Can this 7.3 be saved???????? - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-10-2011, 03:46 PM
Member
 

Join Date: Jan 2011
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Can this 7.3 be saved????????

I have a 2001 F250 with a 7.3 and only 114000 miles. I bought it from a guy who hadn't had it running for a year because the starter went bad, the door was bashed in, and just didn't want to spend anything on it. I've been working on it off and on since last December. I have had the Ford dealer replace all injectors, glow plugs valve cover harnesses,and injector drive module just to get the service engine light to stay off. They also did a compression test and found 1 cylinder about 30 PSI lower that the rest. All the others were at 350 or so. (They also found a crack in the air intake hose between the air cleaner and the turbo.)I talked to a machinist about the low compression and he said the 7.3 was very hard to kill. He suggested running John Deere break in oil and some Marvel Mystery Oil for a couple of oil changes. The oil is only available in 10W30. He said if it had stuck rings it should loosen them up. I asked him about the bad air hose and he thought if it got dirt in it all 8 cylinders would be low, not just 1.
Well I have put 2000 miles on since I put that oil in, and have added 5 quarts of oil. IT smokes blue when cold, and at idle when hot. It sometimes feels as if it has a slight miss in drive when standing still, but other times it runs fine. Is there any hope save this thing without pulling the engine. The machinist said it probably could get by with just a good ring job, and throw it back together.
Getting tired of spending money on this thing. The whole front end also had to be rebuilt, (ball joints, idler arm etc.)is that normal for this few miles?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-10-2011, 08:05 PM
GAS GAS is offline
Compression Ignition Addict
 

Join Date: Jul 2007
Location: Pleasant Grove,Utah
Posts: 255
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Do another oil change, and use a quality 15W 40. Then you will know. Thirty pounds low on compression in nothing to get excited about, you talking less than a 10 % difference
Reply With Quote Quick reply to this message
  #3  
Old 12-11-2011, 05:00 AM
Member
 

Join Date: Jan 2011
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by GAS View Post
Do another oil change, and use a quality 15W 40. Then you will know. Thirty pounds low on compression in nothing to get excited about, you talking less than a 10 % difference
That's what I thought. The Ford dealer had a hard time getting the light to stay off and kept telling me the engine was shot. I said. OK so you put in a new engine the light will still be on if you don't find the electrical problem.
they did eventually get it fixed, but they didn't like it to go out that way.
I've been an ag diesel mechanic for 31 years, and IH always allowed 10% like you said. It just is annoying to see the blue haze out the exhaust. Can't be the turbo, could it? It's not loose and I see no external leaks, has good power. I'll go another 1000 miles or so and give it an oil change.
Are any of these oil additives any good? I have a 92 Chevy 3500 with the 6.5 diesel and I've been running 1 quart of Lucas Oil Stabilizer since I got the truck. I got over 300000 on the first engine, truck has 476000 on it now. I've never been a fan of the fix in a bottle, but that stuff seems pretty good.
Thanks for the reply!
Reply With Quote Quick reply to this message
  #4  
Old 12-12-2011, 11:58 AM
Member
 

Join Date: Dec 2010
Posts: 78
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
run a good 15-40 diesel oil like rotella. i wouldnt run the oil additives in it. if it has stuck rings id try running it hard for a few miles. if the turbo seal was leaking you'd see oil dripping out the exhaust and white smoke. it could be burning oil because the viscosity is lower?
Reply With Quote Quick reply to this message
  #5  
Old 12-13-2011, 08:30 AM
Member
 

Join Date: Jan 2011
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by lariat 7.3 View Post
run a good 15-40 diesel oil like rotella. i wouldnt run the oil additives in it. if it has stuck rings id try running it hard for a few miles. if the turbo seal was leaking you'd see oil dripping out the exhaust and white smoke. it could be burning oil because the viscosity is lower?
If it wasn't so cold up here in Iowa I'd put in some SAE 30 oil. I previously had a 99 F25o diesel and I ran Northland 15W40 in it. Also have 15W40 CaseIH oil in all my diesel farm tractors.
I did have it on my car trailer last weekend to haul a fertilizer tank home, about 160 mile round trip. Not a hard pull, though. But I did notice some oil on the right side of the trailer that came out of the exhaust. I should put it on my gooseneck flatbed and haul one of my tractors around for 100 miles or so, that ought to get it loosened up.
Reply With Quote Quick reply to this message
  #6  
Old 12-15-2011, 06:30 PM
Member
 

Join Date: Jan 2011
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What are most of you guys running for oil? When I worked for the CaseIH dealer they didn't think much of Shell Rotella, but I know it's pretty popular with big trucks.
Reply With Quote Quick reply to this message
  #7  
Old 12-15-2011, 06:37 PM
Compression Ignition Addict
 

Join Date: Dec 2010
Location: IOWA
Posts: 2,542
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Skype™ to 2003kingranch
i run rotella t6. 5w-40 starts great in the cold
Reply With Quote Quick reply to this message
  #8  
Old 12-15-2011, 06:50 PM
aussie=effie
 

Join Date: Apr 2010
Location: melbourne, australia
Posts: 253
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Smile saved

My baby only gets Penrite
Reply With Quote Quick reply to this message
  #9  
Old 12-16-2011, 05:42 AM
Member
 

Join Date: Feb 2008
Location: adel ia
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 2 reviews
northland 15-40 haven't had any problems yet 200000 and ticking
Reply With Quote Quick reply to this message
  #10  
Old 12-16-2011, 06:41 PM
Compression Ignition Addict
 

Join Date: Dec 2010
Location: Inglis, Florida
Posts: 709
Thanks: 6
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
You should probably get that tick looked at kuonen. LOL! Joke!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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
Display Modes

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



All times are GMT -8. The time now is 01:16 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors