Engine/Transmission (1994 - 1998) Got the 215's installed

[KMott]

After getting the set of 215's installed that i got from Piers, i cant really notice any difference in performance. I installed a #10 plate a couple weeks ago, and the truck opened up a lot better. I was getting around 22psi boost, and 950 degrees EGT max. (instead of 14 and 900) There was no difference in the #'s after the injectors. The only other things the truck has is a boost elbow, exhaust ripped off right behind cab and a k+n air filter. Shouldnt the EGT and boost #'s be higher with a higher flow injector?



I just wanted to confirm that they are in fact 215 injectors. Here are the numers off the old and new injectors:

OLD: BOSCH GERMANY 367 (060) KDAL59P 12 260 bar

NEW: BRASIL KDAL59P6 590 07 260 bar (908) The tips say 6816, and the top says 6820



Thanks, kevin

 

[Cooker]

I don't know if those are in fact 215's but if you got them from PDR I would say that that it is a pretty good chance that they are.



They are not a hugh HP gain over your stock 160 injectors, and probably not be as noticable as putting in your #10 plate.



If setup properly I think you should have picked up a couple PSI of boost. Maybe you have a boost leak somewhere?

 

[CarlJensen]

You also must remember that old injectors have gone through what is called "horsepower creep". As an injector ages it gets worn and the 160hp units slowly become 180hp units or more. The new injectors are 215 so not a great deal of gain.

 

[KMott]

I just thought it seemed that EGT's should be higher with all that extra fuel? I have read about guys pushing 1250 with just a 10 plate. Seems kind of wierd that i cant even hit 950. I suspected the injection pump had problems before doing these mods. I just did the mods to see if they would cure the problem, instead of ripping the pump off first. but it still doesnt seem right.



If it had a boost leak, wouldnt i be seeing higher egt's? Since both boost and egt's are low, i have to assume its a fuel problem.

 

[Cooker]

Where is your EGT probe?



What made you suspect an injection pump problem?



Low fuel pressure and a partially open fuel shutdown solenoid could also add to this problem.

 

[CSchafer]

I don't know if this will help any but my dads truck (94 4x4 AT)had some serious power issues from the day it was brand new. At 180,000 miles he put in a TST #5 or 6 dont remember and it did barely anything for it. After a trip to TST the guys worked on it for a long time and unenounced to my dad the truck should rev over 2400 rpms in neutral on the floor (started notecibily defueling at about 1900rpm) . They got it to come up to about 2700 and it helped alot. Then after 300,000 miles he had the timing done to get some better milage was about 17 on well rounded trip. Doing the timing found it at 9. 5 degrees from the factory . After the timing and a set of 3kgs the truck runs great, gets 19. 5 on same trip and put down 240 HP on the dyno. Hope this helps.

Cade Schafer

 

[K5IP]

KMott,

With a boost leak you will see higher ets along with lower boost pressures.

Rog

 

[Matthug]

This seems like an issue of fuel delivery. KMOTT, where did you install the 10 plate? In the stock position or full forward? Also, did you put your AFC housing full foward? I have an idea, I'm thinking your AFC arm isn't moving. You still got more boost and slightly more EGT because perhaps you moved your AFC housing further forward than it was before when you did your plate. Check for a leak in the line that goes to the AFC housing. If no leak, take the AFC housing off and put some shop air to it about 20-30 PSI and see if the arm moves. If no movement you could have a ruptured diaphram in the AFC housing.

 

[KMott]

I installed the EGT probe pre-turbo, where the instructions showed me (ISSPRO) If i remember right its about an 1 or so behind the turbo flange, centred over left port. The reason why i suspected the injection pump was because i had already done everything else possible. Replaced shutdown solenoid, afc diaphragm, had pump timed, turbo wastegate actuator, fuel pressure, volume, restriction tests, afc tests... and on and on. I have talked to the diesel injection shop, and he seems to think the pump may be the problem.



Matt, i installed the 10 plate a little more towards the front of the truck than the guide plate would have allowed it. i also reset the governor because it was way off (hitting muddle of fuel plate)

The afc housing is full forward, and i have removed the afc to make sure its not the problem. Only thing i notice about the truck is it shutters at lower rpm's.

Thanks again.

 

[Forrest Nearing]

shoulda done 370's and 191's

 

[bmoeller]

KMott,

With a boost leak you will see higher ets along with lower boost pressures.

Rog

Depends on where the boost leak is. If the leak is on the line going to the AFc housing diaphram, both numbers will be lower. Less boost to the AFC, means less fuel. Which = lower boost AND EGTs.

 

[bmoeller]

Only thing i notice about the truck is it shutters at lower rpm's.

What is your fuel pressure like? If it is OK, it may need to benched tested and calibrated. The flow of the pump may be out of balance.



What about the governor springs?

 

[Matthug]

If you've pulled the AFC housing off and it didn't make a difference, and your fuel pressure checks out than it pretty much has to be the pump. Look at this like a forced BOMB to upgrade to a 215 pump!

 

[KMott]

Thanks again for the replies. I measured fuel pressure at idle and was getting about 25-30 psi, and running down the road was even higher. I was almost certain the pump was the problem, but i figured since i was going to be doing injectors and a fuel plate anyways, i may as well try them first, before ripping the pump off. I may get my pump looked at, or just replace it with a 215 pump. Governor springs are stock btw

Thanks, kevin

 

[Matthug]

Hmm, when I did the 3KGSK my EGT's went up over 200 degrees because of the extended RPM fueling. Perhaps you need to try this first. The stock springs with start to defuel at 2200 RPM and completely shutdown at about 2700. Maybe there is nothing wrong, bmoeller just made an excellent point about the springs that everyone else was overlooking and assumed you already had.

 

[KMott]

I called Piers today, and the guy on the tech line said the egt and boost numbers seemed real low with my mods, even with stock gov. springs. I think its safe to say ive got some kind of pump problem.

Im in no rush though, the thing starts and runs ok. Ill just wait until i find a good deal on a tested and calibrated 215 pump, and swap mine out.

kevin

 

[Cooker]

Ill just wait until i find a good deal on a tested and calibrated 215 pump,

I do not know what you are looking to spend but I happen to have one for sale