12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Weird knocking noise

Thread Tools
 
Search this Thread
 
Old Jul 29, 2014 | 12:37 AM
  #1  
Brokencummins's Avatar
Thread Starter
|
Diesel Fan
Joined: Jul 2014
Posts: 22
Likes: 0
Default Weird knocking noise

I took my 97 12 cummins to fuel station. I left it running and I pop the cap got to about 15 bucks it shut off on me. I tried starting it. Wouldn't run then I got it home I was priming it and bleeding my injectors. I crank and cranked on in. I bleed it some more then I cranked it over then I tried again I got a weird noise. Sound like my starter wasnt going out far enough but it is cause my fans spinning. Is it possible it got air locked and broke my crank or connecting rod to a piston??? 😢
 
Reply
Old Jul 29, 2014 | 02:53 PM
  #2  
4x4manonbroke's Avatar
Diesel Bomber
Joined: Jun 2010
Posts: 3,202
Likes: 143
From: Tacoma
Default

Sounds like your Fuel shut off solenoid is faulty ..
 
Reply
Old Jul 30, 2014 | 12:15 AM
  #3  
LostSoul71's Avatar
Diesel Enthusiast
Joined: May 2014
Posts: 163
Likes: 1
From: Niagara Falls ON CA
Default

As previously asked, where is the noise coming from? If it is at the starter, then check the items I mentioned to make sure it is able to engage properly. If it is not at the starter and you think it is internal. Stop now and get another opinion, before you do major damage.
 
Reply
Old Jul 30, 2014 | 08:44 AM
  #4  
Bigg Redd's Avatar
Diesel Bomber
Joined: Oct 2010
Posts: 2,448
Likes: 311
From: TEXAS
Default

Originally Posted by 4x4manonbroke
Sounds like your Fuel shut off solenoid is faulty ..
X2 for the shut-off solenoid.
 
Reply
Old Jul 31, 2014 | 12:04 AM
  #5  
LostSoul71's Avatar
Diesel Enthusiast
Joined: May 2014
Posts: 163
Likes: 1
From: Niagara Falls ON CA
Default

Faulty fuel shut off may prevent the start, but it is not going to give him strange noises. I am more concerned with the noise than the no start. If something is damaged and he continues to try and start it, I do not want to see him doing more damage.
 
Reply
Old Jul 31, 2014 | 12:09 AM
  #6  
4x4manonbroke's Avatar
Diesel Bomber
Joined: Jun 2010
Posts: 3,202
Likes: 143
From: Tacoma
Default

well the knocking noise can be Lift Pump .. non fatal if it goes .. a rod ... but thats not likley ...

Might just try to pull the feed line to IP from LP and see if its pumping while its spinning over .. just to check ..
 
Reply
Old Jul 31, 2014 | 12:20 AM
  #7  
LostSoul71's Avatar
Diesel Enthusiast
Joined: May 2014
Posts: 163
Likes: 1
From: Niagara Falls ON CA
Default

4x4 I just read his update on his other post, looks like the started did take a crap on him. I wonder if this was the root of all his issues. No start and noise. Hopefully he updates and lets us know.
 
Reply
Old Jul 31, 2014 | 12:22 AM
  #8  
4x4manonbroke's Avatar
Diesel Bomber
Joined: Jun 2010
Posts: 3,202
Likes: 143
From: Tacoma
Default

yeah I just read it after i posted here too .. LOL ..
 
Reply
Old Jul 31, 2014 | 11:27 AM
  #9  
Brokencummins's Avatar
Thread Starter
|
Diesel Fan
Joined: Jul 2014
Posts: 22
Likes: 0
Default

Thanks for the help and yea the starter did go up. What's the best way to prime it again
 
Reply
Old Aug 1, 2014 | 12:09 AM
  #10  
4x4manonbroke's Avatar
Diesel Bomber
Joined: Jun 2010
Posts: 3,202
Likes: 143
From: Tacoma
Default

Fill fuel filter with ATF , then pump the LIft pump and have some one turning engine over with new starter ... pump for a few seconds first till it gets kinda hard to pump .. , Then start turning engine over to attempt to start ...
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
chootem
1st Generation Dodge Cummins 89-93
2
Jul 18, 2015 08:29 PM
Boatman
12 Valve 2nd Gen Dodge Cummins 94-98
1
Mar 20, 2015 10:00 AM
Dak_summers
Ford Powerstroke 94-98 7.3L
5
Jan 22, 2015 08:45 PM
2FordStrokers
Ford Powerstroke 99-03 7.3L
2
Jan 11, 2015 09:40 PM
dutchsupreme
Diesel Engine Conversions
7
Dec 13, 2014 12:26 PM




All times are GMT -5. The time now is 08:55 AM.