Too much smoke????

[Bcurtman]

My truck seems to smoke a LOT. It is a NON-TURBO multifuel. It does not smoke at all when cruising under no-load, but as soon as I hit a hill I can literally lay out a rope of smoke. Coming back from a car show recently, my friends in a Model A had to ask me to let them in front, as the smoke was getting in the car with them on every grade.

If someone could tell me (or better yet, show me in pictures) how to make some adjustments to my injection pump to tone down the smoke, I would really appreciate it. The pump is safety wired, but I know the previous owner had it off the truck. He may have turned it up and put the wires back on the screws. I do have the FDC bypassed as well, and I understand a little detuning is recommended after that is done-and it has not been. Thanks!

 

[wb1895]

My non turbo is the same way. From what I understand, there isnt much you can do about it other that do a turbo upgrade.

 

[Clay James]

That's normal for non turbos. The turbo was added mostly to clean up the exhaust.

 

[cbvet]

My non-turbo Deuce doesn't smoke nearly as much lately as my turbo Deuce. Both burning 100 percent filtered WMO in the summer.
But then again I've noticed a drop in power & speed in the non-turbo truck. Probably time to change fuel filters

 

[MDSA]

Definitely normal. Check out this thread of my non torso Deuce on I-40.

http://www.steelsoldiers.com/upcoming-events/15942-meetings-hickory-nc-8.html#post301558

 

[jdknech]

my M35A2C non-turbo does the same thing... now if i just had some power to go with all that smoke anyone done a turbo "upgrade" to there non-turbo??

 

[steelandcanvas]

my M35A2C non-turbo does the same thing... now if i just had some power to go with all that smoke anyone done a turbo "upgrade" to there non-turbo??

I did a turbo upgrade on my '71, got rid of the smoke and she ran like a scalded ape. I don't know for sure, but it seems as though the fuel is turned up a bit on the naturally aspirated multifuels. If you do install the turbo, I would definitely advise installing a EGT Pyrometer, just to keep a eye on your temp.

 

[ratat98]

Smoke ain't nothing. The PO (91W350) took this video of my deuce smoking, and it HAS a turbo.
[media]http://www.youtube.com/watch?v=YwCqiuW__Ak&list=UU6KLw1yfYsHW8HnJyRXt87Q&index=17&feature=plcp[/media]

 

[m16ty]

Smoke ain't nothing. The PO (91W350) took this video of my deuce smoking, and it HAS a turbo.
[media]http://www.youtube.com/watch?v=YwCqiuW__Ak&list=UU6KLw1yfYsHW8HnJyRXt87Q&index=17&feature=plcp[/media]

Do you have a pyro installed? Looks like the fuel is turned up a bunch.

 

[ratat98]

Nope no pyro. ...yet... the FDC was bypassed, and I don't think they turned down the fuel when they bypassed it like they are supposed to. A pyro is on the list, but it's never had any problems

 

[gimpyrobb]

A pyro is on the list, but it's never had any problems

Until you do, then they are BIG.

 

[ratat98]

Until you do, then they are BIG.

Yep! I'm not too worried about her though. I changed the head gaskets a few months ago and the pistons and turbo looked nice and pretty! Also the gasket change cut the smoke in half for whatever reason. I do believe its partially due to a couple bad injectors. That's also on the list.. I'm just easy on the go pedal until I get my list taken care of.

 

[Bcurtman]

OK then, what is the proper procedure for detuning after the FDC is bypassed? I did the bypass when I first got the truck. I'm easy on it too, but dont want to hurt it. Seems like there would be an rpm setting (I have the tach in the truck and a handheld), a temp setting, a screw it all the way in and back it out x turns setting, ...something...

 

[navyninja]

Ya know... Mine smokes like a freight train when I pull a hill, but when I'm just cruising it doesn't smoke at all. Except for a puff when I shift, and mine just had the turbo replaced.

 

[m16ty]

OK then, what is the proper procedure for detuning after the FDC is bypassed? I did the bypass when I first got the truck. I'm easy on it too, but dont want to hurt it. Seems like there would be an rpm setting (I have the tach in the truck and a handheld), a temp setting, a screw it all the way in and back it out x turns setting, ...something...

There is a standard number of turns but I don't recall it. What I'd do is just get a pyro and go from there. That's the only way to know for sure you're in the safe range while knowing you're getting all you can safely get out of the engine.

 

[gimpyrobb]

There is a standard number of turns but I don't recall it. What I'd do is just get a pyro and go from there. That's the only way to know for sure you're in the safe range while knowing you're getting all you can safely get out of the engine.

To add to that, the military didn't have "tuned" settings. They had a baseline and then added a turbo to clear up smoke. That was only to make the EPA happy, not for power.

Why would you not want to tune your motor for volumetric efficiency?