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Post by eddypeck on Oct 29, 2014 13:42:08 GMT 1
The pump, with relay 18 in the fuel relay slot so on perm power with the ignition in. Dead, wiggle the plug no difference, move the pump and it springs into life.
Faulty fuel pump! was only 5 months old. Got onto the supplier yesterday and they shipped a replacement straight away no questions asked and it's arrived today.
Not helpful that the car is at my work so not sure how easy a roadside fix with limited tools (in the rain) will be.
It could be the black plastic bit on the end that the plug goes into, as it seems to that that makes it work, I'll take off the rubber bungs and nip down the nuts inside. Would be great if it's as easy as that.
But yes, getting it all properly tested would be very sensible. Is the equipment expensive (pressure tester) and would it be worth investing in it and learning what to do as I intend to keep the car. Or is this one area that's best left to the professional?
Oh and new injector lines are on order.
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Post by eddypeck on Oct 29, 2014 13:48:59 GMT 1
How can I test the pump, to see if it's faulty or find out if it's an electrical feed problem? I've now got a flat battery What equipment have you got? Ideally you need; 1 / Glass jar (bottle) to measure fuel volume per unit time, 2 / Fuel pressure gauge to measure pump reserve pressure and line pressure, and 3 / Scope to measure fuel pump voltage + ve and -ve and pump current while pump running continuously but not just to see current flow but also to observe pump behavior. Based on the fuel unions I have seen to date I would find it difficult to believe that there is not a fuel line / filter fault somewhere unless the obvious is OK Glass jar I can manage But seriously any links to recommended equipment and basic how-to's on using it to read the results and understand what I'm looking at would be great.
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Post by Joepublic on Oct 29, 2014 13:52:49 GMT 1
Test for voltage drop at the pump plug, 15+ years ago my mk2 was 2V+ down at the headlamp bulbs with the engine running. Also check the connections at the rear of the fusebox / relay plate for corrosion, a leaky screen past or present causes major corrosion here.
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Post by Joepublic on Oct 29, 2014 13:59:46 GMT 1
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Post by eddypeck on Oct 29, 2014 18:00:49 GMT 1
Test for voltage drop at the pump plug, 15+ years ago my mk2 was 2V+ down at the headlamp bulbs with the engine running. Also check the connections at the rear of the fusebox / relay plate for corrosion, a leaky screen past or present causes major corrosion here. Thanks, back of fuse box is good, I've looked at that in the past. I've also previously had the dash out to check for any leaks in the scuttle/bulkhead.
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Post by valhalla on Oct 30, 2014 0:00:00 GMT 1
The pump, with relay 18 in the fuel relay slot so on perm power with the ignition in. Dead, wiggle the plug no difference, move the pump and it springs into life. Faulty fuel pump! was only 5 months old. Got onto the supplier yesterday and they shipped a replacement straight away no questions asked and it's arrived today. Could just be what you say - faulty fuel pump, with a dead commutator segment causing it to fail to re-start, and maybe also stopping if a few segments are now going around the first failed segment. New pump ought to fix, and probably the last of this problem!!
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Post by eddypeck on Nov 3, 2014 13:50:37 GMT 1
Sorry to keep this running chaps, but....... Fuel pump replaced on Friday, in my lunch break, at work, in the office car park Got me home fine Friday night, used it over the weekend a little and back into work this morning, touch wood - no problems so far. Under the little rubber cover, this terminal on the back of the pump wouldn't tighten, just kept spinning so I gather the pole has broken off inside or something? So presuming I was just unlucky with this pump, and that problem is still now resolved. I still want to give the fuel system a bit of a health check and possibly get a heads up of any further failures. I've got a new set of injector lines on order so that will deal with the rusty unions shown in my previous posts, but as I keep getting advised to pressure test the system I was wondering is this the kind of thing I need or is the equipment more complicated/specialist than this? www.ebay.co.uk/itm/Sealey-VSE952-vacuum-fuel-pump-pressure-test-gauge-set-/181427781355?pt=UK_Hand_Tools_Equipment&hash=item2a3df03eebThanks all for your input, no doubt you'll here plenty more from me - unless of course someone decides to ban me for asking too many questions.
