Completely stumped!

[Derek@Vision Diesel]

Who's tunes?

Tony Wildman



Anyway else have anything I could maybe try?

 

[Derek@Vision Diesel]

Started the truck this morning after been sitting in 15* weather for over a day... Took longer for ICP to come up than normal, once it did the truck fired and rev'd to like 1500-1800rpm's and puff'd black. Only lasted a second before coming back to idle, but im guessing that is from the excessive DC of trying to build pressure, that once it fired it spiked the ICP?

Going to change out the CPS today just for ****s and giggles because i havent done that yet. Still hoping someone has an idea that i havent thought of on why ICP takes a couple seconds to rise up at start.

 

[qcfarmer]

I had the same problem on my 97. I put a modded 17 degree pump and was getting extended crank times when cold slightly extended when warm (hardly noticeable but still longer than normal) I put my stock 15 pump on and extended crank went away. Btw, previous owner of modded pump said it didn't cause extended crank on his truck do I also had it checked by a company that mods pumps and it tested good. Just saying...


Sent from my iPhone using Tapatalk

 

[Derek@Vision Diesel]

I had the same problem on my 97. I put a modded 17 degree pump and was getting extended crank times when cold slightly extended when warm (hardly noticeable but still longer than normal) I put my stock 15 pump on and extended crank went away. Btw, previous owner of modded pump said it didn't cause extended crank on his truck do I also had it checked by a company that mods pumps and it tested good. Just saying...


Sent from my iPhone using Tapatalk

thamks for the insight!!!!! That seems like whats going on here, definitely weird though!

I have run out of time to be pulling it apart at this point, i have to drive the truck 300 miles back home next weekend and then the live tuning is the following weekend.
Did you ever reinstall the modded 17*??

 

[qcfarmer]

Yes because I would would set CEL too easily with stock pump but modded pump would keep pressure fine with stage 1's and Tony's tuning. I just lived with extended crank issues.


Sent from my iPhone using Tapatalk

 

[qcfarmer]

On a side note, by then I could swap pumps in under an hour.


Sent from my iPhone using Tapatalk

 

[Derek@Vision Diesel]

On a side note, by then I could swap pumps in under an hour.


Sent from my iPhone using Tapatalk

Yeah swapping pumps is fairly simple! A single much more so than twins, but I was hoping to find some other issue not related to the pumps themselves. Im fine with living with an extended crank time for right now, as long as its not hurting me once the truck is running

 

[Derek@Vision Diesel]

Installed a melling LPOP this weekend and no help....Running out of things that can possibly cause the delay'd start issue

 

[Big Bore]

Not sure if I or someone else suggested this earlier, but have you tried running a known good stock pump? I've a pretty good idea what's causing the extended crank.

 

[Derek@Vision Diesel]

Not sure if I or someone else suggested this earlier, but have you tried running a known good stock pump? I've a pretty good idea what's causing the extended crank.

I have not. Put a stock pump on at this point wont work, Tony will be here Friday to live tune it.
If its the pumps causing the slow start ill live with it for awhile, just as long as its not soemthing simple that i can fix.

Your thinking possible one pump getting weak? Because generally they would make the ICP build quicker.... and my ICP is staying at 0 for 2 seconds of cranking with 90% DC, then bam it jumps up to 450 and fires off

 

[Big Bore]

Did you swap out the injectors yet? Have you checked the IPR/IPR 0-rings?

 

[Derek@Vision Diesel]

Did you swap out the injectors yet? Have you checked the IPR/IPR 0-rings?

Yes i swapped injectors.... yes i swapped IPR

 

[Wackerjr]

man bunch of ide's here....

Stroker... have you tried to pull tony's chip and see if it starts better?

you do not have a pump issue, they are not "bleeding down" if the res is 3/4 full... IF the rails bled down that is an injector issue, not pump related as the rails will not be emptied backwards through a reservoir that is higher than the pumps....

pumps are not rocket science they pump or they don't... yours by all your postings are pumping....

The day you started it and puffed black smoke....it was colder that day wasn't it.....


you need your tunes adjusted, your problem only came about because you installed the pumps and it amplified an already existing problem....

how does it start after you have drove it around for a bit and got it warm, or when you plug it in overnight?

 

[Vengeance]

man bunch of ide's here....

Stroker... have you tried to pull tony's chip and see if it starts better?

you do not have a pump issue, they are not "bleeding down" if the res is 3/4 full... IF the rails bled down that is an injector issue, not pump related as the rails will not be emptied backwards through a reservoir that is higher than the pumps....

pumps are not rocket science they pump or they don't... yours by all your postings are pumping....

The day you started it and puffed black smoke....it was colder that day wasn't it.....


you need your tunes adjusted, your problem only came about because you installed the pumps and it amplified an already existing problem....

how does it start after you have drove it around for a bit and got it warm, or when you plug it in overnight?

Jeremy, I think Frank was asking who was going to do the live tuning.

I do believe Derek has this issue no matter whose tunes he is running, I know he has mine, Beans, PHP and not sure who else.

 

[Big Bore]

man bunch of ide's here....

