puff the magic troopy (white smoke)

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bull

bull

10 Year 15 Year 20 Year OG
Joined
Feb 7, 2002
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269
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3,148
Location
Pendleton Oregon
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www.oregongrain.com
I have owned a 2H for a total of 30 days now, since said ownership we have gotten some white smoke upon start up and has progressively gotten worse since switching to b100. It doesn't smoke at all once it is warm. I have read probably almost every thread on white smoke, but still confused a little bit. So here is my check list of things that could cause it.

engine details

10/82 2H with 73,000 miles on it.
B100 diesel

here is what I'm going to check in this order.

1. fuel filter
2. glow plug resistance
3. glow plugs
4. injector leak
5. injectors themselves
6. diaphragm??


Am I missing anything else to check?
 
bull said:
I have owned a 2H for a total of 30 days now, since said ownership we have gotten some white smoke upon start up and has progressively gotten worse since switching to b100. It doesn't smoke at all once it is warm. I have read probably almost every thread on white smoke, but still confused a little bit. So here is my check list of things that could cause it.

engine details

10/82 2H with 73,000 miles on it.
B100 diesel

here is what I'm going to check in this order.

1. fuel filter
2. glow plug resistance
3. glow plugs
4. injector leak
5. injectors themselves
6. diaphragm??


Am I missing anything else to check?
Click to expand...

I think you got it covered.
1) just change it. I change mine at every oil change.
2 and 3) change them too. even if the engine has low mileage, they are old. and while changing them, clean the bar that connects them.
4) you'd know if there was fuel dripping down, and if they sucked in air it wouldn't run well, sp probably no leaks
5) expensive, but almost guarnateed to improve the running conditions of a 25 year old truck. still ahve to do mine :(
6) probably fine. if it was ripped, your idle would creep up. a PITA to change, but very doable.

cheers,
jan
 
How's the MPG? I had the same problem on mine and replaced the injectors. White smoke dramatically decreased but did not entirely go away. Mileage went from about 17mpg up to about 24 or so on this last trip (and that was with 2 kayaks strapped to the roof).
 
Jan-78FJ40 said:
I think you got it covered.
1) just change it. I change mine at every oil change.
2 and 3) change them too. even if the engine has low mileage, they are old. and while changing them, clean the bar that connects them.
4) you'd know if there was fuel dripping down, and if they sucked in air it wouldn't run well, sp probably no leaks
5) expensive, but almost guarnateed to improve the running conditions of a 25 year old truck. still ahve to do mine :(
6) probably fine. if it was ripped, your idle would creep up. a PITA to change, but very doable.

cheers,
jan
Click to expand...

warfin said:
How's the MPG? I had the same problem on mine and replaced the injectors. White smoke dramatically decreased but did not entirely go away. Mileage went from about 17mpg up to about 24 or so on this last trip (and that was with 2 kayaks strapped to the roof).
Click to expand...


I will get some MPG numbers next time I fill it up. Could it be a clogged fuel filter? The previous owner never ran bio in it..we just switched over and about a tank and a half later is when the white smoke worsened?
 
I think the bio is going to start harder anyhow. So normal if it smokes a little more on bio.

The smoke you describe does not sound out of the ordinary. They will puff a little on start up.

Longer glows, good plugs, will reduce the smoke effect.

I found I used to smoke on start up till I went manual control on the plugs and let it glow longer.

All of the mentioned items above are good things to do. Plan on re-doing the injectors in the future. Also change the fuel filter quite often now that you are running bio. It will free things up.

Also there is a screen in the start of the fuel pump that may need cleaning. It is a mesh screen. I have not pulled mine yet. Might be good to get some new gaskets before you pull it. its in the inlet line for the fuel right at the hand pump.
 
brownbear said:
I think the bio is going to start harder anyhow. So normal if it smokes a little more on bio.

The smoke you describe does not sound out of the ordinary. They will puff a little on start up.

Longer glows, good plugs, will reduce the smoke effect.

I.
Click to expand...

x2 The glow system was designed for normal diesel. All diesel get a 1-2 second blast of whitish smoke on start up due the combustion chamber being relatively cool.

Does it fire on all cyl simutaneously
 
brownbear said:
I think the bio is going to start harder anyhow. So normal if it smokes a little more on bio.

The smoke you describe does not sound out of the ordinary. They will puff a little on start up.

Longer glows, good plugs, will reduce the smoke effect.

I found I used to smoke on start up till I went manual control on the plugs and let it glow longer.

