Help under bonnet fuel pump

jb141 · 9th March 2012, 10:36

After changing thermostat last week I noticed that the under bonnet fuel pump was leaking like a good un at the top. Bought and fitted a replacement today however as soon as you turn the key it's making a very loud whirring noise. The engine will start and runs fine but it just sounds so dodgy and I don't know what to do......HELP!!!! Please!!!!!

crashmarks · 9th March 2012, 13:01

Was your old pump leaking where the metal body folds over onto the plastic top section? If it was if you tap around fold with a hammer it might re-seal mine did, go round a few times not too hard. When i fiited my new pump it was a little noisy for a few days, i aslo found that the car didnt always start instantly like it did before. I think it takes a few days for all the air to purge out of the system. After a few days it all settled down and is fine now. If its still noisy in a few days I would contact the supplier and ask what his replacement policy is. If he says you have to send yours back before he sends you another, which would mean your car was off the road for days thats when your old pump may come in handy if indeed the fix has worked. One other thing, when I had to replace my pump for a second time I replaced the short piece of rubber pipe with a 9 inch long piece. I also made a hole in the side of the plastic battery box adjacent to the pinch bolt that secures the pump clamp. The result is that I can now change the pump without having to remove the battery box or all those pipes and wires clipped to the box. All you have to be carefull of is making sure the 9 inch pipe folds into a nice "S" shape when you refit the pump to avoid kinking. I also changed the small hose clips for traditional clips with screws got them from the same place that sold the rubber hose. Clips £2.50 for 10 in stainless. Hose 8mm internal dia £2 per metre.

crashmarks · 9th March 2012, 13:17

Can I claim this as a MOD

Unclefista · 9th March 2012, 15:16

Is it the new pump that's noisy ?
I bought a cheap one and it's been fine, but I've heard that some of the cheap ones are very noisy and don't last long

James.uk · 9th March 2012, 15:20

Jules posted a warning about cheap pumps online as he had a bad batch last year.. best way is to get your pumps from him, at least if they turn out faulty Jules will change them..

...

jb141 · 10th March 2012, 00:06

The pump was leaking from the top and we did try and bang down the top edge which helped a little but fuel was still coming out. The new one when the key is turned initially is very very noisy with the pitch changing every so often as if there is air in the system after about 10 seconds the noise reduces a bit but it's still loud. The in tank pump is working or at least I can hear it. Ive taken the hose at the top of the under bonnet pump off to check fuel is coming through and trust me and the garage ceiling it is lol! I'll give it a few days and see if the noise settles. Thanks again!

jb141 · 10th March 2012, 00:08

Quote:

Originally Posted by crashmarks

Was your old pump leaking where the metal body folds over onto the plastic top section? If it was if you tap around fold with a hammer it might re-seal mine did, go round a few times not too hard. When i fiited my new pump it was a little noisy for a few days, i aslo found that the car didnt always start instantly like it did before. I think it takes a few days for all the air to purge out of the system. After a few days it all settled down and is fine now. If its still noisy in a few days I would contact the supplier and ask what his replacement policy is. If he says you have to send yours back before he sends you another, which would mean your car was off the road for days thats when your old pump may come in handy if indeed the fix has worked. One other thing, when I had to replace my pump for a second time I replaced the short piece of rubber pipe with a 9 inch long piece. I also made a hole in the side of the plastic battery box adjacent to the pinch bolt that secures the pump clamp. The result is that I can now change the pump without having to remove the battery box or all those pipes and wires clipped to the box. All you have to be carefull of is making sure the 9 inch pipe folds into a nice "S" shape when you refit the pump to avoid kinking. I also changed the small hose clips for traditional clips with screws got them from the same place that sold the rubber hose. Clips £2.50 for 10 in stainless. Hose 8mm internal dia £2 per metre.

The adaptions you made will be done if I have to swop it again as I've lost all knuckles on one hand and those clips...........well let's just say I'm not fond!!!!

