Diesel fuel pumps - Page 2

philm · 9th January 2018, 19:56

Quote:

Originally Posted by marinabrian

Ok then, the in tank pump fitted the early cars have no internal pressure relief valve, and the swirl pot pick up is grey, and on single pump cars there is a pressure relief valve set at 420 Kpa, and the swirl pot pick up is light blue.

Also the left hand side sender unit is different, along with the cross tank pipework.

The underfloor pipework is completely different of course, and the pressure regulator on the high pressure fuel pump is different.

Does that clarify things slightly more?

Brian

Thanks Brian but this is the question that,s not been answered.

my observations from looking at the top is the early one has a spout that’s straight and the later one has the same spout, but at an angle.

marinabrian · 9th January 2018, 20:16

Quote:

Originally Posted by philm

Thanks Brian but this is the question that,s not been answered.

my observations from looking at the top is the early one has a spout that’s straight and the later one has the same spout, but at an angle.

Aftermarket/BMW pump fitted to the OP's car?

The differences between the two types is as I describe Phil

Brian

Comfortably Numb · 9th January 2018, 22:57

Is there a good diagram of the Mk1 Filter, Pump and tank system, with brief explanation? Is there a simple conversion from 2 pump to one pump system on a Mk1? Does the UBP die quickly if it sucks air?

Mike Noc · 10th January 2018, 07:51

Both the low pressure fuel pumps use the fuel for cooling and lubrication, and will be damaged by overheating if they run dry for long enough.

This can happen if the car is left to idle unattended and runs out of fuel for instance.

If you run one dry on the bench it will get very hot after a few minutes.

Brian has converted a Mk I to a Mk II single pump system, so he can tell you how simple it was to do.

As far as I know there isn't a good definitive diagram of the in tank pipework - Rover themselves have put out different configurations in their technical publications.

Bit of info here on the pipework to and from the tank for the Mk I: https://the75andztclub.co.uk/forum/s...d.php?t=271389

.

e30325itourer · 10th January 2018, 17:46

Quote:

Originally Posted by marinabrian

Aftermarket/BMW pump fitted to the OP's car?

The differences between the two types is as I describe Phil

Brian

It’s the original Bmw Brian.

What I really need to know is can I put a mk1 pump into a mk2 ?

Thanks
Thomas

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marinabrian · 10th January 2018, 18:06

Quote:

Originally Posted by e30325itourer

It’s the original Bmw Brian.

What I really need to know is can I put a mk1 pump into a mk2 ?

Thanks
Thomas

Sent from my iPhone using Tapatalk

Absolutely not Thomas, they are completely different, and why do you want to do that, I've yet to see a failed single pump system pump?

Brian

e30325itourer · 10th January 2018, 18:40

Because one of the pipe on the top of mine had snapped off. And I have a mk1 breaking. The one in my car that’s broke come out at an angle I think it the return pipe.

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10th January 2018, 07:51	#14
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Both the low pressure fuel pumps use the fuel for cooling and lubrication, and will be damaged by overheating if they run dry for long enough. This can happen if the car is left to idle unattended and runs out of fuel for instance. If you run one dry on the bench it will get very hot after a few minutes. Brian has converted a Mk I to a Mk II single pump system, so he can tell you how simple it was to do. As far as I know there isn't a good definitive diagram of the in tank pipework - Rover themselves have put out different configurations in their technical publications. Bit of info here on the pipework to and from the tank for the Mk I: https://the75andztclub.co.uk/forum/s...d.php?t=271389 . Last edited by Mike Noc; 10th January 2018 at 08:14..

10th January 2018, 18:40	#17
e30325itourer Loves to post mgztt190/bmw e30 325i tourer Join Date: Sep 2015 Location: Ballyclare Posts: 316 Thanks: 50 Thanked 50 Times in 41 Posts	Because one of the pipe on the top of mine had snapped off. And I have a mk1 breaking. The one in my car that’s broke come out at an angle I think it the return pipe. Sent from my iPhone using Tapatalk __________________ My MGZTT This vehicle was the 2,432nd ZT-T to run off the production line, out of 8,249 This vehicle was the 847th ZT-T 190 + to be made out of 1,756 This vehicle was the 100th ZT-T in Starlight Silver (code: MBB) to be made out of 1,134 Starlight Silver ZT-Ts

9th January 2018, 22:57	#13
Comfortably Numb Posted a thing or two Rover 75 Saloon Join Date: Dec 2017 Location: Penrith Posts: 1,336 Thanks: 165 Thanked 303 Times in 241 Posts	Is there a good diagram of the Mk1 Filter, Pump and tank system, with brief explanation? Is there a simple conversion from 2 pump to one pump system on a Mk1? Does the UBP die quickly if it sucks air?