What´s wrong- NO it´s not the obvious! Smokes like hell!

derjackistweg

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Step by step it goes forward and back again! ;-) Trans working now - but the exchanged engine does not run right. It was exchanged because the old engine smoked (oil).

So this is what the new one puts out ...
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Any one an idea what to look for? Done so far:
  • Injectors redone
  • Glowplugs and Relais do work
  • Engine starts with the third try @ 0 degrees Celsius, after weeks
  • Engine has good power. Truck drives easy 110km/h ~ 70mph
  • after some ~ 3 min all 8 cylinders (guess) are running
  • after ~ 10 min smoke is way less but still noticeable
  • Smoke @ beginning more white than blue and not black
  • after ~ 10 min smoke is getting darker and less
  • Smokes doesn´t smell very oily

My guess is timing.
 
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ISPKI

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It looks like its releasing alot of unburnt diesel. My truck almost smokes like that on first start up after sitting overnight in cold temps but cleans up after warming up for 5-10 minutes. Maybe one cylinder isnt creating the compresdion that it needs.
 

derjackistweg

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It's not an compression issue -thank God!
You must be registered for see images attach

This is the compression on ALL cylinders!

Injectors are redone by a very trustworthy company in my home town.
 

CDX825

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I was going to say timing is retarded but the way that thing sounds you have some bigger issue. I agree you might have an injector issue or even a pump issue.
 

jrad235

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Definitely pull the pump and injectors. I would almost suspect water in one of the lines or a bad pump or injector. Either way, those injectors should be tested and a different pump installed.
 

riphip

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Sounds like mine when timing was too far advanced. Did the motor come with IP on it or did you have to install one?
May have missed a tooth on the gear. Try turning pump a hair towards passenger side and see if it cranks easier.
 

riotwarrior

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I too hear a miss...however I am wondering if its a sticky or worn valve...thus not firing right when running vs cranking for comp test.
 

derjackistweg

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the first video was just after a cold start.

Cylinders are all running after some minutes.
Pump can be an issue.
Injectors possibly not. They have been done to specifications. I don't think the company did A bad job. Worse than original, not to be expected. This company does nothing else than diesel.
 

Macrobb

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Injectors possibly not. They have been done to specifications. I don't think the company did A bad job. Worse than original, not to be expected. This company does nothing else than diesel.
Who?

A miss like this is /either/ injectors or valve train. It's /not/ the IP(it would either not start, or have the same issue across /all/ cylinders).

First, check your glow plugs. If all the glow plugs are good, and the same manufacturer, you can do a resistance test to check for cylinder balance.

Effectively, once your engine is running, you measure the resistance of each glow plug(plug terminal to ground). Record each measurement and take the average number.

Numbers higher than average are burning hotter, numbers lower are burning colder. Chances are that they will all be in a relatively tight range, except for 1 or 2.

You can then take the highest and lowest numbers, swap the injectors on both. If the resistance numbers 'follow' the injectors, you know it's the injector. If it stays, it's valve train.

That being said... it /sounds/ like injectors to me. Valve train issues are usually accompanied by a thumping noise of some sort.
 

Hydro-idi

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Always a good idea to go back to the basics.
What causes a miss and smoke? Well if your not losing any coolant or seeing bubbles in overflow tank, injectors are first to point the finger at. Second would likely be the injection pump.
This is assuming that your fuel system isnt contaminated & air tight.
I still think it's probably the injectors. Just because so n so rebuilt them and does quality work doesn't mean one or two have malfunctioned. I would at least pull them out and get them pop tested.
 

icanfixall

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You have a bad injector or a bad valve. But you say the injectors are newly repaired and installed... Then remove the valve covers and see if a spring or valve is bad.
Did you install the injection pump and if yes..How did you install it...Did you hear this engine run before you purchased it. If not someone might have messed it up.
 

derjackistweg

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When you see and hear the exhaust it was right after start and for sure not all cylinders running. Though this is but the major concern because after 5 min in these cold conditions all cylinders are running smooth.

http://www.umbscheiden.de/content/service-dieselpumpen.html did my injectors. These have come out of the old, same engine. Btw the old engine did not smoke like that. It did smoke - bud due to probably piston ring failure. Oily and totally different, nothing similar to this.

I was told that this engine should be running good. At least it has very good compression. So failure must be outside the stroke.

Timing is nut checked, though I don't know it could be wrong? I have seen a video how this is done, looks complicated. Has anyone a good source for a how-to. And what will tools cost me?

If it's nut Timing I would like to check the IP. Fuel is coming but I have not checked more that that. Fuel is new and filter also. I could change to the old one probably.


What is ment above by “valve train“? If there would be failure I wouldn't have full compression.
 

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