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[berserkerboy]

It's easier to check fuel feed by removing the feed pipe at manifold, then having wife crank engine while you point the pipe into a jar.
Is it possible you put in diesel, not petrol?

Only if station had wrong fuel in tank as receipt says unleaded.

[berserkerboy]

It's easier to check fuel feed by removing the feed pipe at manifold, then having wife crank engine while you point the pipe into a jar.
Is it possible you put in diesel, not petrol?

I'd like to try this. Is it obvious where the feed pipe at manifold is?

[Nick W]

It's easier to check fuel feed by removing the feed pipe at manifold, then having wife crank engine while you point the pipe into a jar.
Is it possible you put in diesel, not petrol?

Just unscrew the valve core in the pressure port.

[TD]

Does it start ok if you false start it on LPG?

I think I did this and yes it was running okay until I turned it off again. How do you false start on LPG so I can try that again? The system is stag 300 plus.
I think as it was running okay on gas that maybe the crank sensor is okay.
I have been reading that LPG cars sometimes get a petrol pump failure due to running around with 1/4 tank of fuel.
New filter ordered and can get a new pump for £20 if necessary.

Its normally if you press the lpg button in and try to start it at the same time.....if the button is pressed at the same time as starting it will start on lpg.....altho it will be lumpy as the engine hasn't got warm and heated the lpg side 

[Doctor Gollum]

Put 2 more gallons in and report back...

[berserkerboy]

Good news and bad news.

False started on LPG. Engine ran.
I then put more petrol in so I am just under 1/2 full and car started on petrol.
Wish I'd tried first again on petrol before I did anything as it would have revealed more if the car started.
As it stands I guess it could still be crank sensor if no code is generated as now the car engine is cold. Although the last time the crank sensor failed, a code was generated.
No new codes generated

[Lazydocker]

Good news and bad news.

False started on LPG. Engine ran.
I then put more petrol in so I am just under 1/2 full and car started on petrol.
Wish I'd tried first again on petrol before I did anything as it would have revealed more if the car started.
As it stands I guess it could still be crank sensor if no code is generated as now the car engine is cold. Although the last time the crank sensor failed, a code was generated.
No new codes generated

Sounds more like weak fuel pump

[berserkerboy]

Yep, I'm inclined to agree. When the car wouldn't start yesterday I inadvertantly did a false LPG start and the car ran fine. It appears to be petrol fuel related.

[Doctor Gollum]

Or it was parked on a slope...

[berserkerboy]

I've done that before.  But it wasn't on this occasion.

[berserkerboy]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

[Nick W]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

It's no different to fitting a traditional electric fuel pump.


The 'hard' part is undoing the plastic locking ring to remove the pump/float assembly.

[terry paget]

In my experience 'weak' fuel pumps, or more likely kinked fuel pipes near the fuel filter, can limit fuel delivery rate, but it does not affect starting, and only make itself known at times of sustained maximum power demand, when the engine will suddenly cut out.

[berserkerboy]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

It's no different to fitting a traditional electric fuel pump.


The 'hard' part is undoing the plastic locking ring to remove the pump/float assembly.

Yeah, I've done a few of them and can vouch for that. Was thinking of trying to make a tool of sorts to grab either side of the ring. Maybe an old pair of garden shears with a few angle grinder alterations.

However, Terry's comments on weak fuel pumps are interesting.

Gonna change the filter, get the wife to turn the ignition on to see what kind of pressure the fuel pump is giving and go from there.

[Lazydocker]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

It's no different to fitting a traditional electric fuel pump.


The 'hard' part is undoing the plastic locking ring to remove the pump/float assembly.

Yeah, I've done a few of them and can vouch for that. Was thinking of trying to make a tool of sorts to grab either side of the ring. Maybe an old pair of garden shears with a few angle grinder alterations.

However, Terry's comments on weak fuel pumps are interesting.

Gonna change the filter, get the wife to turn the ignition on to see what kind of pressure the fuel pump is giving and go from there.

That will tell you very little 😉

You could try changing the filter first though

I take out sender units all the time... there is a decent tool but it's about £50 but I find a blunted pry bat and non sparking hammer is generally the easiest way