James.uk · 10th March 2012, 00:23

Personaly I wouldn't mess with a faulty pump, you need a good quality new one..

...

9th March 2012, 10:36	#1
jb141 Regular poster Rover 75 CDTi Contemporary SE Join Date: Jan 2008 Location: Alfreton Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts	Help under bonnet fuel pump After changing thermostat last week I noticed that the under bonnet fuel pump was leaking like a good un at the top. Bought and fitted a replacement today however as soon as you turn the key it's making a very loud whirring noise. The engine will start and runs fine but it just sounds so dodgy and I don't know what to do......HELP!!!! Please!!!!!

9th March 2012, 15:16	#4
Unclefista Posted a thing or two Rover 75 CDT Join Date: Sep 2011 Location: Bradford Posts: 1,478 Thanks: 1 Thanked 14 Times in 8 Posts	Is it the new pump that's noisy ? I bought a cheap one and it's been fine, but I've heard that some of the cheap ones are very noisy and don't last long __________________ Love is like a snowmobile, speeding across the frozen tundra. Which suddenly flips, pinning you underneath. At night the ice-weasels come... http://farm6.staticflickr.com/5331/6...77671f80_n.jpg

10th March 2012, 00:06	#6
jb141 Regular poster Rover 75 CDTi Contemporary SE Join Date: Jan 2008 Location: Alfreton Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts	ThankS for the replies! The pump was leaking from the top and we did try and bang down the top edge which helped a little but fuel was still coming out. The new one when the key is turned initially is very very noisy with the pitch changing every so often as if there is air in the system after about 10 seconds the noise reduces a bit but it's still loud. The in tank pump is working or at least I can hear it. Ive taken the hose at the top of the under bonnet pump off to check fuel is coming through and trust me and the garage ceiling it is lol! I'll give it a few days and see if the noise settles. Thanks again!

9th March 2012, 13:01	#2
crashmarks Loves to post Rover 75 Connoisseur SE Tourer Auto Join Date: Feb 2010 Location: Wakefield Posts: 408 Thanks: 12 Thanked 8 Times in 8 Posts	Was your old pump leaking where the metal body folds over onto the plastic top section? If it was if you tap around fold with a hammer it might re-seal mine did, go round a few times not too hard. When i fiited my new pump it was a little noisy for a few days, i aslo found that the car didnt always start instantly like it did before. I think it takes a few days for all the air to purge out of the system. After a few days it all settled down and is fine now. If its still noisy in a few days I would contact the supplier and ask what his replacement policy is. If he says you have to send yours back before he sends you another, which would mean your car was off the road for days thats when your old pump may come in handy if indeed the fix has worked. One other thing, when I had to replace my pump for a second time I replaced the short piece of rubber pipe with a 9 inch long piece. I also made a hole in the side of the plastic battery box adjacent to the pinch bolt that secures the pump clamp. The result is that I can now change the pump without having to remove the battery box or all those pipes and wires clipped to the box. All you have to be carefull of is making sure the 9 inch pipe folds into a nice "S" shape when you refit the pump to avoid kinking. I also changed the small hose clips for traditional clips with screws got them from the same place that sold the rubber hose. Clips £2.50 for 10 in stainless. Hose 8mm internal dia £2 per metre.

9th March 2012, 13:17	#3
crashmarks Loves to post Rover 75 Connoisseur SE Tourer Auto Join Date: Feb 2010 Location: Wakefield Posts: 408 Thanks: 12 Thanked 8 Times in 8 Posts	Can I claim this as a MOD

9th March 2012, 15:20	#5
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Jules posted a warning about cheap pumps online as he had a bad batch last year.. best way is to get your pumps from him, at least if they turn out faulty Jules will change them.. ...

10th March 2012, 00:23	#8
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Personaly I wouldn't mess with a faulty pump, you need a good quality new one.. ...