Yes its that time of the year again, I've asked it before,
the answers where to difficult for a techno ignoramus like
to understand, it seemed like it had went away so I didn't
bother with it anymore, but...

She's smoking like a semi truck from the 60's, even worse...
Engine is in normal operating temp, I punch it, it BARFS smoke,
I couldnt see the car behind me, I let go of the pedal it goes
away, I punch it again, it continiues to smoke all up to 80 MPH,
I think I laid down a smoke screen of about a 200 metres, which
is kinda cool, except the 1 MPG thing going on :help:

Hell it doesn't matter under any kind of acceleration, I got back
from the action hauling a 2500 pound trailer, nothing much, I feather
it and it still smokes (just less)...

What can I do...:help2:

Black Smoke = unburned/partialy burned fuel. Most common cause is lack of air, what are your boost pressures are various throttle applications and speeds?

Helmet,

You should check to make sure your turbocharger is working. Do you have a boost gauge and is it showing boost? The smoking on hard acceleration is indicitave of no boost. Check the vacuum connections between the pump, the solenoids mounted on the drivers side just above the valve cover and the wastegate actuator. If all the vacuum hoses are okay, try spraying WD40 into the wastegate solenoid to free it up incase it's sticking.

Sounds like your not getting boost. Could be either the vacuum pump or the wastegate solenoid.

Grab the wastgate arm on the turbo with the engine running but cool and try to move it. If it moves, then there's lack of vacuum and I'm on the right track. If it doesn't move, then I'm way off.

If I'm on the right track and the wastegate arm moved, then follow small plastic vacuum lines back from vacuum pump to solenoid near driver's side valve cover. With engine running, disconnect lines from the solenoid. Is there a little suction in the line coming from the vacuum pump? You should be able to feel it by putting your finger over the end of the line. If there's suction, your pump is working and your solenoid is shot. If there's no suction, then either your lines are leaking or the vacuum pump is shot.

Post back what you find. Search the site for wategate and solenoid. You'll turn up a lot of info.

Yes yes I know it has to do with boost and turbo, even I know that much ):h

And I'm giong to try what W_Huisman said, it sounds understandable:D

Thanks for the help!

BTW... Huisman... sounds Dutch...?

Oja don't have boost gauge BTW (don't have any gauges...)

BTW... Huisman... sounds Dutch...?Yup. Guilty as charged.;) That's why I can be such a tight-wad at times.:D

is your air filter plugged?

Could it be a timing issue? Just a thought.

Heavy Black smoke points directly to an air management problem, on a turbo charged model, that pretty much narrows it down to being a turbo related problem.

White smoke would indicate a timing issues.

White smoke would indicate a timing issues.
...or dumpin' fuel.

dumping fuel would make black smoke too. Both conditions mean the engine would be running way too rich, not enough air to burn all the fuel and the black carbon/soot would be the result.

If your dumping fuel because your injectors are not atomizing just 'pissin' in the combustion chamber, then yes, you would get white smoke, a knock and rough idle.

Now that's where I'm confused. (being new to the diesel game). I was told by, and please understand that this was from a guy driving a Dodge, that if it is running right and you put out black smoke after revving it and running it hard, and it is dumping black smoke, it is just unburned fuel and is not a bad thing if the truck is modded.
I was having white smoke for the longest time until I changed my lift pump and OPS and now I have virtually no smoke, even on a heavy acceleration(which finally does not hesitate anymore).
Please advise,
Mark

TDG,
That makes more sense. How much rough idle would you get if you had bad injectors?
How much shake/rough idle is normal for a 93 diesel?
Mark

Sounds like one of the vaccuum lines for the wastegate is either unhooked or broke.

I experienced a similar thing as you and it was because the brittle plastic vaccuum line cracked and couldnt hold the wastegate valve correctly.

Check to two lines. One comes from the lift pump to the back of the engine, drivers side to a little electric valve. From there it goes to the wastegate on the turbo.

Andrew,
Who was that reply to?????
Not sure what engine/vacuum problem you are speaking of..
Thanks,
Mark

...I was told that if it is running right and you put out black smoke after revving it and running it hard, and it is dumping black smoke, it is just unburned fuel and is not a bad thing if the truck is modded.If you 'modded' your truck, odds are you turned the fuel up, more fuel means unless you get equally more air to burn it, the excess will come out the tailpipe as black smoke. Because of the way the 6.5 ECMs are all programmed, black smoke when you hit the gas is expected. The ECM will go straight the max fuel output, and you will get black smoke until the turbo catches up and makes enough boost to burn the rest of the fuel completely.

I was having white smoke for the longest time until I changed my lift pump and OPS and now I have virtually no smoke, even on a heavy acceleration.The white smoke was due to timing, low supply pressure makes for low transfer pressure inside the pump, and you were probably drawing a little bit of air with an inop lift pump too, which will really make a late timing/low fuel quantity problem.

How much rough idle would you get if you had bad injectors? How much shake/rough idle is normal for a 93 diesel?It would be pretty rough, there are certainly other things that can cause it, but if your truck normally idles smooth, and begins to get a little rough and the injectors are getting close to or over the 80k mile mark, then they should be changed.
A 93, with a mechanical fuel pump will vary from truck to truck more so than the '94 electronic ones will because the ECM controls them more accurately. When the engine is fully warm, it should be fairly smooth, but in a 12 year old truck, a lot of things can go wrong, like, timing chains, injection pump, injectors, motor mounts, harmonic balancers, cylinder wear etc...

My reply was to the initial poster with the 97 Diesel.


Andrew,
Who was that reply to?????
Not sure what engine/vacuum problem you are speaking of..
Thanks,
Mark

My truck puts out alot of white smoke when first started for the day, and is really hard to start at that, but the white smoke quits and it doesn't smoke at all, but there is carbon spattered all over the axle and frame under truck, (exhaust is cut off 3 inches behind cat, muffler was bad and haven't replaced exhaust yet, waiting for crossover and downpipe), but when you first start it, the engine noise is really loud and the SES light is on, after it warms up a little, I shut it off and restart it and the engine noise quiets down and the SES light goes out? I have changed all filters and lift pump is working.

Dually--what kind of codes is she spit'n at cha?

LOL my thread got hijacked):h

Anyway started 'er up this mornig, and yes I could move the
arm (if I put my weight behind it;) )

I treid to follow the little black vac line, but I'm short on
time 'cause I have to go to school.

Will report back in the afternoon (eeeerrr... thats Holland
afternoon)

Sigh... where do I start?:rolleyes:

Well, like I told, I moved the arm next to the turbo, and it moved.
When school was over, I made an appointment with my dealer...

This is where it starts getting bad...:(
So I mentioned to him about the black smoke, and I proudly
proclaim that I managed to move the arm next to the turbo.

:badidea:
He was pissed.
He told me to NOT fiddle with the engine at all, and that moving
the arm might damage something...

Okay, some time ago I made a post about how I found some scrap
metal in the intake. He was also pissed about that, because I
should not have taken the upper intake of, and he thought the
scrap metal was there BECAUSE I took the intake off...
He also thought that the smoking started because of that piece
of metal.

But that happened BEFORE I took the upper intake off!
(you might suspect I'm getting a little frustrated when I
hear him say all of this)
So he blames it all on that time when I took the upper
intake off...

So we are debating this as we drive, him with a read
out computer on his lap...
And offcourse, it doesn't smoke... the only time I want it
too smoke it doesn't...:(

So I drive away, continuealy testing it with braking and gassing,
nothing happens...
Untill I go up the freeway, THEN it finally starts smoking
like hell in fire!

So I called him again, and he's going to test my truck
next week to see any errors...

50 bucks says when its 'fixed' its going to smoke again:(

Ahhh...

Sorry for the :rant:

I would bet that a wastegate solenoid for the few bucks it cost, under 25.00 I believe, would be a good start cause yours is doing what mine was doing worked great sometimes, I thought, and other times doggie and smokey. I did take mine apart, shhhh don't tell anyone, and clean it up and spray it down with WD-40, worked great after that but I replaced it any way cause I had bought the part and didn't need more trouble later. Just a thought

Wastegate sol - noted.

And WD-40, you used this as a gasket or something?
(if I'm wrong - techno ignoramus, remember;) )

Helmet... Do what bowtie says. Squirt a little wd-40 (or whatever spray can lubricant you have available to you on your side of the big pond) in the wastegate solenoid and see if your troubles go away.

You mechanic sounds like a really nice guy.

Wastegate sol - noted.

And WD-40, you used this as a gasket or something?
(if I'm wrong - techno ignoramus, remember;) )
Naw It's a spray lub. Auto parts stores and walmarts amoung other places to get it.

Alright-y , WD-40 and wastegate sol - I'm goin' shoppin':)

Huisman: ya think so? ):h

Bowtie: look at you're postcount:D

Whoa guys I think Helmet is in Netherland, he might not have same brands we have.

