Seized 7.3?
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Elder User
Joined: Dec 2011
Posts: 533
Likes: 0
Gotcha. Well I got everything put back together and started it up. Has a bit of greyish smoke coming out of the tail pipe and a lot of rough idling. I'm wondering if this has something to do with water in the fuel system? I heard that water in the fuel can cause surging and it often would surge when I was low on fuel or right after I would fill up. How would I go about checking this? I know there's a fuel/water separator but in the two years I've owned it I haven't touched it. Thoughts?
Thanks
Thanks
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Gotcha. Well I got everything put back together and started it up. Has a bit of greyish smoke coming out of the tail pipe and a lot of rough idling. I'm wondering if this has something to do with water in the fuel system? I heard that water in the fuel can cause surging and it often would surge when I was low on fuel or right after I would fill up. How would I go about checking this? I know there's a fuel/water separator but in the two years I've owned it I haven't touched it. Thoughts?
Thanks
Thanks
Thread Starter
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Elder User
Joined: Dec 2011
Posts: 533
Likes: 0
Okay I need to know how to drain the fuel out. I know it's simple but while waiting for your reply I went out and tried and apparently the 10% rule beat me. I couldn't figure it out. Google was useless to me on this one.
Thanks again
Thanks again
Fleet Owner
Joined: Aug 2004
Posts: 20,419
Likes: 197
From: AZ
Pull the yellow lever on the top center left of the fuel bowl and it drains out the front left of the motor. I think the lever moves 90° to open. I used to set a 20 oz pop bottle on top of the tie rod with the drain line into to the top.
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
He's working on an IDI Glenn. He got in the wrong section, but everybody is helping him anyway. 
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Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
Thread Starter
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Elder User
Joined: Dec 2011
Posts: 533
Likes: 0
Ha! I know I'm in the wrong section of the forum but you guys seem to know alot about these trucks, even the IDI's. I really appreciate everyone's help so far. So my guess is the above explanation on how to drain will not work on my IDI?
Thanks again and A+ for all
Thanks again and A+ for all
Lead Driver
Joined: Mar 2006
Posts: 5,098
Likes: 1,504
From: western SD
You are right, Glenn's way will not work on the IDI. These have a 2 piece fuel filter, a replaceable upper filter, and a lower aluminum lower bowl that screw onto the upper filter. the lower bowl will have a **** that is connected to the drain screw,which is on the very bottom of the bowl. Turn the **** to open the drain screw. If it has been a while, get a new filter and change it, filling the filter with Powerservice diesel klean, or Howes diesel treatbefor installing the new filter. Then start it, let it run for 20-30 seconds then shut it off, and let it soak over night, then take it out and run it like you stole it. This will clean out the deposits from the injector pump, and injectors, and may smooth out your rough idle.
Thread Starter
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Elder User
Joined: Dec 2011
Posts: 533
Likes: 0
You are right, Glenn's way will not work on the IDI. These have a 2 piece fuel filter, a replaceable upper filter, and a lower aluminum lower bowl that screw onto the upper filter. the lower bowl will have a **** that is connected to the drain screw,which is on the very bottom of the bowl. Turn the **** to open the drain screw. If it has been a while, get a new filter and change it, filling the filter with Powerservice diesel klean, or Howes diesel treatbefor installing the new filter. Then start it, let it run for 20-30 seconds then shut it off, and let it soak over night, then take it out and run it like you stole it. This will clean out the deposits from the injector pump, and injectors, and may smooth out your rough idle.
I'll keep you posted, I appreciate it.
Thread Starter
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Elder User
Joined: Dec 2011
Posts: 533
Likes: 0
Okay so I've replaced the filter, put in the fuel additive, and bled the valve when it was put back together. Absolutely NO CHANGE. I'm stumped, it must be something bigger. Or something smaller that I haven't thought of. I'm thinking of hauling it into the Diesel Specialist shop this week..
I've really appreciated all of the replies and insight. Anything else welcome of course! I'll keep y'all posted.
I've really appreciated all of the replies and insight. Anything else welcome of course! I'll keep y'all posted.