6.9 IDI at a loss.

[JustinC00]

Here’s a video of what I have going on. If anyone has any idea as to what is going on. I’m at a loss as to where to go from here. Is it a timing issues or too much fuel or what. If I put it in gear it’s just a thicker cloud that is more dark gray and the smoke never stops unless I put my foot into it and let off

 

[franklin2]

Need the back story. Did you just buy this truck? Does it run ok besides the smoke?

 

[JustinC00]

Sorry I’ve posted this before lol. Bought the truck about a year ago and I’ve tinkered with it quite a bit. New injectors, new return lines, fuel filter, and turned the fuel down quite a bit. It used to be a thick white cloud that smelled like partially burned diesel. Truck runs like a dream. As far as I know the pump is a new one, as well as the truck has about 98,000 miles. Idk if it’s rolled over or not. But there isn’t any bad knocking or loss of power anywhere within the powerband. The weirdest thing it does right now is if I turn I believe right all the smoke goes to black and it will roll coal as long as I keep that general direction, and sometimes it doesn’t act so finicky, it’s very sporadic when it wants to throw a gray/ white cloud. Installed an egt sensor last week and those are within normal ranges. Also sorry for saying it’s a video, I could only post a pic

 

[JustinC00]

Do you guys think maybe a pickup in the tank has a hole in it somewhere. I know the fuel lines up top on the motor are air tight.

 

[Farmer Rock]

Have you replaced the air filter? Black smoke is from too little air or too much fuel. I would suggest pulling the air filter off to see if it makes a difference, but don't run it long without the filter.

Air intrusion wouldn't cause black smoke like that, but will cause the rpms to surge at idle because there is now more air in the mix.


Rock

 

[IDIBRONCO]

I don't think that it would hurt to try advancing the timing a little bit to see what the does. Mark the IP and housing first so that you can put the timing back to where it is now in case it doesn't do anything or makes it worse.

 

[JustinC00]

Okay so I replaced the air filter yesterday. Which way is it to advance the timing. As I moved it a bit towards the passenger side and it cleared up the smoke to where it is rn.

 

[Brody]

Maybe it's time for a compression test. Could have a weak cylinder that doesn't burn properly

 

[JustinC00]

Quick little adage I have. Left home this morning and had black smoke, which I’m okay with as it wasn’t much more than a haze, but as soon as I turned left to get where I was going, it turned whitish gray. Any ideas?

 

[Brody]

Cracked block that open up cylinders depending on which way you're torquing it. Do a compression test

 

[riphip]

Try one more dimes' thickness turning the pump towards the passenger side (you are going in the right direction for advancing). Do not turn pump with engine running!

 

[JustinC00]

Quick question for the advancing timing operation. About how many degrees translates to inches. Like is it 1/16 in for ever half degree or something more dramatic. Thank you

 

[IDIBRONCO]

I'm not sure if there is a set amount. I think that each IP would be slightly different. Just like each IP likes a slightly different timing. Some say that theirs runs great at 8*, some say it's 6.5*, others say something different.

 

[JustinC00]

Well guys. I got a fix it ticket today for the smoke. I wasn’t even rolling coal. Hopefully I can figure this out soon. If I have any other questions I’ll be sure to come back. Thank you

 

[riphip]

Quick question for the advancing timing operation. About how many degrees translates to inches. Like is it 1/16 in for ever half degree or something more dramatic. Thank you

If you do not have a timing meter, degrees will not translate. We use 'dimes thickness/width' as a safe measure of rotational movement of the pump. As IDIBRONCO stated, each pump may have slightly different calibration.

That EXHAUST in the bed will get you problems in Comiefornia