new fuel injectors

[240DRFT]

i need new fuel injectors, where do you guys recommend i get them from. and how many cc's are stock injectors? thx

[240DRFT]

one more thing. how hard is it to do this? can anyone give me some directions?

[niznos]

Are you going for an upgrade or just stock size? The local auto parts stores should have fair prices if you are going for stock injectors. The replacement is not too hard. First relieve fuel pressure by removing the fuel pump fuse and start the car. It will die after a short while, then crank the engine for like 3 seconds. Now disconnect the 4 injectors' harnesses. Then remove the bolts that hold the fuel rail down (and anything in the way of its removal, there shouldn't be much). and the injectors should come out. Make sure you get the o-rings and seals that should be included with the injectors and then reinstall. Fuel will leak where you are working so careful with the cigarettes.

[MidnightS14]

Are you going for an upgrade or just stock size? The local auto parts stores should have fair prices if you are going for stock injectors. The replacement is not too hard. First relieve fuel pressure by removing the fuel pump fuse and start the car. It will die after a short while, then crank the engine for like 3 seconds. Now disconnect the 4 injectors' harnesses. Then remove the bolts that hold the fuel rail down (and anything in the way of its removal, there should be much). and the injectors should come out. Make sure you get the o-rings and seals that should be included with the injectors and then reinstall. Fuel will leak where you are working so careful with the cigarettes.

All good info except for removing the fuel rail part. You don't have to remove the rail in order to get the old injectors out...would actually make it quite a bit more difficult seeing as how you have no leverage so as to pull out said injectors. Leave the rail in and unscrew the little caps/covers which are held in by two phillips head screws. This is where you might need a little elbow grease to pry the old ones out.....even I had a tough time my first time trying to accomplish this.

Hopefully they'll be relatively easy for ya. And as the above says, be sure and get new o-rings from Nissan (or whereever) and replace all of them them...lube them up with some type of oil (I just pulled the dipstick and used regular motor oil) and they should just pop right in. I would now suggest unbolting the fuel rail, pressurizing the system (by replacing fuel pump fuse and turing the key to the "on" position...WITHOUT starting the car) and seeing if you have any leaks...just to be sure.

If all is good, re-install rail, plug in connectors and fire her up...hope this helps a bit more...

-Bill

[12er]

Bill, I thought 240DRFT got a 90 SE, in which case it'd have a KA24E instead of a KA24DE found in later models (91 and up). If so then injector removal procedure is slightly different between the 2.

[MidnightS14]

Well.....looks like you seem to be right. I did not pay attention to the model.....and damn you 12er ya bastard....lmao.

Well...all that wonderful info can be utilized and cherished by the DOHC guys then....dammit...

-Bill

[niznos]

LOL, proof that DOHC owners would forget that SOHC 240's exist if they weren't reminded all the time.

[12er]

AHAHAHA!! LOL you ppl

[new_to_drift]

thats odd my 89 240 is a KA24DE did some models in 89 come with the DE or did the perosn that owned my car before me do the swap or what.

[niznos]

Well, either you are mistaken and it is infact a plain E; or yes your right, someone has changed it out.