All of the mentioned items above are good things to do. Plan on re-doing the injectors in the future. Also change the fuel filter quite often now that you are running bio. It will free things up.

Also there is a screen in the start of the fuel pump that may need cleaning. It is a mesh screen. I have not pulled mine yet. Might be good to get some new gaskets before you pull it. its in the inlet line for the fuel right at the hand pump.
Click to expand...

roscoFJ73 said:
x2 The glow system was designed for normal diesel. All diesel get a 1-2 second blast of whitish smoke on start up due the combustion chamber being relatively cool.

Does it fire on all cyl simutaneously
Click to expand...


This is quite a lot of smoke...Like James Bond 007 lose the bad guys smoke screen. I'm going to go through the maintenance pieces noted above 1 at a time till it gets better.


How does a flaming diesel newbie tell if it is firing on all cyl simutaneously?
 
bull said:
How does a flaming diesel newbie tell if it is firing on all cyl simutaneously?
Click to expand...

Well it kinda starts on 2-3 cylinders...runs rough then the 4th kicks in......but your a 6 cylinder so you would get 4-5 running then it finally knocks about and 6 are going smooth.

Ever have a snowmobile and have a cylinder stop firing?

Basically if your glowplugs are not all working it will still start. But rough and with lots of smoke. Once all the cylinders are combusting then the smoke goes away.

Glow plugs are your number 1 item to cause smoke on start up. Or that is the lack of one or two.

You can pull the bus bar off between the glow plugs and take your meter and ring it out to find out the resistance of the plugs.

At 20 degrees C (70 f) the resistance should about 2 ohms. If it is inf or no continuity your plug is shot. Less is ok, but not 0 as it will blow your fusible links.

Also ensure you have voltage at your busbar when the glowplugs are energized.
 
bull said:
How does a flaming diesel newbie tell if it is firing on all cyl simutaneously?
Click to expand...

You would know:D Its the most god awful sound a diesel can make:D
 
i replaced my motor(3B) with a freshser one 90,000kms on it and had the white smoke + high idle problem. Wanyne knew right off the bat what was wrong and so i had the diaphram replaced. but i think the motor was sitting for quite a long time (2 years) and this caused the diaphram to dry out and crack. Different motor but could be similar situation. Although i think the diaphram was very cracked becasue it was a lot of smoke and very noticable high idle.
 
Bull,
I have run ford / dodge diesels and as stated above my call would be the glow plugs. You may be a diesel newbe but have been around motors. when you start it pay attention to the vibration more then the sound and you will notice that it smooths out quite a bit as it warms up. Good sign that it had some cold cylinders. In a short while you will wonder why we all have to put up with the gassers. 12HT in my sixity soon I hope. PS. That is a sweet ride. Are you planning on brewing your own bio?

Jim
 
You mention that the smoke disappears when hot. Does the white smoke reappear after letting the motor idle for a while or drive in slow-moving traffic ie cool down from operating temperature? Cold-combustion will cause this. Also, check injection timing at a reputable diesel workshop.
 
cody c said:
i replaced my motor(3B) with a freshser one 90,000kms on it and had the white smoke + high idle problem. Wanyne knew right off the bat what was wrong and so i had the diaphram replaced. but i think the motor was sitting for quite a long time (2 years) and this caused the diaphram to dry out and crack. Different motor but could be similar situation. Although i think the diaphram was very cracked becasue it was a lot of smoke and very noticable high idle.
Click to expand...

There is a oil you can get for the diaphagm .Neatsfoot oil I think.
 
AATLAS1X said:
Mechanical or electrical injectors?
Click to expand...

Mechanical...

daboheme said:
You mention that the smoke disappears when hot. Does the white smoke reappear after letting the motor idle for a while or drive in slow-moving traffic ie cool down from operating temperature? Cold-combustion will cause this. Also, check injection timing at a reputable diesel workshop.
Click to expand...

No smoke once it has warmed up..and no smoke after a long idle. I plan doing the timing once I get the wear parts checked.

roscoFJ73 said:
There is a oil you can get for the diaphagm .Neatsfoot oil I think.
Click to expand...

I will see if I can find it here in the states
 
The diaphragm I believe can be tested with a vacuum gauge(mity vac) hand held unit. To see if it holds.

I have not tried this. But if you have this tool give it a go. I bought one of these for working on my Mercedes vacuum issues. Only 60 bucks. Yah I know a diaphragm is cheaper. So I would not buy on of these just for this test....but if you have one already.
 
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