740 refuses to start for more than a second! - Page 3

ian2000t · May 18th, 2009, 12:11

Mate, the pump is not making any sound at all.

Tried taking out the fuse for the Main pump and checking there's a 12V feed still to the tank pump and it's silent... nothing at all.

Also tried connecting the tank pump directly to the battery and it does nout... no whirring at all.

grass hopper · May 18th, 2009, 12:23

looks like a new pump and pipe Ian

ian2000t · May 18th, 2009, 12:24

Just ordered from Simon at FRF!

Clan · May 18th, 2009, 17:57

If that pipe is split the main pump wont be able to draw fuel up unless the tank is pretty well full then it will start . May as well replace the tank pump and hose ..

I have a tank unit complete in the attic i believe .

ian2000t · May 22nd, 2009, 00:19

Ok, received my parts from FRF today.

This is a picture of the tank unit. The convoluted hose you can see is split. Now the whole assembly can slide up and down, which is only possible because of the convoluted hose.

However, ordered a replacement hose from the diagram:

And it's turned up to be about a foot of standard fuel hose?? I can fit it with that, but it won't be able to slide up and down like it can now.

Why does the whole mechanism slide up and down?

Clan · May 22nd, 2009, 18:14

The mechanism slides to compensate for the bottom of the plastic tank sagging when full of fuel ... the reason they supplied a straight length is that the convoluted hose is no longer available and some bright non engineer spark decided a piece of ordinary hose would so . You might find a convoluter hose elsewhere .

ian2000t · May 23rd, 2009, 10:42

Thanks for your help guys and thanks Simon at FRF for the parts - just a shame the convoluted hose isn't available anymore.

It's all back together and working now, and there is definitely a whirring from the tank that there wasn't before!

Cheers guys...... here's to hoping the Mini doesn't break now!!

grass hopper · May 23rd, 2009, 11:38

Good news,glad its running now

May 18th, 2009, 12:11	#21
ian2000t Premier Member Last Online: Oct 21st, 2023 20:25 Join Date: Dec 2008 Location: Halesowen	Mate, the pump is not making any sound at all. Tried taking out the fuse for the Main pump and checking there's a 12V feed still to the tank pump and it's silent... nothing at all. Also tried connecting the tank pump directly to the battery and it does nout... no whirring at all. __________________ 1990 Volvo 760 GLE D24TIC ZF22 - 16psi, more fuel, Monark 293 nozzles, 40mm lower, Bilstein TCs, 24/19 ARBs, full Polybushed front, H&R spacers, 17" Titans. Running Veg oil/petrol mix. Past: 1988 Volvo 740 B230E M46, 1991 Volvo 940 B230FB M47

May 18th, 2009, 12:24	#23
ian2000t Premier Member Last Online: Oct 21st, 2023 20:25 Join Date: Dec 2008 Location: Halesowen	Just ordered from Simon at FRF! __________________ 1990 Volvo 760 GLE D24TIC ZF22 - 16psi, more fuel, Monark 293 nozzles, 40mm lower, Bilstein TCs, 24/19 ARBs, full Polybushed front, H&R spacers, 17" Titans. Running Veg oil/petrol mix. Past: 1988 Volvo 740 B230E M46, 1991 Volvo 940 B230FB M47

May 18th, 2009, 17:57	#24
Clan Experienced Member Last Online: Yesterday 22:03 Join Date: Jun 2007 Location: L/H side	If that pipe is split the main pump wont be able to draw fuel up unless the tank is pretty well full then it will start . May as well replace the tank pump and hose .. I have a tank unit complete in the attic i believe . __________________ My comments are only based on my opinions and vast experience .

May 22nd, 2009, 00:19	#25
ian2000t Premier Member Last Online: Oct 21st, 2023 20:25 Join Date: Dec 2008 Location: Halesowen	Ok, received my parts from FRF today. This is a picture of the tank unit. The convoluted hose you can see is split. Now the whole assembly can slide up and down, which is only possible because of the convoluted hose. However, ordered a replacement hose from the diagram: And it's turned up to be about a foot of standard fuel hose?? I can fit it with that, but it won't be able to slide up and down like it can now. Why does the whole mechanism slide up and down? __________________ 1990 Volvo 760 GLE D24TIC ZF22 - 16psi, more fuel, Monark 293 nozzles, 40mm lower, Bilstein TCs, 24/19 ARBs, full Polybushed front, H&R spacers, 17" Titans. Running Veg oil/petrol mix. Past: 1988 Volvo 740 B230E M46, 1991 Volvo 940 B230FB M47

May 22nd, 2009, 18:14	#26
Clan Experienced Member Last Online: Yesterday 22:03 Join Date: Jun 2007 Location: L/H side	The mechanism slides to compensate for the bottom of the plastic tank sagging when full of fuel ... the reason they supplied a straight length is that the convoluted hose is no longer available and some bright non engineer spark decided a piece of ordinary hose would so . You might find a convoluter hose elsewhere . __________________ My comments are only based on my opinions and vast experience .

May 18th, 2009, 12:23	#22
grass hopper Premier Member Last Online: Mar 18th, 2011 13:38 Join Date: May 2009 Location: grassmere!	looks like a new pump and pipe Ian

May 23rd, 2009, 10:42	#27
ian2000t Premier Member Last Online: Oct 21st, 2023 20:25 Join Date: Dec 2008 Location: Halesowen	Thanks for your help guys and thanks Simon at FRF for the parts - just a shame the convoluted hose isn't available anymore. It's all back together and working now, and there is definitely a whirring from the tank that there wasn't before! Cheers guys...... here's to hoping the Mini doesn't break now!! __________________ 1990 Volvo 760 GLE D24TIC ZF22 - 16psi, more fuel, Monark 293 nozzles, 40mm lower, Bilstein TCs, 24/19 ARBs, full Polybushed front, H&R spacers, 17" Titans. Running Veg oil/petrol mix. Past: 1988 Volvo 740 B230E M46, 1991 Volvo 940 B230FB M47

May 23rd, 2009, 11:38	#28
grass hopper Premier Member Last Online: Mar 18th, 2011 13:38 Join Date: May 2009 Location: grassmere!	Good news,glad its running now

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