Engine/Transmission (1998.5 - 2002) Removing injectors?

[RobG]

I'm trying to remove the injectors from my '01 ETH (replacing the DD3's with DD1's) and the valvecover is off, the cap over the top of the injector is off, and the fuel line is pulled back out of the way.



How, then, do you pry the injectors out? I helped install these way back when, and I remember a neat trick where they just pop out, but I can't get it out. The injector moves a little, but I don't think I'm prying it just right, or using the right tool.



How do you do this?



Rob



(the DD3's are already sold, btw)

 

[willyslover]

pull the tubes first !!!

then use a bolt to screw into the top of the injector and a pair of pliers to grab the bolt and up ya go. .

 

[RobG]

The tubes are out (I think -- I unscrewed the 19mm bolt holding the fuel lines in and pulled the line out), and the bolt is screwed into the top (forgot to mention the bolt part).



Isn't there a way to lever them out? That's how we did it when we removed the originals... seems easier then pliers.



Thanks!



Rob

 

[Steve St.Laurent]

I've always used a screwdriver and pryed under the bolt head (use one of the shorter intake horn bolts) and pryed against the rocker arms, pops right out. Make sure you are holding that fuel line back and have pulled the connector tube back (use a small screwdriver) - you can't let go of the fuel line or the connector will seat back against the injector. You don't want to knick those.

 

[mlockner]

Hey Rob,



After you remove the fuel line there is a tube behind it that you have to move back the direction you removed the fuel line from that seats into the side of the injecter that you have to pull back out of the way in order to remove the injector. If you do not do this I do not think you could get the injector out and you may possibly damage that tube if it is not pulled back. It actually seats into the side of the injector and the fuel passes through the line into the tube and then into the injector. Hope you can understand wht I am talking about. I believe that Diesel Dynamics has a write up on their web site on how to remove and replace the injectors. Hope this helps.

Mike Lockner

 

[willyslover]

guess I should have 'splaned it better. . but I figured just a little memory jog would do the trick... Steves and ML advise is spot on !

the air horne bolt is long and has a lot of "grip" room . . some will come out with just your finger pull... don't forget the copper washers on the bottom on removal and reinstall

 

[DEZLPWR]

Why are you downgrading????

Most people would go from the I's to the III's... . Did the III's smoke too much for your liking? I bet you had no trouble finding the I's!

 

[RobG]

Thanks to everybody for the tips! I got 'em all out and packaged up to send to their new owner.



The reason I'm downgrading is to try to improve the drivability of this POS before I de-mod it completely and trade it.



The III's require an HX-40 for heavy towing, and my HX-40 doesn't spool up until 2000 RPM, so it has no low end. I'm going down to I's so I can put the HX-35 back on and try to improve the overall way the truck drives.



If that fails, I will de-mod it and trade it on an F450, or if I get really lucky and can afford it, an FL70.



Rob

 

[PRout]

Not trying to be a smart-a w/ this question, but this is something that I STILL am not clear on.



Cant you just back out of the throttle, to lower the EGT's while towing a grade, or not roll it on as much to reduce smoke before the turbo spools?



Or, do the DD3's make more EGT's & smoke for the same power??



Seems like 1's give less of an option. Or are they more efficient for the lower power levels...



Have been holding off from upgrading the 1's to 3's just for this reason. Would not want to get higher EGT's for the same power output while towing.



Too bad we couldnt have worked out a trade. :{

 

[RobG]

Sure you can back off... and ultimately end up going a lot slower. The problem isn't really the DD3's as it is the damn turbo. The HX-40 has been a problem for me since the day I got it. It flat out doesn't work well for me, and nothing short of fabbing a twin system will help.



The only thing I can figure is that the HX-40 probably works better on automatic-equipped trucks, where you don't lose boost during shifts, and the torque multiplication of the converter helps with power too.



That's why I'm choosing to de-mod and drop back to the HX-35. I already have way more power than I need, so going from 3's to 1's really isn't that big of a deal. Heck, the DD UPM box alone is plenty of power.



Rob

 

[RobG]

Dunno yet; the 1's aren't here yet. The guy I'm trading with can't have his truck down because it's his daily driver, so I've sent mine to him. He'll put 'em in this weekend and send his back, and I'll pop 'em in next week.



Sometime this week I need to pull off the HX-40 and put the HX-35 back on. That wouldn't be so bad except I also have to get the ATP exhaust manifold and downpipe blankets off (and subsequently back on) along the way.



Then once the HX-40 is off, it goes up on eBay, along with a red Cummins valvecover. No point in having it when it's covered up with the ATP blankets.



Rob

 

[PRout]

Ahh. . ha. .

Youre going back to conservative.

I have to say that I really like the 1's as far as smooth throttle response is concerned, and no smoke or egt problem. Runs good, just sometimes want more.



Some people have said that 3's suck for towing because they give higher egt's than 2's for the same power output. That doesnt make sense, without some kind of explanation, but maybe.



Glad to hear you got that part of the job done.



What do you think of the 1's so far? Was it worth the change?



Edited: re-posted - was originally posted prior to Robs reply.

 

[Snow man]

Shortshift,i know it doesnt make sense,but the 3's do make more heat at the same power level than the 2's. The 3's also make a lot more power than the 2's. IMO,more than the 20hp dyno difference by the seat of pants. We went form dd3's to dd2's ,and the power went from awesome to ok at best.

 

[PRout]

Originally posted by Snow man

Shortshift,i know it doesnt make sense,but the 3's do make more heat at the same power level than the 2's.

Yea, thats really interesting.



Have seen a few posts describing the same result while towing heavy.



Just trying to figure out why that is?

 

[fj40charles]

I believe DD2's are supposed to have a better spray pattern which results in lower EGT. I don't know what make a spray pattern "better. "