intank fuel pump

atco · May 20th, 2019, 21:02

my 740 seems to be suffering from fuel not getting to the engine .the car wont start and a machanic said to replace the fuel relay .ive now changed the relay but still not starting.checked the pump and its no good so i replaced it and it still wont start.how do i check the intank fuel pump is not working.maybe i should have changed all three at the same time.

Stephen Edwin · May 20th, 2019, 22:02

Sorry you've got that problem.

I would stop spending money for a while. Instead concentrate on trying to establish the cause. It could be as simple as a fuse.

I suspect the forum "experts" will be along soon to advise you as to diagnostic techniques.

mocambique-amazone · May 20th, 2019, 22:10

At first: Do you own a ball made of glass?
I do not

What year this 740 is made?
Carb (I don't thik so)?
K-Jet?
LH2.2?
LH2.4?
Diesel?
B280 (V6)?

without to know this I can't help you, other may be more wise (or own a ball made of glass)

good night, Kay

Laird Scooby · May 20th, 2019, 22:43

Quote:

Originally Posted by mocambique-amazone

At first: Do you own a ball made of glass?
I do not

What year this 740 is made?
Carb (I don't thik so)?
K-Jet?
LH2.2?
LH2.4?
Diesel?
B280 (V6)?

without to know this I can't help you, other may be more wise (or own a ball made of glass)

good night, Kay

Kay - if memory serves it's a 1988 B230E K-Jet. Would also be helpful to know if it's an estate to know if the 3-pole connector in the cubby hole to the left of the spare wheel wel is easily found. Then use a slave battery to feed the in-tank pump directly.

atco · May 20th, 2019, 22:50

hi dave yes your right its a saloon 230e

aardvarkash10 · May 21st, 2019, 05:18

diagnosis, or a cheque book and dice.

Make a choice.

If the choice is diagnosis, what tools do you have?

If the choice is cheque books and dice, just keep replacing stuff until it goes again.

Out of interest, what led your mechanic to diagnose the fuel pump relay?

May 20th, 2019, 21:02	#1
atco Senior Member Last Online: Oct 8th, 2023 19:49 Join Date: Apr 2009 Location: cardiff	intank fuel pump my 740 seems to be suffering from fuel not getting to the engine .the car wont start and a machanic said to replace the fuel relay .ive now changed the relay but still not starting.checked the pump and its no good so i replaced it and it still wont start.how do i check the intank fuel pump is not working.maybe i should have changed all three at the same time.

May 20th, 2019, 22:50	#5
atco Senior Member Last Online: Oct 8th, 2023 19:49 Join Date: Apr 2009 Location: cardiff	fuel pump hi dave yes your right its a saloon 230e

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May 20th, 2019, 22:02	#2
Stephen Edwin Premier Member Last Online: Oct 26th, 2023 20:42 Join Date: Jun 2010 Location: Thurrock	Sorry you've got that problem. I would stop spending money for a while. Instead concentrate on trying to establish the cause. It could be as simple as a fuse. I suspect the forum "experts" will be along soon to advise you as to diagnostic techniques.

May 20th, 2019, 22:10	#3
mocambique-amazone Master Member Last Online: Jan 24th, 2022 17:08 Join Date: Nov 2008 Location: small village in the north of Germany	At first: Do you own a ball made of glass? I do not What year this 740 is made? Carb (I don't thik so)? K-Jet? LH2.2? LH2.4? Diesel? B280 (V6)? without to know this I can't help you, other may be more wise (or own a ball made of glass) good night, Kay

May 21st, 2019, 05:18	#6
aardvarkash10 Master Member Last Online: Oct 8th, 2022 22:22 Join Date: Sep 2016 Location: Auckland	diagnosis, or a cheque book and dice. Make a choice. If the choice is diagnosis, what tools do you have? If the choice is cheque books and dice, just keep replacing stuff until it goes again. Out of interest, what led your mechanic to diagnose the fuel pump relay?

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