Fuel Tank Breather '87 740gl

146ken · Jul 30th, 2006, 13:12

Having replaced both fuel pumps, (front one excessively noisy, in-tank not working), have discovered the fuel tank breather is blocked. Car drives for about 10 mins from cold then runs out of fuel. Open filler cap, whoosh noise, leave cap off and runs fine, put it back on problem returns and pumps make straining noise.
How do I sort the breather problem, or is there a way of getting around this?

740Estate · Jul 30th, 2006, 13:26

I would be looking at the cap. Maybe replacing it. Im sure they vent thru the cap. (could be wrong though)

146ken · Aug 1st, 2006, 13:37

Checked fuel cap and now venting but problem not cured, I'll start another thread to give more details.
Ta.

Jul 30th, 2006, 13:12	#1
146ken VOC Member Last Online: Jul 16th, 2022 19:08 Join Date: Feb 2006 Location: Exeter View Photos By: 146ken	Fuel Tank Breather '87 740gl Having replaced both fuel pumps, (front one excessively noisy, in-tank not working), have discovered the fuel tank breather is blocked. Car drives for about 10 mins from cold then runs out of fuel. Open filler cap, whoosh noise, leave cap off and runs fine, put it back on problem returns and pumps make straining noise. How do I sort the breather problem, or is there a way of getting around this?

Jul 30th, 2006, 13:26	#2
740Estate Undercover 740 Last Online: Jun 2nd, 2007 12:14 Join Date: Nov 2003 Location: Cambs View Photos By: 740Estate	I would be looking at the cap. Maybe replacing it. Im sure they vent thru the cap. (could be wrong though) __________________ 1991 960 3.0 24v - Project Dark ------------------------------------------------ "Ah, isn't that nice, the wife of the Cambridge president is kissing the cox of the Oxford crew." -- Harry Carpenter, BBC TV, Boat Race 1977. ------------------------------------------------ Slidin' it round past the apex of reality Last edited by 740Estate; Jul 30th, 2006 at 13:31.

Aug 1st, 2006, 13:37	#3
146ken VOC Member Last Online: Jul 16th, 2022 19:08 Join Date: Feb 2006 Location: Exeter View Photos By: 146ken	Checked fuel cap and now venting but problem not cured, I'll start another thread to give more details. Ta.

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