Hi there done a compression check results below are these okay?

 

Cylinder 1 = 145 PSI

Cylinder 2 = 145 PSI

Cylinder 3 = 145 PSI

Cylinder 4 = 155 PSI

Cylinder 5 = 140 PSI

Cylinder 6 = 145 PSI

 

On releasing pressure from the gauge on cylinder 4 fuel sprayed all over my window screen then when i took the gauge out complete fuel dripping off the bottom of the gauge when pressure released again fuel sprayed all over the garage floor! So wiring loom all checked 0.02 ohms to all connections.

Measured on each side of the PTU results show:-

 

585 ohms cylinder 1

585 ohms cylinder 2

585 ohms cylinder 3

565 ohms cylinder 4

575 ohms cylinder 5

585 ohms cylinder 6

 

So i have phoned Nissan for a new injector £187 inc VAT!!

EVEN IF THE RESISTANCE OF THE COIL IS 12 ohms LIKE THIS ONE WAS, THE INJECTOR WAS STUCK FULLY OPEN CAUSING THE CYLINDER TO FLOOD!

 

TO BE CONTINUED...............

Did you not pull the fuel relay before cranking it ?

No i pulled all injector plugs off and the crank angle sensor plug off when i was measuring the loom, that was the only cylinder i got lots of fuel out of, i think that the injector is pressured all the time but needs an earth from the ECU to give a pulse to spray i think?

Please tell me if I'm wrong i am learning.

you could just pull the fuel pump fuse as that's in the drivers side fusebox in the engine bay, no need to mess with cas

Thanks for that mate, i will remember that but ive been measuring all of the loom for faults thats why i had that plug out. but now i know the loom is okay, i will do that if need to do a compesson test again. cheers its the first time ive done this....

Just removed injector no4. its U/S, now waiting for new one from Nissan.

you got a new one from nissan ? ... i could of sent u one FOC m8 ... i got quit a few here doing nothing

Yes i bought this replacment for £45 becouse my original injector went open circuit, so not trusting second hand ones anymore....

where did u get one at that price .. as thought u said nissan wanted 180 quid ?

Yes ive paid that £180 today. Why how much do u do them for Mark mate?

You paid £45 for a single used 370cc injector? :blink:

£45+vat with delivery £60

£45+vat with delivery £60

 

Where from?

Yes ive paid that £180 today. Why how much do u do them for Mark mate?

 

i dont sell them new m8 .. lol like i said in post up there ^^^^ you could of had a used one for Free :)

 

- - - Updated - - -

 

£45+vat with delivery £60

 

i'm confused now ... u paid 60 or 180 ?

He bought a used one for £45+VAT with delivery (£60) and just now a new one for £180 from Nissan.

The first thing I said was the replacement injector could be faulty... Do I get a prize :tt2:

Yes baz ill get u a beer when i see u mate!

You paid £45 for a single used 370cc injector? :blink:

 

Yes from Zedworld and YOUR POINT BEEN?

 

Jeff TT

Edited March 31, 201312 yr by JeffTT

No i pulled all injector plugs off and the crank angle sensor plug off when i was measuring the loom, that was the only cylinder i got lots of fuel out of, i think that the injector is pressured all the time but needs an earth from the ECU to give a pulse to spray i think?

Please tell me if I'm wrong i am learning.

 

 

Non of this makes sense, with the cas unit plug undone, the fuel pump will not run as there is no engine start signal, with no pump there is no additional pressure, if the injector was stuck open the fuel pressure would have been leaking fuel all of the time even as you were removing the spark plug and inserting the compression tester which would of been obvious...sounds a bit mixed up.

 

 

Jeff TT

Yes from Zedworld and YOUR POINT BEEN?

 

Jeff TT

 

MY POINT BEING that I was going to suggest he send it back to WHEREVER he got it from if possible as you can pick up an entire set of working injectors for £60. Or as Mark had kindly offered he could have had one for free. Didn't know (or care) that he bought it from you.

 

All inconsequential seeing as he's bought a brand new one from Nissan.

 

Regards.

Thanks for the offer Mark mate, i find out on Tuesday how long its going to be, if its 3 weeks delivery, then can i take u up on your offer? In excitement of finding the fault i have lost the little metal half moon thing from the injector lid! Do you have any please Mark?:biggrin:

 

Thanks mate all the best

 

Paul

im sure i have some of those some place

 

Send me your address to this email ( mark@drcorc.co.uk )

E-Mail sent Mark.

Cheers mate