No Fuel

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WelshBentleyBoy
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No Fuel

Post by WelshBentleyBoy »

The sun was out so I took the 635 out for a blast, The tank showed a quarter full but it started to cough and splutter and then stopped. I put a few litres in and it still coughed and spluttered but eventually cleared after a lot of revving and ran normally. Is this low fuel or the old complaint of "S**t in the carburetor"?
Paul
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wattsmonkey
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Re: No Fuel

Post by wattsmonkey »

Assuming you haven't fitted carbs, the in tank pump going South usually means spluttering unless more than 1/4 tank of fuel.
"Most of it necessary; all of it enjoyable." LJKS
'84 635CSi, dogleg...itbs and supercharger????? Eaton Mess
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WelshBentleyBoy
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Re: No Fuel

Post by WelshBentleyBoy »

It has just died again and I have had trip to the local Indie on a transporter. This time it had a full tank. I suspect a fuel pump but will clarify when they have had a good look at it.
Paul
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Re: No Fuel

Post by wattsmonkey »

The only breakdown I've experienced in anything M30 engined was the sudden failure of the fuel pump on my M535i. Hope all sorted soon.
"Most of it necessary; all of it enjoyable." LJKS
'84 635CSi, dogleg...itbs and supercharger????? Eaton Mess
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Hefeweizen
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Re: No Fuel

Post by Hefeweizen »

I would try a number smaller and check the fuel pump relay first. After your car died, check for voltage on the inline fuel pump since it is easier to get to than the intank (provided you have both). The inline is on the passenger side in the rear and the intank, you get access by removing the lid under the carpet.
Rainer
03 330Xi (DD)
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80 633CSi (Red Euro, Project)

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WelshBentleyBoy
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Re: No Fuel

Post by WelshBentleyBoy »

My Techie says it is the L Shaped idle control valve. he has tried cleaning it but it is seized solid. Thanks to Ron I have sourced a replacement which should do the trick!
Paul
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WelshBentleyBoy
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Re: No Fuel

Post by WelshBentleyBoy »

Still not cured. It runs and drives normally for about 5 minutes then coughs splutters and dies. Indie has suggested it may be the air mass sensor. Any suggestions?
Paul
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ron
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Re: No Fuel

Post by ron »

WelshBentleyBoy wrote: Sat Jun 02, 2018 7:43 am Indie has suggested it may be the air mass sensor.
I have one of those as well!
They are ALWAYS rustier than you thought!!!!!!
'85 M #228
'87 M #367
'88 High line.
'10 X5
‘84 Alfasud 1.5 ti
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WelshBentleyBoy
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Re: No Fuel

Post by WelshBentleyBoy »

Thanks Ron.

They have arranged to borrow one next week and see if it sorts the problem. I will report back.


Paul
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