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[leebron]

Hi. My opel omega 2.2 doesnt start. Started with bad idle rpm and blurry and died 2times. And now it doesnt start at all.
Fully working battery.
Smell gas and i hear the gas pump.
Found oil in spark plugs. (replaced rocker gasket removed all oil and installed new spark plugs.
The ignition coil works, i get spark on all plugs.

The car tries to start but doesnt get ignition.

Had some problems 6months ago. A new cam sensor (orginal at vauxhall garage) fixed it. (got fault code on egr, cam, throttle body). Car did start sometimes and in limp mode. This feels diffrent.

No codes stored. And iam out of ideas.
Could it be crank sensor or cleaning thottlebody?
Shouldnt i get error codes.

Best regards. Got alot of help last time with cam sensor. (the vauxhallgarage adviced new egr and ecu, u guys gave better advice)

[leebron]

Just to clarify;
The car doesnt fire. The alternator works and battery is good.

What can cause the car not to start and doesnt give any fault codes or lights on dash?

Crankshaft sensor? Maf sensor? Throttle Body? EGR? Fuel rail? Which pipe can i check that i get fuel to the ignition coil.

Iam not a mechanic and not sure where to look, but the cars is automatgear and i have no good garage nearby.

The car did start very badly 2-3 times first and now not all. (thats why iam guessing fuelproblem).

Cam sensor replacement was 6moths ago. (GM/vauxall) at  opel garage.

[tunnie]

Cam sensor can fail, the car will still start. Take a lot of cranking, but will fire. Crank sensor should give a code 

Sorry for the basic question and double check, but you have not lost the immobiliser chip in the key have you?

[leebron]

thx for reply.
no the key has it fob chip and no eml light blinking in dash.
cam sensor is new (gm part). last time i had camsensor fault it did start sometimes and in limp mode.

Can the ignition coil give spark but still be bad?

Can someone point out where i easily can check that fuel is coming from tank to engine. through pump and filter.
Just to determinate if i really get gasfuel to engine. I removed one spark plug and looked into the hole while cranking couldnt see any fuel coming. (maybe that isnt possible to see?)

[05omegav6]

Saloon or estate?

How much fuel in it? Is the car level?

Give the tank a thump whilst an assistant tries to start it... Might be a duff pump given the lack of codes

[leebron]

Its estate. Tank is full.
I Will have a look at the pump. Tought i heard the pump while turning key, but not so sure. Where is the pump? In the trunk/lugage? Will ask some one To turn key while listening

[05omegav6]

Stand behind the towing eye cover, put your foot as far under the car as possible and kick your toes up as someone starts the car...

If you look under the car there you will see a round shape moulded into the tank... This is where the pump is and roughly were you need to thump

Another thought has crossed my mind... It's not full of diesel is it

[leebron]

update.
i have measure 12v on cable at fuel pump. no sound or activity in pump while turning key.
no fuel at nipple near pressure regulator.

will take out the pump tomorrow and look for a new or used one.

regards.

[05omegav6]

Giving it a thump might persuade it to start

[cd 2.2]

Giving it a thump might persuade it to start

^ +1

Also check relay's and fuses to make sure all is correct and working!

I had issues with my 2.2's coil pack recently, it gave me cold starting issues and really bad idle. When you removed coil pack to test it did you check all of the rubber tubes were intact and no white marks on them??? mine went for ages with the coil pack arcing to the head before it put the eml on ... when eml did finally come on I couldn't drive it.

Check also the fuel pressure regulator vacuum hose is still on. I have heard rumours that this can cause running and starting issues if not fitted to the fuel pressure regulator .... there is also a vacuum hose on the bottom left of the throttle body, if not on/damaged that can cause issues with starting and general running !

If you think that there is no fuel getting to the engine, undo the fuel feed to the injector rail and get someone to turn the key while the pipe is in a jar ... that will give you a definite answer as to whether fuel is getting  as far as the injectors!

As far as bad coil pack / damaged plug tubes goes, it's possible for that not to throw a code (it's happened to me before) but it's not common

Hope that helps some 

[leebron]

Iam going try give it a kick the fuel tank.
If that doesnt work, i will disassemble the fuel pump from tank and try connect it directly to battery.

Dont think relay as i get 12v to pump when key is turn.

The coil rubber plugs are fine and no cables loose. And i have sparks on plugs.
Is there anyting else that can stop the pump from working besides relay and ecu?

Will test some more when i get home today. The car has been working in cold condition -20 so i just think its the fuel problem.

Thanks for the replies.

[leebron]

Tested if it comes fuel here from injector rail.

[cd 2.2]

Are the plugs wet with fuel when you remove them, especially with it having a spark but not firing

If they are still totally dry after cranking and and getting a spark, to me, that would suggest gummed up injectors maybe

Have you checked that the fuel "pumps" as far as the rail though That valve there is for pressure release (like a bicycle valve) and the rail does hold pressure ... If you're using that valve to test you are best to see if , after releasing all the rail pressure it regains it's pressure and releases fuel again! I would still pull the feed pipe off to see if it flows correctly from the pump (you only need 2 spanners and it's a fast job honest)

I wouldn't worry too much about the temperature that you were using the car in as this is very unlikely to freeze petrol ... Petrol is usually good without freezing until you get down to -40 to -60 degrees c, Diesel on the other hand is totally different and you can get problem of waxing at around -15 degrees and would need some additives if you intended using diesel anywhere near -20 degrees!

Lastly if everything seems O.k just make sure you haven't topped it up with diesel by mistake (you would tell straight away by smelling fuel you drain off ... it really does stink nasty) ! If it's full of diesel you will never get it going without flushing the fuel tank

So to summarise ... Check that fuel pumps correctly by removing the feed pipe and that flow is good, Check after trying to start the car a few times if the spark plugs are wet with fuel (it's the easiest way to tell if you have fuel feed into the engine) and Be 100% sure there is no diesel fuel in it!

Only other things I know of to check is the crank sensor (this can stop starting the engine) but it's not common for it not to put the engine light on, the above issue with a failed cam sensor (non GM camshaft sensors are useless and fail rapidly) and maybe an immobiliser fault but then you would have no spark !

Hope that gives you a bit more of an idea 

[leebron]

thanks for the replies.
i have removed pipes from the fuel pump and turn the key, there was no fuel coming from the fuel pump.
so i guess its the fuel pump as there is no activity from it.
as the tank is full with fuel(not diesel).
how do i get the fuel pump up from tank?

the pump is 15cm under fuel level. how is mounted? should i empty the tank approx 20l from fuel first?

[05omegav6]

Haynes is spot on, just wear a pair of elbow length gloves...

Before you get stuck in check fuse 18...