Blue Smoke on Deceleration
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Joined: Mar 2004
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Blue Smoke on Deceleration
That may be a bit misleading as the truck never moved. Yesterday I looked at a '90 7.3 2WD with a toasted E40D. The incentive was the Banks Turbo.
It had been sitting a long time, we finally started it with a jump from a new Powerstroke (yeesh...)
Anyhow, black smoke on revving (OK), but lots .. clouds.. of blue when we let off.
What does the blue mean ?
The guy wanted too much, if he wakes up and calls back I may consider it.
It had been sitting a long time, we finally started it with a jump from a new Powerstroke (yeesh...)
Anyhow, black smoke on revving (OK), but lots .. clouds.. of blue when we let off.
What does the blue mean ?
The guy wanted too much, if he wakes up and calls back I may consider it.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Might not mean anything other than sitting for too long. Its hard to say if something is really wrong or it just needs to be driven at higher EGTs to clear its throat after sitting for too long. Might also be timing off. Guys often like to go overboard with advancing the timing when they hear that you get *more power* and take it to an extreme.
I know what you mean about wanting too much for IDI or IDI turbo related stuff. On the island here guys seem to think they're made of gold or something.
I know what you mean about wanting too much for IDI or IDI turbo related stuff. On the island here guys seem to think they're made of gold or something.
Posting Guru
Joined: Feb 2008
Posts: 1,795
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From: Lubbock, Texas
holy zombie thread batman!
have you had any updates on your post?
My new truck does the same thing.
If you are driving and totally let off the accelerator, there is NO smoke. If you just pull back the accelerator to (for example lets say half throttle) half throttle then I get white-ish, gray-ish, blue-ish smoke for a second or two then it goes away. The smoke also goes away if I give it more throttle after releasing.
I just drove it from Austin, TX to dallas, TX and my oil level has not changed enough to show on the dipstick.
Im off to do a search on the CDR valve that was mentioned above.
have you had any updates on your post?
My new truck does the same thing.
If you are driving and totally let off the accelerator, there is NO smoke. If you just pull back the accelerator to (for example lets say half throttle) half throttle then I get white-ish, gray-ish, blue-ish smoke for a second or two then it goes away. The smoke also goes away if I give it more throttle after releasing.
I just drove it from Austin, TX to dallas, TX and my oil level has not changed enough to show on the dipstick.
Im off to do a search on the CDR valve that was mentioned above.
Posting Guru
Joined: Jan 2001
Posts: 1,101
Likes: 2
From: Poway, CA
This is a thread I started on return lines, but we talked a little about CDR valves as well:
https://www.ford-trucks.com/forums/1...tructions.html
Hope this helps. It's a really easy job. 2 bolts and a hose clamp or two.
Mike
https://www.ford-trucks.com/forums/1...tructions.html
Hope this helps. It's a really easy job. 2 bolts and a hose clamp or two.
Mike
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BrendanFitz
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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Jan 1, 2016 11:32 PM
1994, 50, 73, 73idi, 73l, black, blue, decelerate, deceleration, decelleration, diesel, ford, idi, powerstroke, smoke, trucks
