2LTE Injector line query

[MojoMuffy]

I’m new and I have a 91 LJ78 RHD 2LTE Auto imported from Dubai. I’m having a question about the fuel rail configuration. When I tighten the compression nut of the fuel line to the injectors the nut bottoms out on the return rail nut and the line doesn’t tighten on the injector.

 

[nomadtribe]

I’m new and I have a 91 LJ78 RHD 2LTE Auto imported from Dubai. I’m having a question about the fuel rail configuration. When I tighten the compression nut of the fuel line to the injectors the nut bottoms out on the return rail nut and the line doesn’t tighten on the injector.

View attachment 3089667

Be careful when loosening and tightening. I broke my injector rail piping and had to buy a new one.

Place a screwdriver to lock the bottom nut. If it is too loose, then remove the rail and tighten the bottom nut first.

Make sure to add new copper gaskets at the top and bottom of the rail.

Make sure you have a good inner thread and that the banjo bolt is okay.

 

[MojoMuffy]

Yeah so I got all that but my problem is my compression nut for the line bottoms out on the nut and doesn’t seat on the injectors. My washers are all new but I’m missing something the washers are too thick or the nut is too tall but they’re all original parts.

 

[nomadtribe]

Have a read through section FU-7 and FU-12 in the attached PDF. The gaskets are very thin. Below is a picture for reference. Hope this helps.

 

[GTSSportCoupe]

@MojoMuffy The washer at the fuel return rail is not supposed to be there. That washer is supposed to go down inside the injector hole. There are only supposed to be little copper/aluminum washers up by the fuel rail. There could be more bad stuff going on then that. Someone has done some poor work there. I recommend buying all new washers for all injectors and re-doing everything yourself. Use megazip to find the part numbers, order the parts from partsouq. Generally if you had the right washers, they can all be reused except the smallest one that seals the injector nozzle to the cylinder head/ upper precombustion chamber. If that washer is not replaced everytime injetors removed, then they will get fouled with combustion carbon and not work right.

Also guys, the manual @nomadtribe posted is for the first generation 2LT (pre 1989). The 2LTE and 2LT-II have a lot of differences, and you need to use that manual.

Here are the right manuals for these engines:

RM520E (Main for 2L, 3L & 5L engines)

Dropbox - 2L 3L 5L ENGINE RM520E.pdf

RM582E (Supplement for 2L, 2L-T, 3L and 5L engines)

https://www.dropbox.com/s/1joci2o0xtg6ujv/2L%2C2L-T%2C3L%2C5L ENGINE SUP. RM582E.pdf?dl=0

 

[nomadtribe]

Thank you @GTSSportCoupe. More manuals for the library

 

[nomadtribe]

@MojoMuffy The washer at the fuel return rail is not supposed to be there. That washer is supposed to go down inside the injector hole. There are only supposed to be little copper/aluminum washers up by the fuel rail. There could be more bad stuff going on then that. Someone has done some poor work there. I recommend buying all new washers for all injectors and re-doing everything yourself. Use megazip to find the part numbers, order the parts from partsouq. Generally if you had the right washers, they can all be reused except the smallest one that seals the injector nozzle to the cylinder head/ upper precombustion chamber. If that washer is not replaced everytime injetors removed, then they will get fouled with combustion carbon and not work right.

Also guys, the manual @nomadtribe posted is for the first generation 2LT (pre 1989). The 2LTE and 2LT-II have a lot of differences, and you need to use that manual.

Here are the right manuals for these engines:

Here is a manual that explains how the 2LTE injection system works:

V 3 P5ZGR01.pdf

RM520E (Main for 2L, 3L & 5L engines)

Dropbox - 2L 3L 5L ENGINE RM520E.pdf

RM582E (Supplement for 2L, 2L-T, 3L and 5L engines)

https://www.dropbox.com/s/1joci2o0xtg6ujv/2L%2C2L-T%2C3L%2C5L ENGINE SUP. RM582E.pdf?dl=0

Hi @GTSSportCoupe

Are you able to attached the 2LTE Injection System manual? Tried to download but access is required.

Thank you.

 

[GTSSportCoupe]

Hi @GTSSportCoupe

Are you able to attached the 2LTE Injection System manual? Tried to download but access is required.

Thank you.

Try this one.

Here is a manual that explains how the 2LTE injection system works:

 

[GTSSportCoupe]

And here is wiring manual while we're at it....

 

[GTSSportCoupe]

And chassis manual if you don't have