Saab93, 1.9tid - Air in fuel line

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Fri 7 Mar 2014 15:49
Saab93, 1.9tid - Air in fuel line - Glanrafon

Hi,

I have an 06 Saab deisel 1.9. Recently tried Vpower deisel for a tank then went to fill up again and made an expensive mistake of putting Vpower unleaded in. Pumps were nt clear.

Anyway , I had it pumped out and filled with deisel but after a few weeks driving started to have problems with what sounds like air getting into fuel line. When I turn the ignition on the noise from the tank is spluttering and spitting what sounds like air. The car starts ok and off i go but only get a mile or so before she dies. Turn ignition off and on again and she will start again and off I go for a bit, then she will cut out again.

The in tank pump was making an awfull noise one time so i got a replacement and afer hacking a hole in the floor under the back seat to get at it, i replaced it. Made no difference.So I replaced fuel filter. No good.

The garage that took the petrol out took a hose off the high pressure pump in the engine bay taking off the pressure hose clips and replacing them with jubilee clips. I thought perhaps air might be getting in there and tightened them up. No good.

So now I,m stumped. There are no signs of any leaking deisel and the hose with the jubilee clips on, when I switch on, moves like its under pressure.

Thats it....Can anyone help or suggest anything.

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Fri 7 Mar 2014 16:14
Saab93, 1.9tid - Air in fuel line - jc2

Take the jubilee clips off and put proper fuel pipe clips on;jubilee clips go "D" shaped and do not apply even pressure to small pipes.

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Fri 7 Mar 2014 17:37
Saab93, 1.9tid - Air in fuel line - Glanrafon

Bingo. I got it sussed..Thank goodness.

It occured to me that the in tank pump is dropped into a container within the tank. This container has to be fed fuel from the main tank so I took the lid off again and the pump out to discover there is a small feed hole at the bottom with a 10mm rubber valve in it which lets fuel in but not back out.

Well there was s***e in my tank and a bit of it had lodged itself in the hole so restricting the flow. Consequently the fuel was emptying out of the container and not being replaced fast enough.

So before you go to the expense of replacing a noisy in tank pump, if you can do it yourself, then whip the top off and the pump out, have a look with a torch or good light and you will see a little pink disc down the bottom. Get a bit of firm wire and have a poke about the disc.

That should clear it.....Whew...

Good thing I did nt have a garage do it..

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Fri 7 Mar 2014 17:38
Saab93, 1.9tid - Air in fuel line - Glanrafon

PS...I will get those jubilees replaced too...Thanks

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