuel Pump failed UPDATE
Post by: richard on 14 July 2010, 22:23:24
Got a pump and filter and a willing mate.

Took cover off tank and checked again and we can definitely hear the pump so abandoned the job.  Runs on gas but not petrol .. it just dies as if no fuel..

messing about and it started to run ok on petrol just left it idling on petrol nice and smooth and then it just switched back to really lumpy and stalled.

Help me !!!!!!!!!!!!!!! beginning to hate the miggie ( Love her really)

Title: Re: Fuel Pump failed
Post by: Agemo on 14 July 2010, 22:27:11
If it runs on LPG, why are you worried about Petrol?  ::)
Title: Re: Fuel Pump failed
Post by: richard on 14 July 2010, 22:28:15
needs to start on petrol
Title: Re: Fuel Pump failed
Post by: Entwood on 14 July 2010, 22:33:49
When was the fuel filter last changed - might be blocked ??

Are all the fuel lines ok - its not sucking in air at all ??

Have you tried disconnecting a fuel pipe and using the pump to pump through .. that would check the the pump is picking up fuel OK.

Check the Fuel Pressure Regulator .. it might be sticking shut.

about all I can think of right now ....
Title: Re: Fuel Pump failed
Post by: richard on 18 July 2010, 17:35:27
UPDATE

replaced fuel pump and filter now ticking over but sometimes dying and when trying to drive it feels like i am towing a elephant !!!

LPG still ok. 

Could it be too much REDEX as I popped some in thinking it would help ??

Thanks anyone who can help

Rich
Title: Re: Fuel Pump failed
Post by: Agemo on 18 July 2010, 19:05:35
Sorry, good point, sounds like the pump was fine then. Is it worth giving all the fuel lines a blast of compressed air to make sure they are clear?

Quote
needs to start on petrol
Title: Re: Fuel Pump failed
Post by: richard on 23 July 2010, 10:54:57
AHHHHHHHHHHHHH !!!

so its in the garage and now being told that its an ECU as no signal to the injectors. !!!

It starts but runs very lumpy on petrol  all ok  on LPG though
Title: Re: Fuel Pump failed
Post by: Kevin Wood on 23 July 2010, 11:09:51
It's not the ECU.

If there were no signal to the injectors it wouldn't run on LPG as the LPG system relies on the injector signals from the main ECU.

Possibly it's something in the LPG system but I would question their diagnostic capabilities, TBH.

Kevin

Title: Re: Fuel Pump failed
Post by: Kevin Wood on 23 July 2010, 11:16:01
As I recall, this car has always run poorly on petrol and has been getting worse. I remember we looked it a while ago...

No signal to petrol injectors would be a sudden thing, and VERY unlikely to affect all 4 injectors at once.

It sounds to me like something in the petrol supply side has been gradually failing. Perhaps the pump is no longer able to supply the rated fuel pressure and has been gradually dying, the FPR is not regulating the correct pressure any more, filter or injectors getting clogged perhaps?

I know some of these items have been changed but this is the line of diagnosis that needs to be followed, IMHO.

If you'd like to bring it over sometime I'd be happy to have another look.

Kevin
Title: Re: Fuel Pump failed
Post by: richard on 23 July 2010, 11:23:03
thanks Kevin

The garage have an electrical man due in monday who will take a look but it would be great if you could have a look.  I will be in touch next week.
Fuel pump and filter changed last week.

Richard

Title: Re: Fuel Pump failed
Post by: richard on 10 August 2010, 21:44:30
Update

So the story goes on .....the auto electrician has had a look and thinks that its the fuel pump relay.. Ones on order ..

Any thoughts

Thanks again in advance
Title: Re: Fuel Pump failed
Post by: PhilRich on 10 August 2010, 21:57:39
Quote
Update

So the story goes on .....the auto electrician has had a look and thinks that its the fuel pump relay.. Ones on order ..

Any thoughts
Thanks again in advance




Might be better to let Kevin have a look before any (more) parts are ordered? ;) :y
Title: Re: Fuel Pump failed
Post by: Kevin Wood on 11 August 2010, 00:19:37
Quote
Update

So the story goes on .....the auto electrician has had a look and thinks that its the fuel pump relay.. Ones on order ..

Any thoughts

Thanks again in advance

That can easily be checked by bridging the two contacts so it runs continuously. :y

Kevin