IDI - BLOW BY QUESTION??? - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 9 Old 03-03-2011, 11:22 AM Thread Starter
Compression Ignition Addict
 
texasstroker's Avatar
 
Join Date: Nov 2006
Posts: 206
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
IDI - BLOW BY QUESTION???

How much is too much blow-by on an IDI motor???

Just bought a 1988 FORD F-350 CREW CAB 4X4 truck with a 7.3L IDI non turbo engine, automatic tranny with a 189-k miles. I tried to buy this truck last month and did not really notice any blow-by and the truck has been setting since. Bought it yesterday and notice it has blow-by now and someone has jacked up the dip stick trying to put it back in the tube and now the tube moves around.
Do I have engine problems or maybe the CCDR?
texasstroker is offline  
post #2 of 9 Old 03-07-2011, 12:36 PM Thread Starter
Compression Ignition Addict
 
texasstroker's Avatar
 
Join Date: Nov 2006
Posts: 206
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Am I the only one???

Am I the only person with an IDI truck that has blow by?????
texasstroker is offline  
post #3 of 9 Old 03-07-2011, 03:56 PM
Compression Ignition Addict
 
powerstrokes only's Avatar
 
Join Date: Oct 2007
Location: Magdalena NM
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
You are'nt the only one with blow by I guarantee! I have a '94 IDI Factory Turbo with almost 315,000 miles that looks like a tea pot and still runs great! I just bought a 1990 with a 116,000 miles and it has a little too. I think it is pretty common. I am just not going to worry about mine.

Fletcher
'90 F250 Supercab IDI 7.3
Banks Sidewinder Turbo
4'' straight pipe
116,000 miles

'94 F250 single cab IDI Factory Turbo 7.3
3'' banks down pipe
Banks pyrometer
3 1/2'' straight pipe
K&N Air filter
Hypermax air intake
Hydrogen Generator
Pump turned up
Timing advanced
315,000 miles!



'89 F250 4x4 supercab 7.3 IDI
4'' exhaust
pump turned way up!!!
297,000 miles
powerstrokes only is offline  
post #4 of 9 Old 03-15-2011, 05:55 AM
Compression Ignition Addict
 
Join Date: Oct 2010
Location: Illinois
Posts: 162
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by powerstrokes only View Post
You are'nt the only one with blow by I guarantee! I have a '94 IDI Factory Turbo with almost 315,000 miles that looks like a tea pot and still runs great! I just bought a 1990 with a 116,000 miles and it has a little too. I think it is pretty common. I am just not going to worry about mine.
I agree with powerstroke only. Mine does as well and I don't worry about it either.
itn69 is offline  
post #5 of 9 Old 03-15-2011, 07:10 AM Thread Starter
Compression Ignition Addict
 
texasstroker's Avatar
 
Join Date: Nov 2006
Posts: 206
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
WOW, guess something maybe wrong with my other 3 then. None of them have any blow by at all. 1-1993 F-350 with 190-k, 1 1992 F-450 with 347-k and a 1991 F-350 with 249-k.... This is the only IDI truck I have ever owned with blow by, but you are right, it runs good....
texasstroker is offline  
post #6 of 9 Old 03-17-2011, 06:49 PM
Compression Ignition Addict
 
powerstrokes only's Avatar
 
Join Date: Oct 2007
Location: Magdalena NM
Posts: 525
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
The '90 I just bought has a Banks turbo, and they put an adapter in front of the oil filler for the tube that usually runs from the valve cover to the intake, I am thinking (I am NOT a mechanic) that you will see more blow-by because of the position of the oil filler cap. I don't know??????????? I have never checked my 89 IDI with 290something thousand miles, I imagine it has blow-by too. My '94 with 315,000 miles does have significantly more blow-by than the '90 though. I am just going to run the heck out of them. I have gone back to all IDI's now because I trust them, I can do a lot of work on them myself, and the parts are a fraction of what Powerstrokes cost and I simply just like them!! Oh yea and I don't owe money on them!

Fletcher
'90 F250 Supercab IDI 7.3
Banks Sidewinder Turbo
4'' straight pipe
116,000 miles

'94 F250 single cab IDI Factory Turbo 7.3
3'' banks down pipe
Banks pyrometer
3 1/2'' straight pipe
K&N Air filter
Hypermax air intake
Hydrogen Generator
Pump turned up
Timing advanced
315,000 miles!



'89 F250 4x4 supercab 7.3 IDI
4'' exhaust
pump turned way up!!!
297,000 miles
powerstrokes only is offline  
post #7 of 9 Old 03-24-2011, 12:47 PM Thread Starter
Compression Ignition Addict
 
texasstroker's Avatar
 
Join Date: Nov 2006
Posts: 206
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Ok, figure this out.... After I drove this thing a week or so, got the dip stick tube back in the block/pan where it goes and I checked for blow by again today just to see and I have about 1/3 of what it was last week....

Figure that out!!!!
texasstroker is offline  
post #8 of 9 Old 03-25-2011, 09:21 PM
Compression Ignition Addict
 
FordGuy100's Avatar
 
Join Date: Jun 2008
Location: Silverton, OR
Posts: 2,492
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
Rule with IDI's and blow by. With a fully warm engine, idling, take the oil cap off. Now manually increase the RPM's by moving the throttle lever on the IP. The blow by should "disappear" by about 11-1200rpm's. Mine will disappear at roughly 900 rpm's.

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
FordGuy100 is offline  
post #9 of 9 Old 03-26-2011, 07:35 PM Thread Starter
Compression Ignition Addict
 
texasstroker's Avatar
 
Join Date: Nov 2006
Posts: 206
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thats all fine and dandy, but still does not tell me WHY it had a pretty good amount of blow by 2 weeks ago out of the oil cap and dip stick tube (after setting for a couple of months) and now there is VERY LITTLE out of the oil cap and NONE out of the dip stick tube since I have been driving it every couple of days and actually put the dip stick tube back into the block/oil pan like it belongs.
texasstroker 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