Post #26
Whats the little thing you've got by the drivers foot well? That a fuel isolation valve or something?________________________________________
Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2
Lap of the 'ring
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| Author | Subject: 044 pump killing engine |
 pete_rallye
Seasoned Pro  Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
 Posted 21st Mar 2015 at 21:55
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superchargedblack1997gti6
Seasoned Pro  Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #27
Because the injectors only run at the right flow rate at that pressure ?________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
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Posted 21st Mar 2015 at 21:56
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pugheaven
Seasoned Pro  Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #28
Yup the split second that the connectors touch the engine dies!Its a fuel shut off valve but wire locked fully open due to it closing under excessive vibration! 5 bar because that's what was always fitted and worked fine for 3 or so years before |
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Posted 21st Mar 2015 at 22:01
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pete_rallye
Seasoned Pro Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #29
Injectors will generally run at whatever pressure you subject them too, within reason. They will just flow more at 5 bar than at 3, and some people believe you get better atomisation at higher pressure too.You right turning the engine over will generate suction on the injectors but I can't believe it would be enough to draw enough fuel to actually run the engine. I reckon just the pressure generated in the pot would be pushing the fuel through as the injectors open. ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 21st Mar 2015 at 22:01
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superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #30
You have made a lot of changes to the engine system but I'm sure that the map couldn't be that far out, Faulty fuel pressure regulator I think ,________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
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Posted 21st Mar 2015 at 22:08
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #31
Hopefully that's all it is, the only thing iv changed is opening the restrictor ring up by 1.5mm and that won't effect anything on tick over.Iv wired the pump up like it was before |
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Posted 21st Mar 2015 at 22:11
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superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #32
Bigger air filter too mate?________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
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Posted 21st Mar 2015 at 22:12
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Twangy
Senior User  Location: heswall Registered: 27 Jun 2014 Posts: 623 Status: Offline |
Post #33
what page number is you fuelset up on your project ,usually have just red top lift pump from a tank to feed a swirl pot and from swirl pot to high pressure pump down to fuel rail and return to swirlpot ,not sure how you've done yours ________________________________________ wayne mcardle |
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Posted 21st Mar 2015 at 22:14
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #34
 Top return to tank, next one down return from rail to pot, next one down supply from tank to pot, bottom supply to hp pump then rail |
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Posted 21st Mar 2015 at 22:22
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #35
On the standard fuel rail the one closest to the bulk head is supply and one closest the inlet is return??? |
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Posted 21st Mar 2015 at 22:35
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Twangy
Senior User Location: heswall Registered: 27 Jun 2014 Posts: 623 Status: Offline |
Post #36
fuel line should return to swirl pot and as soon as that's full system is primed ,no reason then to return to main tank ________________________________________ wayne mcardle |
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Posted 21st Mar 2015 at 22:36
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,752 Status: Offline |
Post #37
Hmmmm seems strange that it instantly cuts out ? You would of thought it would run at least badly for a bit if it was over fueling. Sounds electrical to me and the ecu is causing the shut down ? |
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Posted 21st Mar 2015 at 22:37
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #38
No but when the swirl port is full it needs to return to the tank!! God knows Chris, I agree with you that it wouldn't shut down a split second after being powered due to over fueling |
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Posted 21st Mar 2015 at 22:40
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superchargedblack1997gti6
Seasoned Pro Location: guildford Registered: 15 Aug 2009 Posts: 2,376 Status: Offline |
Post #39
So is it the pump cutting out or the whole ecu as well, check the wiring to you're ecu?________________________________________ Super high boost Completed, destroyer of gearboxes and 160mph club |
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Posted 21st Mar 2015 at 22:50
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Twangy
Senior User Location: heswall Registered: 27 Jun 2014 Posts: 623 Status: Offline |
Post #40
pugheaven wrote: No but when the swirl port is full it needs to return to the tank!! God knows Chris, I agree with you that it wouldn't shut down a split second after being powered due to over fueling no when swirlpot is full pumps wont run as if you've primed like when you turn key ,pump runs for so many seconds and stops ________________________________________ wayne mcardle |
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Posted 21st Mar 2015 at 22:51
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bigbadbowen
Seasoned Pro Location: Winchester Registered: 21 Nov 2003 Posts: 13,752 Status: Offline |
Post #41
I think something is giving the ecu a reading or signal it doesn't like or out side a saftey parameter and is shutting down ? Could be wrong though |
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Posted 21st Mar 2015 at 22:52
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #42
Swirl pot is fine.... Think every one with one fitted on here has the return to tank |
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Posted 21st Mar 2015 at 23:01
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Niall
Seasoned Pro  Location: Epsom Registered: 06 Jun 2012 Posts: 1,941 Status: Offline |
Post #43
So with the car off but 12v manually supplied to the pump, will the pump run? |
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Posted 21st Mar 2015 at 23:01
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RallyeP6
Regular  Location: West Byfleet Registered: 11 Jul 2013 Posts: 451 Status: Offline |
Post #44
bigbadbowen wrote: Hmmmm seems strange that it instantly cuts out ? You would of thought it would run at least badly for a bit if it was over fueling. Sounds electrical to me and the ecu is causing the shut down ? But even connecting the pump independently (out of circuit) causes the engine to shut off. How easy is it to lift the fuel rail up with the injectors attached and put containers under each injector. Unplug the coil pack and on DTA you should be able to run the diagnostic test for injectors. On mine, they cycle through low speed to high speed. At 5 bar i would guess you'd get a fine conical spray depending on what type of injectors you have. To be honest it was easier on mine as i could just open up the butterflies on throttle bodies and see what was spraying out of the injectors. Otherwise wait until you can plumb in a fuel pressure gauge. |
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Posted 21st Mar 2015 at 23:01
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #45
To the hp pump? I would assume so if taking it straight off the battery! Both pumps prime off the ecu but won't start! I then disconnected the power for the hp pump and it started, with it running I then connected power to the hp pump and the engine cuts out straight away |
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Posted 21st Mar 2015 at 23:05
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bigbadbowen
Seasoned Pro Location: Winchester Registered: 21 Nov 2003 Posts: 13,752 Status: Offline |
Post #46
I think you have supply from main tank and return from rail round the wrong way ollie ? |
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Posted 21st Mar 2015 at 23:08
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #47
No I don't the pump fills up from the bottom to top so bottom is supply to hp pump, next one up is supply from tank (fluid drops to the bottom supplying the hp pump) the next one up is return from rail (also dropping to the bottom to supply the hp pump and assisting the supply from the tank) top one is return to tank |
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Posted 21st Mar 2015 at 23:12
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #48
You could probably have them the other way around but it certainly wouldn't cause any problems |
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Posted 21st Mar 2015 at 23:14
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pugheaven
Seasoned Pro Location: Fareham Registered: 17 Dec 2006 Posts: 4,602 Status: Offline |
Post #49
click to watch video |
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Posted 21st Mar 2015 at 23:29
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #50
it would if the HP pump was in the return line... (regardless of how its plumbed into the swirl pot, I mean how its hooked up to the fuel rail)________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 21st Mar 2015 at 23:18
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