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jamesy1990
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Registered: 15th Dec 08
Location: fife
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   24th May 10 at 09:56   View User's Profile U2U Member Reply With Quote

my injectors are not spraying fuel i presume its just presureising in the rail and going back to the tank ? anyone got any ideas as to what causes this?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 10:17   View User's Profile U2U Member Reply With Quote

anyone?
leon.
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Registered: 24th Jun 08
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24th May 10 at 10:19   View User's Profile U2U Member Reply With Quote

injectors blocked would be my first port of call
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 10:21   View User's Profile U2U Member Reply With Quote

they were fine when removed and iv been careful with them so i doubt all 4 got blocked during rebuild i could be wrong though
Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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24th May 10 at 10:31   View User's Profile U2U Member Reply With Quote

checked they are actually pulsing?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 10:39   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Nic Barnes
checked they are actually pulsing?


what i done was i unbolted the fuel rail and removed rail with injectors attached , turned engine over and there was no spray , so i pored a little petrol into each bore cranked it and it fired , so im presuming its because the injectors are not spraying fuel into the head
Ian W
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Registered: 8th Nov 03
Location: Wirral, Merseyside
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24th May 10 at 11:31   View User's Profile U2U Member Reply With Quote

Injector loom ok?

Seen strange that all four would go at once.
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 11:54   View User's Profile U2U Member Reply With Quote

yeah stripped loom back and no broken wires ect.... realy puzzled :S
flybikeslee
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Registered: 2nd Jan 07
Location: Liverpool
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24th May 10 at 12:32   View User's Profile U2U Member Reply With Quote

fuel pressure reg?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 12:41   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by flybikeslee
fuel pressure reg?


i have been told about this if its not presurised enough the ecu wont bother spraying it into the head?

but like i said everything worked fine prior to rebuild

just looking for advice on things i can check on my own


when i crank it over a couple of times them go and diconect the (feed) fuel line it is certinly presurised as it sprays back at me , in my opinion its a electrical fault somewhere . so if anyone has any ideas they wll be greatly appreciated!
Shrek
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Registered: 2nd Nov 06
Location: Berkshire
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24th May 10 at 12:42   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Nic Barnes
checked they are actually pulsing?


What Nic said, put a noid light on them and crank it over, bet they are not pulsing. The ECU receives a sig from crank sensor and switches them. Its not hard, fault find it.

Dont waste your time doing anything else til you find out if they are pulsing.
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 12:44   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Shrek
quote:
Originally posted by Nic Barnes
checked they are actually pulsing?


What Nic said, put a noid light on them and crank it over, bet they are not pulsing. The ECU receives a sig from crank sensor and switches them. Its not hard, fault find it.

Dont waste your time doing anything else til you find out if they are pulsing.


a noid light???
so if they aint pulsing its either my crank sensor or my ecu at fault?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 12:49   View User's Profile U2U Member Reply With Quote

and also would i be able to feel the injectors pulsing through my fingers?
Shrek
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Registered: 2nd Nov 06
Location: Berkshire
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24th May 10 at 12:54   View User's Profile U2U Member Reply With Quote

Not necessarily, a noid light is a small light bulb you plug into the injector loom and as the inject it flickers. Dont place the blame on components without first checking them!! Check the injector pulse, if they aren't pulsing then check the crank sensor output, etc etc. You WILL find the problem, just apply some logical thinking, or pay a competent auto sparky to do the job. What engine etc is it?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 13:03   View User's Profile U2U Member Reply With Quote

its a x16xe that i have just rebuild , eveything worked fine on removal except the 8 bent valves , thats why i cant see anything being broken as all my sensors and ecu worked fine ti begin with , any other way of checking injector pulse?
jamesy1990
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Registered: 15th Dec 08
Location: fife
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24th May 10 at 13:09   View User's Profile U2U Member Reply With Quote

wel saying that i removed the injectors and cranked it over and they were not spraying fuel so there cant be a pulse , so confused lol
Shrek
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Registered: 2nd Nov 06
Location: Berkshire
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24th May 10 at 14:32   View User's Profile U2U Member Reply With Quote

Have you plugged everything back in? Have you reconnected all the earths? Including the ones on the inlet manifold?
jamesy1990
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Registered: 15th Dec 08
Location: fife
User status: Offline
24th May 10 at 16:57   View User's Profile U2U Member Reply With Quote

im left with one multi plug that comes from the starting and charging loom its located behind the inlet manifold its got a oranage rubber caseing on it unsure what its for cant find anywhere to plug it in .... as for earths yes there all conected two on altenator and the two on the inlet and theres another one i bolted to the head , also theres the main earth from the negative that earths to the bulk head
jamesy1990
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Registered: 15th Dec 08
Location: fife
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25th May 10 at 12:09   View User's Profile U2U Member Reply With Quote

anyone got any input?
dean101287
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Registered: 22nd Jul 07
Location: Cardiff
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25th May 10 at 12:46   View User's Profile U2U Member Reply With Quote

Find out where the multi plug that isnt going to anything was before the rebuild. It must go somewhere and chances are it is your problem.
jamesy1990
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Registered: 15th Dec 08
Location: fife
User status: Offline
25th May 10 at 13:56   View User's Profile U2U Member Reply With Quote

will take a pic of it and see if anyone knows what it is

 
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