2009 ISX White Smoke No Codes

[Winniethebish]

(11-06-2024 )Maxtech15 Wrote:  

(11-06-2024 )Winniethebish Wrote:  

(11-06-2024 )Maxtech15 Wrote:  Perform some snap test with the exhaust unplugged before the aftertreatment. If you got to much smoke perform snap test in cut out. disable 1,2 or 3 cylinder and make different combination to find which cylinder produce the excessive smoke.

Is that on insight or are you just talking about running it with the exhaust off before the dpf?

Don’t need any software for snap acceleration test. Unplug the exhaust before the DOC. You can find good video over the web on how to perform it. Done snap test in cut out only if you find excessive smoke.
For cut out you need insit to perform it.

Yeah we have insight and have done all the cutout tests everything tested good. I'm in the middle of taking out the dpf to give it a look over and we'll do a snap test as well.

[Winniethebish]

(11-06-2024 )Rawze Wrote:  

(11-06-2024 )Winniethebish Wrote:  ...
Everything is stock so far but we are really contemplating de-mandating it to see if that helps. It starts great no smoke at idle only while driving. At times I see puffs smoke, other times there's just a straight cloud of smoke and sometimes it's clean. But it does seem to be getting worse as time goes on. Been fighting this for over a year now.

YOUR MOST LIKELY CHASING A BIG FAT NOTHING-BURGER!!!! ..

The DPF system IS GOING TO MAKE HUGE PLUMES OF WHITE/geayish SMOKE on occasion.. IT IS PERFECTLY NORMAL.. AND ESPECIALLY SO IN COLDER AND WETTER WEATHER!!!>..


(read this quote)...

Rawze Wrote:As far as white smoke goes when going up a hill ...

It is perfectly normal for the truck to smoke like hell (white/bluish smoke) when it does a regen when going up a hill. My truck did this even when the truck was brand spanking new, nothing wrong with the system or engine at all. The smoke would be so bad sometimes that you could not even see the trailer behind you, especially when the weather got cooler. It is because sometimes fuel will build up in the DPF because it is not hot enough down there to ignite, then it ignites all at once when you hit a hill or an on-ramp. When it finally does ignite, it is so bad, you can't even see behind you for the cloud of white smoke as it starts to burn, sometimes for several minutes.

DO AN EGR TUNE-UP!. Replace all the old sensors, especially that IMAP, etc... and Make sure that the engine itself is running in tip-=top shape. As healthy as possible.

Make sure you don't have any exhaust leaks.

CLEAN THAT DOSER INJECTOR TIP behind that turbo really well .. or replace the doser if it is more than 400k miles old.

Pull the DOC and DPF (and post pictures of their faces) if it has been more than than 250k miles since the last time they have been removed and cleaned. Have them cleaned (Baked, de-ashed, flow tested) at a certified stealer#hit for a few hundred bucks.

Make sure the engine has no coolant loss whatsoever. If so then find the leaks.. and test the EGR cooler too.
ref: https://youtu.be/tNmQnAJzmVo?si=xppXj8j0DRSVd4QJ

Ok good to know. I'll look over everything real good and keep a close eye on the coolant and get back to you. So technically demandating it would take care of the smoking issue if we were to go that route?

[Rawze]

(11-06-2024 )Winniethebish Wrote:  ...
Ok good to know. I'll look over everything real good and keep a close eye on the coolant and get back to you. So technically demandating it would take care of the smoking issue if we were to go that route?

it would, unless it is valve guide seals or something else. What deposits are on the face of the DOC can be an indicator on how healthy the engine itself is and if it is burning oil, coolant, etc.

some examples: http://rawze.com/forums/showthread.php?t...7#pid10137

[Winniethebish]

(11-06-2024 )Rawze Wrote:  

(11-06-2024 )Winniethebish Wrote:  ...
Ok good to know. I'll look over everything real good and keep a close eye on the coolant and get back to you. So technically demandating it would take care of the smoking issue if we were to go that route?

it would, unless it is valve guide seals or something else. What deposits are on the face of the DOC can be an indicator on how healthy the engine itself is and if it is burning oil, coolant, etc.

some examples: http://rawze.com/forums/showthread.php?t...7#pid10137

So we took the exhaust pipe off between the turbo and dpf and did a snap test. A little black smoke like you would expect but nothing else. We ran it down the road no smoke at all. Than we put the pipe back on and ran it down the road white smoke almost instantly. So I agree with rawze. I don't think there's anything wrong. That being said I think we might still demandate it to get rid of it.