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Post by Rhubarb on Nov 3, 2014 20:33:27 GMT 1
You've broken the pole by overtightening it then? Or someone has...Touch of superglue will sort it..
You can test the output of the fuel easily enough..From memory it's something like a litre or 1/2 a litre a minute.
You've got some data sheets earlier in the thread I think?
Why do you think you'll get banned?!
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Post by Deleted on Nov 4, 2014 0:22:35 GMT 1
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Post by Deleted on Nov 4, 2014 0:40:18 GMT 1
lol , move to Canada or Australia, and it reads in Mpa they are quoting in bars 0.7?
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Post by Rhubarb on Nov 4, 2014 0:47:07 GMT 1
lol , move to Canada or Australia, and it reads in Mpa they are quoting in bars 0.7? He was so busy quoting other peoples posts in an attempt to shit stir he didn't notice that He'll be talking to himself next..
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Post by Deleted on Nov 4, 2014 0:51:57 GMT 1
lol , move to Canada or Australia, and it reads in Mpa they are quoting in bars 0.7? He was so busy quoting other peoples posts in an attempt to shit stir he didn't notice that He'll be talking to himself next.. even the tranny owner doesnt talk to him anymore.
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Post by Rhubarb on Nov 4, 2014 0:53:33 GMT 1
He was so busy quoting other peoples posts in an attempt to shit stir he didn't notice that He'll be talking to himself next.. even the tranny owner doesnt talk to him anymore. Only came in for brakes and he took it to bits, in his dreams
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Post by eddypeck on Nov 4, 2014 13:11:13 GMT 1
You've broken the pole by overtightening it then? Or someone has...Touch of superglue will sort it.. You can test the output of the fuel easily enough..From memory it's something like a litre or 1/2 a litre a minute. You've got some data sheets earlier in the thread I think? Why do you think you'll get banned?! I don't really need to worry about the pole, as the new pump is fitted now, but as the one I took out was only a few months old if it was fixable would be worth a shot. I never touched these nuts until the pump stopped working when it was suggested it could be these connections. The 8mm one was very loose and I was able to lock it down a bit - bit not over tighten. The 6mm one just turned so I guess it was already broke. I didn't even get the chance to over tighten it. I've got new injector seals and fuel lines on the way so when I get to swap them I guess it's ideal time to do some flow rate tests but I'd have thought a pressure gauge would be useful too, but yes the one I linked to is too basic. and no, I don't really think I'll get banned, just as a new comer getting a feel for the forum. Perhaps all my asking questions and not having much to give back will annoy some people?
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Post by Rhubarb on Nov 4, 2014 14:15:41 GMT 1
You've broken the pole by overtightening it then? Or someone has...Touch of superglue will sort it.. You can test the output of the fuel easily enough..From memory it's something like a litre or 1/2 a litre a minute. You've got some data sheets earlier in the thread I think? Why do you think you'll get banned?! I don't really need to worry about the pole, as the new pump is fitted now, but as the one I took out was only a few months old if it was fixable would be worth a shot. I never touched these nuts until the pump stopped working when it was suggested it could be these connections. The 8mm one was very loose and I was able to lock it down a bit - bit not over tighten. The 6mm one just turned so I guess it was already broke. I didn't even get the chance to over tighten it. I've got new injector seals and fuel lines on the way so when I get to swap them I guess it's ideal time to do some flow rate tests but I'd have thought a pressure gauge would be useful too, but yes the one I linked to is too basic. and no, I don't really think I'll get banned, just as a new comer getting a feel for the forum. Perhaps all my asking questions and not having much to give back will annoy some people? The pole was more likely overtightened or a slim chance that vibration has caused it... Pressure gauge would be useful, but I was trying to save you money.. You're not annoying anyone...We're here to help each other out..
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