Hey now, we're all just trying to help here. LOL

I've been reading your posts since TDS before the Termies were a twinkle in your eye and you were way ahead of me then as far as diagnosing a 7.3 so I certainly bow to your expertise in the matter.
:bowfast:

 

[Big Bore]

how does it start after you have drove it around for a bit and got it warm, or when you plug it in overnight?

Injector o-rings.

 

[Wackerjr]

Jeremy, I think Frank was asking who was going to do the live tuning.

I do believe Derek has this issue no matter whose tunes he is running, I know he has mine, Beans, PHP and not sure who else.

And take it FWIW I am not bashing your tunes Tony....

These Obs trucks (as I am sure you know) have WAY more fueling in the stock files than a comparable superduty... remember they were set up with 90cc injectors... then you put in 3 times the fuel and wonder why it is long to start... needs more heat in the cylinder to fire all that extra fuel.....remember ol' Trubbs making 400 in a stock file...hmmmmm lol

What I was getting at is he is having the same issue most OBS guys complain about....

Have a hunch bump timing, lower fueling and the truck fires right off....

if the pumps make 3900... they are working....

Joe has no clue, problably has no idea what is going on internally in the pumps... and would bet a thousand dollar bill that could'nt explain how they could "bleed" through the pumps if his life depended on it...

really hate to see a guy get all this bs info, swap "parts" instead of dealing with someone with a little bit of knowledge, and finding out what the problem really is...simple fix that way.......

FWIW my vehicle twin pumps, tuned for stock pump, and Farmers 200%sureflows fires right off everytime....unless its cold....and it aint a GP system problem.

 

[Derek@Vision Diesel]

man bunch of ide's here....

Stroker... have you tried to pull tony's chip and see if it starts better?

you do not have a pump issue, they are not "bleeding down" if the res is 3/4 full... IF the rails bled down that is an injector issue, not pump related as the rails will not be emptied backwards through a reservoir that is higher than the pumps....

pumps are not rocket science they pump or they don't... yours by all your postings are pumping....

The day you started it and puffed black smoke....it was colder that day wasn't it.....


you need your tunes adjusted, your problem only came about because you installed the pumps and it amplified an already existing problem....

how does it start after you have drove it around for a bit and got it warm, or when you plug it in overnight?

I will pull the chip this afternoon and fire it up.

When its cold the crank time is 4-5 seconds (i know all GP system is in tip top shape, plugging in doesnt help). When its warm its 2-3 seconds. Both of those are longer than it should be

Jeremy, I think Frank was asking who was going to do the live tuning.

I do believe Derek has this issue no matter whose tunes he is running, I know he has mine, Beans, PHP and not sure who else.

I have Beans, PHP, TW, Cale (tyrant), custom files from up north, a couple ive tweaked myself etc...

And take it FWIW I am not bashing your tunes Tony....

These Obs trucks (as I am sure you know) have WAY more fueling in the stock files than a comparable superduty... remember they were set up with 90cc injectors... then you put in 3 times the fuel and wonder why it is long to start... needs more heat in the cylinder to fire all that extra fuel.....remember ol' Trubbs making 400 in a stock file...hmmmmm lol

What I was getting at is he is having the same issue most OBS guys complain about....

Have a hunch bump timing, lower fueling and the truck fires right off....

if the pumps make 3900... they are working....

Joe has no clue, problably has no idea what is going on internally in the pumps... and would bet a thousand dollar bill that could'nt explain how they could "bleed" through the pumps if his life depended on it...

really hate to see a guy get all this bs info, swap "parts" instead of dealing with someone with a little bit of knowledge, and finding out what the problem really is...simple fix that way.......

FWIW my vehicle twin pumps, tuned for stock pump, and Farmers 200%sureflows fires right off everytime....unless its cold....and it aint a GP system problem.

I have changed injectors within the last 50 miles, i went larger.

I changed the LPOP (mine had some wear, so it was worth the swap)

Ive got sensors and regulators of all sorts that i can swap and change around to find the issue, plenty of spare parts. But im pretty sure ive swapped everything i know of.

I also have Minotaur, so if there is something in the tuning you think would help this. A)I can fix it with some guidance and B)Tony will be here this coming weekend, so we should be able to hit the nail on the head.

The biggest reason for this long thread is to get this corrected BEFORE tony gets here, i dont want a mechanical issue that we have to repair while he is here

 

[Vengeance]

And take it FWIW I am not bashing your tunes Tony

Never took it that way Jeremy, you and I are well beyond that lol, just trying to clear the water a smidge.

 

[CSIPSD]

Joe has no clue, problably has no idea what is going on internally in the pumps... and would bet a thousand dollar bill that could'nt explain how they could "bleed" through the pumps if his life depended on it...

really hate to see a guy get all this bs info, swap "parts" instead of dealing with someone with a little bit of knowledge, and finding out what the problem really is...simple fix that way.......

FWIW my vehicle twin pumps, tuned for stock pump, and Farmers 200%sureflows fires right off everytime....unless its cold....and it aint a GP system problem.

Hey ***stick... Why drag me into this when I was trying to help? Please tell me where I said it was leaking thru the pumps. I suggested it could be an injector leak down issue or a HPO res issue... If you would like I will go back and quote the posts?

I know you have a hard on for me because I dont pimp your pumps, your tuner or something, but at least some dont jump in on page 11 to tell us all we are dumb.

typical...