'99 SD bogging/smoking - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 11-14-2010, 03:41 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
'99 SD bogging/smoking

have a '99 F-250 7.3 powerstroke. 180k miles on it. All stock.

The truck runs great when it is cold. Once the engine warms up and is under load when driving it will start bogging down and losing power while throwing out some blueish colored smoke from the exhaust.

The problem is even worse if you downshift to second to let the engine brake the truck while going down a hill. When you hit the gas again it acts like the engine wants to quit and throws out a huge cloud of blueish smoke.

If you stop the truck and put it in neutral and punch the throttle it seems to clear itself out and run fine again.

I originally thought it was a problem with the injector harness but I did the Ohm test to the pins and everything is within specs.

Can someone point me in a direction here?
gregpro50 is offline  
post #2 of 6 Old 11-14-2010, 01:46 PM
Compression Ignition Addict
 
orng1's Avatar
 
Join Date: Oct 2008
Location: Paramount, CA
Posts: 956
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
Odd that you have extra smoke and loss of power. Seems like you you might have a bad turbo. How's it boosting, you have a gauge.

Bob
2001 F250 SRW Reg cab, long bed, 80k miles.
Now with DP tuner, Airaid intake and 4" Magnaflow turbo back exhaust.
orng1 is offline  
post #3 of 6 Old 11-14-2010, 02:54 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I don't have a guage but don't notice any loss in boost. There is no play in the turbo shaft. My experience with turbos is that if they go bad then they go bad. If the seal went then it should smoke all the time.
gregpro50 is offline  
post #4 of 6 Old 12-08-2010, 02:06 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Found the problem and I thought I would let you guys know...

Oil foaming.

I'm guessing it is from silicone from some recent engine repairs.

Some Fleetrite anti-foam oil additive and the truck runs like new.
gregpro50 is offline  
post #5 of 6 Old 12-08-2010, 08:00 PM
Compression Ignition Addict
 
orng1's Avatar
 
Join Date: Oct 2008
Location: Paramount, CA
Posts: 956
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
Feedback Score: 0 reviews
I'm really surprised, how did the oil go bad?

Bob
2001 F250 SRW Reg cab, long bed, 80k miles.
Now with DP tuner, Airaid intake and 4" Magnaflow turbo back exhaust.
orng1 is offline  
post #6 of 6 Old 12-08-2010, 10:48 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Nov 2010
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
The oil pan was just changed. The sealant used on the pan can make the oil foam and aerated oil loses the hydraulic ability to actuate the injectors properly.

I used Valvoline 15w40 diesel oil and the sealant was the Ford recommended sealant for diesels but it still did it. The only thing I am thinking is that I didn't wait long enough for the sealant to cure before running the engine.

The oil didn't really go bad, it was just contaminated. The diesel shop around here said the issue I had is actually pretty common after engine repairs. They also recommend to use Rotella oil since it has less tendancy to foam.

I really can't believe how well the truck runs now. It seems to idle smoother and have more power than I remember.
gregpro50 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome