Turbo Questions/Options/Trouble Shooting

[4x4dually]

if the tach is wiggling, it could be injection, not turbo

I agree...but everything is NEW and it ain't like I'm doing crazy junk. HO pump (factory replacement). NEW sticks. LP pressure is 14-15 regardless of throttle.

Would valve lash do any of this? That I haven't checked. 135K miles. Never adjusted.

 

[Rob24vCTD]

if the tach is wiggling, it could be injection, not turbo

As in???

 

[Scooter's Roofing]

some wierd VP44 voodoo? I don't know... compressor surge will make a woofing sound and show up as the boost needle jumping... but it shouldn't cause the tach to jump, especially with a manual tranny

 

[weazel]

id dang sure adjust the valves. it may help with your haze.. but if not, hey at least you know they are in back in spec, LOL.

 

[TheBigNasty]

The injectors have maybe .... 3000 miles on them since brand new. Surely to heck they don't need tested again....but that's an assumption. I was wondering if the bump from a PS to a PSP (65mm to a 71mm) would help but I don't want to do it if it won't. The noise is more of a woosh woosh woosh and RPM's surge and dance around. I know the BARK. Happens everytime I shift when blowing the doors off the Titan that likes to race.

I'm the typical engineer, I don't want to spend money unless I know it will work. But...I would like to bolt something on and try it for a week if someone has one layin' around....hint hint hint....:hehe:

I just crossed back into tx. I'll try to pick it up and bring it back with me sun night.

 

[MSLEDGE]

Sounds like my 02 has the same problem.... But it only does it when its cold. As soon as it reaches temp its gone. If I turn the comp off it almost goes away. I also have a new IP. It's been driving me nuts too. and I'm on stock sticks and turbo.

 

[Mudn_1]

The injectors have maybe .... 3000 miles on them since brand new. Surely to heck they don't need tested again....but that's an assumption. I was wondering if the bump from a PS to a PSP (65mm to a 71mm) would help but I don't want to do it if it won't. The noise is more of a woosh woosh woosh and RPM's surge and dance around. I know the BARK. Happens everytime I shift when blowing the doors off the Titan that likes to race.

I'm the typical engineer, I don't want to spend money unless I know it will work. But...I would like to bolt something on and try it for a week if someone has one layin' around....hint hint hint....:hehe:

did you have them popped yourself? I learned this the hardway, my first set were pissing from the get go, but the truck ran good so I never thought anything of it, some popped at around 240bar and some around 270ish!

I really can't see why that 65mm(towing) wheel would be surging? that doesn't make sense unless it being smaller in ratio with the .8 a/r housing having something to do with it.......

what kind of boost do you see?
try tightening the wastegate a little or clamping it off and see if it goes away, we had one not wastegating to early and it caused a bad surge, the map groove in the comp housing could be to big allowing it to surge also...

 

[4x4dually]

did you have them popped yourself?

No. I figued if I spent $700+ on a set of injectors, the dang things better be set right and work trouble free for at least a few years. Am I ignorant in thinking this?

what kind of boost do you see?

I see 40-43 at WOT on level 5. I see around 4 psi while driving at 70 on flat surface on the highway and normally about 8 on hills. When I tow #10,000 of cattle on my 24' steel trailer and gross around #21,000, on a long hill with my foot into it to maintain 75 mph I see around 21 psi with it wound up.