Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: ians on 15 October 2007, 15:48:12
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I'm not sure if I have a problem or not on my 3.0.. :-/
- When relieving the fuel rail pressure prior to removal (when changing cam cover seals), I got nothing out of the valve at all (my 2.5 gave a squirt of fuel). Car had been sitting for a week but I was still surprised.
- When I pulled fuse 18 to disable the fuel pump to change fuel filter the engine died instantly - my 2.5 ran on for a few seconds, I assume as the remaining fuel/pressure disapated.
- I've convinced myself there is a faint smell of fuel above the offside of the engine.
No visible leaks, and seems to start and run ok (although only had the car on the road a couple of weeks so not much to compare it to).
Do I have a problem? I'm wondering if injectors are leaking or something of the kind..
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Most likely cause is that either the fuel pressure regulator is not sealing fully, allowing some flow down the return line even when the fuel line pressure is low, or the non-return valve in the pump is allowing reverse flow back to the tank as soon as the pump stops.
I think if the injectors were that leaky you'd have starting issues.
Worth checking for leaks as well, though.
As long as it starts reliable I wouldn't say it's a cause for concern. Might be worth swapping out the FPR, if it's that, just in case the fuel pressure is no longer correct due to the fault.
Kevin
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Thanks Kevin.
Where is the FPR located? Do you know if the seal can be changed or is it a replace FPR job?
Other than being a real gas guzzler compared to my 2.5 manual I think its running fine. Look forward to getting the ATF s/w update though.
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I think the FPR is a sealed unit. Should be mounted on the fuel rail, IIRC. It's a little cylindrical device connected to the return fuel line. I'd get one from a scrapper and see if it holds pressure then. Either that or take the current one out and see if you can blow through it from the fuel rail side. That might tell you if it's sealing.
Kevin
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I've convinced myself there is a faint smell of fuel above the offside of the engine.
That's where I thought I first smelled mine when my fuel feed pipe from the pump cover
plate corroded at the rear of the car.
Hot air from around the hot engine rises, this draws air in from around the car to fill the
space it creates. Thus the smell from the engine area. If you are loosing fuel pressure
when standing, it's well worth checking your fuel lines right back to the tank.
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Grumpy - I remember your post on that and its certainly on my list to check out.
Cheers
Ian