Possible blown HG, need help to diagnose. - Page 2 - Ford Truck Enthusiasts Forums
 

Go Back   Ford Truck Enthusiasts Forums > Diesel > 1994.5 - 1997 7.3L Power Stroke Diesel
Log In 


1994.5 - 1997 7.3L Power Stroke Diesel SPONSORED BY:

Possible blown HG, need help to diagnose.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #16  
Old 07-16-2014, 04:15 PM
MOOSE_MACHINE's Avatar
MOOSE_MACHINE MOOSE_MACHINE is offline
Postmaster
 
Join Date: Mar 2004
Posts: 3,694
MOOSE_MACHINE has a good reputation on FTE.MOOSE_MACHINE has a good reputation on FTE.
I've read a few articles about head gasket quality and most say to stick with the ford ones. Felpro and a few others that I can't think of don't seem to have the quality.
__________________
Sometimes your the windshield, sometimes your the bug
1997 F-350 xlt cclb PSD 4x4 zf5, 160/80's, custom tunes, T500, DIY e-fuel, 6.0 i/c, 38R, 3" plenums, gauges, 4" turbo back exhaust, diy bellows, south bend clutch
1992 F-250 2wd eclb 5.8 farm truck
1989 F-350 4x4 7.3 c6 auto retiread
Nick
Reply With Quote
  #17  
Old 07-16-2014, 04:31 PM
williameub williameub is offline
Senior User
 
Join Date: Aug 2013
Posts: 239
williameub is starting off with a positive reputation.
Quote:
Originally Posted by Chris56ford View Post
The injector cups seal in two spots with green locktite, one on each side of the water jacket in the head. A crack in the cup in the area of the water jacket will put diesel in the coolant. But if the lower seal is not sealed right it will leak coolant and allow combustion gasses into the coolant system. There will be no raw diesel in the coolant system in this instance. He said all 8 cups were replaced, so a crack is unlikely but one might not be sealed well.
Thanks. I'll put that into my brain vault!

Might as well get the head fluxed if you end up pulling it out.

Keep us posted if you figure anything out.
Reply With Quote
  #18  
Old 07-16-2014, 05:14 PM
dev_jhnsn dev_jhnsn is offline
Junior User
 
Join Date: Apr 2010
Posts: 61
dev_jhnsn is starting off with a positive reputation.
Quote:
Originally Posted by Chris56ford View Post
They are probably fine, I was just explaining to williamub that there doesn't have to be diesel in the coolant with a cup leaking.

I think your only option at this point for the leak is to pull the head and see if its the head gasket, it most likely is. That sucks man!
Thanks for the help all. I will probably pull the head. Before I do, I really want to find the cause of the knock. If its in the bottom end, there's no sense in doing head gaskets just to have something else fail in the near future. I'm replacing a cracked tank on my other truck right now, but once that's done i'll poke around the powerstroke with a stethoscope and see what I can't find.
Reply With Quote
  #19  
Old 07-16-2014, 05:45 PM
dev_jhnsn dev_jhnsn is offline
Junior User
 
Join Date: Apr 2010
Posts: 61
dev_jhnsn is starting off with a positive reputation.
Just went and let the truck warm up and took it for a spin. I can honestly only hear the knock at idle and when i partially touch the throttle, then it just blends in with the rest of the noise. I can't generalize it to one area. With the stethoscope put to the exhause manifold, it was making all sorts of sounds, but it did it on both sides of the motor. It sounds like it's just the motor in general. I can't decide if its just a noise these motors make, or its abnormal.
Reply With Quote
  #20  
Old 07-16-2014, 06:21 PM
dizzyfingers03's Avatar
dizzyfingers03 dizzyfingers03 is offline
Senior User
 
