a0j0ia

I did a 4 hole injector swap on my 1995 cherokee xj
with this part # 0280155857 it wasnt a direct fit i did a little modification to fit it in , but i dont know if this was a correct swap or i should look for something else ..
any suggestions ??

a0j0ia

Anyone have an idea ??
please help ?

Cummins93

What did you modify? Are you experiencing problems?

a0j0ia

Im not facing any problems , i did little wiring to make the injectors fit , i did a fuel pressure test earlier and it was 46 psi at idle , i dont have a vacuum hose going to the pressure regulator since i bought the car , i dont know if it was a good read or i do have a weak fuel pump since car dont start right away

Cummins93

Put the manifold reference line back on. "A little wiring" could mean anything. I'll tell you what the part number on my 4holes when I get back to CT. I think that is what you are asking?

a0j0ia

Im asking if anyone knows these injectors make a good swap or do i need to put the one hole injectors back

country2

I looked at the specs and I see no reason why they would not work... Also the wiring he did was just the EV1 to EV6...I hope. Now these are longer than the OEM is since they are EV6CL I don't know how much longer they are or if they would allow the fuel rail to bolt all the way down. Now I went with Bosch 0280156161on my 2000 which were longer than OEM since they are EV6EL and have no issue. So my gut feeling is saying no issue with fit or pressure...

a0j0ia

Yeah the wiring i did is ev1 to ev6 adapters but i noticed no improvement on performance i got a read on fuel pressure 46 psi w/o the reference vacuum line on the pressure regulator , does that mean i have a good fuel pump or it need to be replaced since the car doesnt start right away ?

PatHenry

46psi is really high for a 95, Stock pressure is something like 31 and then it can go up a little with the vacuum line off.

Download a copy of the factory service manual from Cruiser54.com -> Technical Manuals and it will have the full steps for the fuel pressure test and the values to check against.

a0j0ia

I think i have a bad pressure regulator , since the gauge needle drops pretty quick when i shut off the car and have high emissions , im confused pressure stay at 46psi at idle but drops very fast when shut off , is it a regulator or fuel pump ??

country2

oops I was looking at 0280155703 thinking those were stock ones for 1995 and using that to compare too..sorry.

a0j0ia

I connected the vacuum line to the pressure regulator and had a 36 psi read then but have the needle shaking and when i give it throttle it drops to 34 psi then back to 36 psi and as soon i shut it off it drops to 0 in seconds do i need to replace my fuel pump ??