Helmet, do me a favor, next time you go to dealer if he gets pissed, run his a$$ with a lot of insults. He's trying to take advantage of you. There is no damage moving wastegate arm.
If I was there I can guarantee that guy wouln't look too pretty or wouldn't be working there anymore.
Just be firm and above his voice tell him to check truck without any comment.

Whoa guys I think Helmet is in Netherland, he might not have same brands we have


True, but I can order from internet right? (low on money right now, but these
two items don't sound to expensive)


Just be firm and above his voice tell him to check truck without any comment

Thanks for the advice Val, I did get into a discussion with him,
and he backed down, my dad gave me the advice to stay calm,
but that was real hard for me to do right then:mad:

The problem is, there just aren't many 6.5 TD's in Holland, and
the knoweldge about these engine's isn't that great either.
Thing is, my dealer is actually one of the few dealers in Holland
who works with these engine's... pretty bad situation huh?:(

I wish there were more techies like the fine people on this
board over here, it would save me alot of problems:o:

If you're going to buy a new wastegate solenoid, you won't need to buy WD-40. The WD-40 was just for squirting into your old wasegate solenoid to try and get it working again.

If you're going to buy a new wastegate solenoid, you won't need to buy WD-40. The WD-40 was just for squirting into your old wasegate solenoid to try and get it working again.


Aha thanks for clearing that up, first going to try the WD-40 then :)

Helmet,
Sorry for getting off track on ya. If I'm correct in thinking, your vac pump is on the pass side and the main thing that does not look like a normal item on the belt line with small black hoses coming off of it.
Mark

This is kind of an old thread.....but ill add pics to help.

The first picture is of your vacuum pump that should be directly below the air conditioning compressor. Off of this pump there should be a green/yellow plastic hose. If you follow this tube it will go under the 6.5L cover and crossover, behind the engine and connect to the waste gate solenoid valve (wgsv). THIS is the 25 dollar part that causes a lot of problems. This piece is circled in yellow.

From the wgsv, there is a black vacuum line that runs to the waste gate solenoid. The waste gate solenoid is circled in blue.

With the engine off pull the vacuum line off of the wastgate solenoid valve (circled in blue). Fire up the engine, and with it running, see if there is an vacuum on that line. If no, turn off engine, reattach vacuum line to waste gate solenoid and go upstream to the wgsv.

Pull the line off of the WGSV that is coming from the vacuum pump, then fire up the engine.


Possible results:

If no vacuum is present in the line from the vacuum pump then your fault is at the vacuum pump or is a broken vacuum line.

If vacuum is present at WGSV but not at WGSV's other nozzle, then fault is with the WGSV.

If vacuum is present at wastegate solenoid, try to move the arm with engine running. Arm should not move. If it does, the vacuum line from the WGSV to the waste gate solenoid is broken or the waste gate solenoid is malfunctioning.


Pushing my L65 to the floor only yeilds marginal smoke and that's pre turbo spool up....

If there IS vacuum being generated by the vacuum pump

My truck puts out alot of white smoke when first started for the day, and is really hard to start at that, but the white smoke quits and it doesn't smoke at all, but there is carbon spattered all over the axle and frame under truck, (exhaust is cut off 3 inches behind cat, muffler was bad and haven't replaced exhaust yet, waiting for crossover and downpipe), but when you first start it, the engine noise is really loud and the SES light is on, after it warms up a little, I shut it off and restart it and the engine noise quiets down and the SES light goes out? I have changed all filters and lift pump is working.
I know you made this post a few days ago so I will PM you too on this. Sounds like you would definitely benefit from a new set of glow plugs!! Should make a lot of your problems, like all that you mention, go away. Hope this helps.

Good pictures Yota. What kind of camera are you using?

Yeah those are nice pics. My old lady has been nagging me about getting a camera.

Im using a FujiFilm FinePix S7000, and I love it a LOT!! Thanks for the compliments. :D

In responce to bumpin' yota's first post:

First of all, now I finally know where the vacuum pump is located):h

Second, can't find the wgsv:( (although I did a quick scan this morning before going to school, I'll take another peek when the engine is cooler)

Also, my truck has the S engine, so that's 3 solenoids, I think the
front one is for the waste gate, right?

Anyway, thanks for the pics!

Hello helmet,

I live in Holland also, (in schoonebeek) and i have a chevy NOVA where i put a 6.5 diesel/4L80 combo in, were do you live in holland and what dealer do you have?
I had ferry good help from a dealer in Assen (the north of Holland) it is De Vries Ambulance, theay have lots of experians (good and bad) with the 6.5 diesel, so theay no thear job and are fear.

greating

Arjan from Schoonebeek city:ro)