Join Date: Feb 2011
Location: Lovettsville, VA
Posts: 438
dizzyfingers03 is gaining momentum as a positive member of FTE.
Is it like a steady tick,tick,tick? My truck's vacuum pump does that when it's a cold start at idle. As soon as it warms up, that noise seems to fade away (yes, I know I probably need to replace the vacuum pump). Could also be you have a small exhaust leak maybe? I've head those on the big truck diesels that I could swear was rod knock.
__________________
Nick

1996 F250 7.3 L PSD - Dana60 Swap, 6637 intake, 3" downpipe, Valair organic clutch, 160K miles
Reply With Quote
  #21  
Old 07-16-2014, 06:31 PM
dev_jhnsn dev_jhnsn is offline
Junior User
 
Join Date: Apr 2010
Posts: 61
dev_jhnsn is starting off with a positive reputation.
Quote:
Originally Posted by dizzyfingers03 View Post
Is it like a steady tick,tick,tick? My truck's vacuum pump does that when it's a cold start at idle. As soon as it warms up, that noise seems to fade away (yes, I know I probably need to replace the vacuum pump). Could also be you have a small exhaust leak maybe? I've head those on the big truck diesels that I could swear was rod knock.
the noise didn't fade at all throughout cold to warm. It doesn't quite sound like an exhaust leak, as my 95 460 has a really good one and it's a totally different sound. But I'm not too familiar with diesel exhaust leaks.
Reply With Quote
  #22  
Old 07-16-2014, 07:33 PM
dev_jhnsn dev_jhnsn is offline
Junior User
 
Join Date: Apr 2010
Posts: 61
dev_jhnsn is starting off with a positive reputation.
New update. I went through and unplugged each injector one at a time to see if the noise would disappear, to eliminate injector knock. Well the noise was still alive and well. Realized the best place i could hear the knock was laying under the motor.
Reply With Quote
  #23  
Old 07-16-2014, 09:26 PM
oldbird1965's Avatar
oldbird1965 oldbird1965 is offline
Post Fiend
 
Join Date: Aug 2004
Location: AZ
Posts: 16,729
oldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to beholdoldbird1965 is a splendid one to behold
Oh man, laying under the motor is loud! LOL
__________________
Glenn-3 PSD's
The 'Mule' 96 2WD F250 EC/LB auto PSD, semi-retired.
The 'Old Gray Mare' 97 dually cc, rest in peace. To be resurrected by a fellow FTEer!
The 'Babe the Blue Ox' 97 dually EC,T4 s366,DI IC,stage I's,Hydra,studs,springs,pushrods,swamps HVHF IDM,John Woods auto,FS2500 oil bypass,3"DP-4",SD dual tensioner,6.0 trans cooler,turbo silencer,adrenaline
Reply With Quote
  #24  
Old 07-16-2014, 10:55 PM
fordman67's Avatar
fordman67 fordman67 is offline
Post Fiend
 
Join Date: Dec 2005
Location: evansville in
Posts: 10,148
fordman67 has a great reputation on FTE.fordman67 has a great reputation on FTE.fordman67 has a great reputation on FTE.fordman67 has a great reputation on FTE.fordman67 has a great reputation on FTE.
Its when one of these is quiet that you should worry!
Reply With Quote
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
1991 ford bronco 302 running hot Berardini2121 1978 - 1996 Big Bronco 8 04-22-2016 11:49 PM
Extreme Oil Temperatures knuss3807 6.0L Power Stroke Diesel 66 04-20-2016 07:26 AM
cant fix failing bubble test Adam Callan 6.0L Power Stroke Diesel 29 01-31-2016 04:40 PM
Oil Coolant Delete - Whats new? Jeremy2792 6.0L Power Stroke Diesel 8 06-22-2015 08:22 AM
new oil cooler AGAIN, 24 degree deltas?? Enduroman 6.0L Power Stroke Diesel 82 09-22-2013 08:44 AM


Go Back   Ford Truck Enthusiasts Forums > Diesel > 1994.5 - 1997 7.3L Power Stroke Diesel

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump



All times are GMT -5. The time now is 11:35 PM.

 

Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup