Engine/Transmission (1998.5 - 2002) Anyone install nozzels on injectors?

[DirtyDodge]

Hi,



Anyone have any advice to offer for installing aftermarket nozzels onto stock injectors? I am debating if I want to attempt this or send the things back. I think it would be easier to just buy new injectors.



Any help here is greatly appreciated.



DirtyDodge

 

[jwilliams3]

If you have a vice in the garage, you will need it.



I use 2 block of wood with about a 1" hole drilled between the two.

I set the injector between the blocks and clamp onto it and then untorque the injector retainer nut with a 15mm socket.



Torque on the nut is about 35lbs.

Re-install all parts in the order they were taken apart in.

It is a fairly simple process.

 

[LOtero]

what were the results? no problems? i have been kicking around the idea for a while now. what are the pros and cons on going with brand new injectors as opposed to replacing the nozzles with bigger better ones? (131000 miles by the way)

 

[jwilliams3]

I have done about 10 sets with no problems.

 

[nps]

The procedure for change of nozzles calls for testing the pop-off pressure after the nozzle has been replaced. The pressure can be adjusted with shims. Also, a set of injectors should be balanced to ensure that all the injectors are flowing at the same rate.



Some shops will do this for you after you change the nozzles. Do you absolutely have to have them tested? No, but if you have problems you will never know if one of the injectors is bad or not. And if one of them is off, you will be sacrificing power and economy even though you may have more power than before you changed them out.



So the price difference between buying injectors and nozzles is the labor to change out the nozzles, and the testing of the new set. Most vendors that offer both nozzles and injectors have about a $100 difference between a nozzle set and the same nozzles already installed and tested in the holders(plus a core charge on your old injectors if you are buying an injector set).



Typically all nozzles are new. Unless you are getting Bosch factory injectors, most of what you buy as aftermarket injectors are new nozzles put into old holders. That's why the vendors have core charges on your old injectors - so they can reuse the holders that have no moving or active parts to wear out.



jwilliams3 - are you having yours tested or are you just putting them back in?

 

[jwilliams3]

All the ones I have done were never pop tested. All have worked fine.

 

[Island Dodge]

I would think this would apply to Cummins . On the Bosch (MB) injectors, replacement of nozzles are the cheapest way to go and an easy job. Last ones I bought were under $30. 00 ea. I 've also had good luck soaking the parts overnight in liqueur thinner, although I've heard Hoppes #9 gun cleaning solvent is better. I hate to bring up another brand of diesel but I'm trying to figure out what things I've learned can be applied to Cummins

 

[DirtyDodge]

Okay, here is some more questions.



For removing and re-installing injectors.



Will I need a new valve cover gasket or is old one re usable?



Will I need new fuel injector sealing washers (shims) or can the old ones be re used?



Can you think of anything else that I will need?



Thanks.

 

[nps]

You can use the old gaskets and washers.



19mm crows foot socket helps on the #6 injector (its under the cowl).