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30th January 2014, 21:52 | #1 |
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CDT LP Fuel Supply Flow
Dropped the fuel tank on my scrapper today and had a look at the way the fuel pipework runs.
This is a sketch of how it is all plumbed in: Looking at the way it is piped, when the fuel is cold and the thermostat is shut this is the flow path of the fuel: So the fuel recirculates in the LP circuit until it has warmed up with the losses to the engine being topped up by the ITP. When the fuel returning down the spill line is hot the flow path changes: In practice, once the car has warmed up, it's likely that varying amounts of fuel will pass down both paths depending on the conditions to regulate the fuel temperature in the circuit to 76C, and a small amount of fuel may go through the restrictor valve to ensure that the return lines don't over pressurise. . Last edited by Mike Noc; 11th May 2018 at 19:52.. |
12th January 2015, 06:03 | #2 |
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Nearly 12 months on and i have only just read this, excellent post thank you for taking the time to do this Mike Arctic
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Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 12th January 2015 at 13:55.. |
12th January 2015, 11:59 | #3 |
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This is a brilliant diagram. One question, if you have the single in tank pump (As I do) where it says "to UBP" would the line just go straight to the fuel filter or is it a completely different system?
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12th January 2015, 12:33 | #4 |
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From a Rover technical sheet :
Last edited by brgcdti; 12th January 2015 at 12:41.. |
12th January 2015, 13:10 | #5 | ||
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Quote:
Quote:
I'm sure Marinabrian could shed some light on it though because he has had some issues with his. |
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12th January 2015, 13:34 | #6 | |
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Quote:
It's not unknown for Rave to be incorrect of course. But there is clearly a discrepancy here that only a physical examination of the tank will resolve. I note there's no pressure regulator in the tank on the later drawing. TC EDIT: Brgcdti, please could you post the link to the document cited? Last edited by T-Cut; 12th January 2015 at 13:48.. |
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12th January 2015, 14:40 | #7 |
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T-Cut, I read your link, http://www.the75andztclub.co.uk/foru...d.php?t=108535 also very interesting but it still doesn't clarify if the fuel line system on the single pump is different from the duel pump. You do mention they can't be changed to a single pump set up (which is a shame for those who wish to) but still no diagram of the single pump fuel plumbing set up. It's only for my own edification you understand, I don't have any problems (touch wood!!) it's just interesting reading!!
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9th November 2016, 11:54 | #8 |
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I am bumping up this excellent thread, as I am sure it will help quite a few members
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Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " |
11th May 2018, 13:27 | #9 |
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Any chance these pictures could be rehosted please?
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11th May 2018, 14:17 | #10 |
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Mike reposted all three of them in a new thread, here -
https://the75andztclub.co.uk/forum/s...61#post2525361 It would have been better had Mike simply deleted the photobucket links and pasted his pictures in the existing post - Mike?
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Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money. Last edited by HarryM1BYT; 11th May 2018 at 14:53.. |
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