madteg
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| posted on 8/11/11 at 10:28 PM |
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(help) Low pressure fuel pump (help)
Got a problem with my low pressure fuel pump not supplying enough fuel to swirl pot as its running out of fuel at full chat. Not shaw what to do,
1, Fit a larger fuel pump such as a redtop
2, Fit another fuel pump along side of original
3, Fit fuel bowl to tank and remove swirl pot.
Any ideas as i am undecided.
[Edited on 8/11/11 by madteg]
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phoenix70
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| posted on 8/11/11 at 11:22 PM |
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Where does the return feed from the fuel rail go? does it go back to the tank, or to the swirl pot. if it's the tank you could improve things
by returning it to the swirl pot instead (Although there will be someone along to tell you thats not a good idea)
Cheers
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snapper
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| posted on 9/11/11 at 06:12 AM |
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How high (or low) is the pump fitted?
The height above the lowest point of the tank is important as facet type solid state pumps don't like to lift to high.
They push better than they pull.
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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madteg
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| posted on 9/11/11 at 06:27 AM |
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Pump is lower than the tank and return goes to swirl pot.
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Nickp
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| posted on 9/11/11 at 06:48 AM |
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So, do you have a LP pump feeding the swirl pot and a HP pump feeding fom there to the engine?
If so it sounds like you just need a better flowing LP pump to keep up with the demand of the HP pump. That'd be the easiest way around it I
reckon.
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v8kid
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| posted on 9/11/11 at 07:42 AM |
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If you are stuck I have a hardly used red top pump complete with unions available at half price I can post to you.
Cheers!
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
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sickbag
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| posted on 9/11/11 at 09:10 AM |
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quote:
Originally posted by v8kid
If you are stuck I have a hardly used red top pump complete with unions available at half price I can post to you.
Cheers!
If the original poster doesn't take you up on your offer for the pump then I will.
Finally back on the job!
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paulf
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| posted on 9/11/11 at 09:39 AM |
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Kev
Just put a red top pump on it, you will then have that annoying ticking noise that mine makes all the time, but at least you will have enough
fuel.
Paul
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adithorp
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| posted on 9/11/11 at 10:37 AM |
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Option one is probably the easiest to achieve. Op2 is probably a none starter as although it should work why add complexity when there are easier
alternatives.
I'd go with option three. Done right, it works and is a lot simpler sytem, thus eliminating a lot of possible faults.
My previous tank only had a well on the bottom (about 80mm cube) with no form of baffleand the return into the main part of the tank. I only had any
problem on track days when the tank was almost empty.
The current tank has a 155mm diameter by 100mm deep well. The hole from the main section is only 50mm so the lip forms a baffle and the return goes
back into it. I don't get any sign of problems now and I've run it very low both on trackdays and in the alps with hairpn bends. The
biggest worry is having no warning of running out.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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rusty nuts
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| posted on 9/11/11 at 08:12 PM |
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Option 3 would do away with the low pressure pump which potentially would be more reliable as there's one less thing to go wrong. I know a man
thats a good welder if you need any help.
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