Surging and smoking

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Had the truck plugged in last night. Started up sans smoke show. :) Let warm up a bit.

Tested pump. Took 4.5 pumps before it got hard to pump.

Drove to work fairly slowly (~2km). Same old surging & lingering bluish smoke (not billowing clouds like before). Ran webasto... seemed a little better with it on.
 
Adam, i am no pro but thought you might have missed the 'rotory' pump part of the message...
 
Ratpuke said:
Had the truck plugged in last night. Started up sans smoke show. :) Let warm up a bit.

Tested pump. Took 4.5 pumps before it got hard to pump.

Drove to work fairly slowly (~2km). Same old surging & lingering bluish smoke (not billowing clouds like before). Ran webasto... seemed a little better with it on.
Click to expand...


so your starting up with out the smoke, then it is two seperate problems. Don't assosiate the smoke with the surge.


To me you definately have an air leak. your going to have to check all the lines. and fittings.

Have you done injectors recently? do you have history of them being serviced? if you do not, I would pull them and get them tested, as well on install use all new gaskets. This is a service we need to do anyhow. It might help elminate something here.

Also yoyu might have to install the clear hose to see the bubbles.
 
crushers said:
Adam, i am no pro but thought you might have missed the 'rotory' pump part of the message...
Click to expand...

Ya got that right, I don't even know what it is. But that is for another discussion.....sorry for the hijack....I always like learning new things...

Adam
 
Is this engine still sick? What's happening?

Peter Straub
 
lowenbrau said:
I'm going to make a housecall next weekend.
Click to expand...

I though it was a booty call.
 
Lowenbrau's momma may be lurking. ;)
 
So, a bit of an update.

It has been cold here the last few days. I've started Mr. G and let him idle for a few minutes before I head out.

I pull out of the driveway and only make it past 3 houses before the engine starts shuttering (as though it's about to stall), has no power and won't move. I pulled over to the curb and dial up the hand throttle, sit there for a few more minutes and then we're off again... no problems except for the usual occasional surge.

Oil pressure is fine. Engine is cold.

I have to get this sorted out before winter. We've looked for air leaks but didn't find anything. The truck has run fine all summer...


Brownbear, I'm gonna follow your advice first.
 
edit: Have you gone through a tank of fuel yet? Might just be some water in ze fuel...

Disclaimer - I don't know much about the Toyota rotary pumps, but all rotary pumps that looks like a Bosch VE appear to be built internally like a VE, so I think it might be a safe bet to assume that there might be some common ground.

My Bosch rotary pumps (whether they be Volkswagen, Cummins or Land-Rover apps) behave like you are describing when they are on their way out. The lumpy idle is usually caused by the flyweights in the pump's governor being sticky. It usually starts as a bit of an occasional lope and gets worse until the engine will surge and come close to stalling, and then re-fuel abruptly and spin up/surge. On my VWs it was barely noticeable. On the 6BT it makes little puffs of smoke. The other problem is that the Bosch pumps use internal fuel pressure to set injection timing. They have a draw pump that sucks fuel into the pump and this pressure has an effect over injection time. When the draw pump gets worn it can lead to erratic engine time that is dependent on temperature as the pump is less efficient when cold.

Thia is a shot in the dark. I've never seen a Toyota rotary pump, except for once, and I have never seen an exploded diagram. However, due to the recent changes in fuel chemistry and problems associated with ULSD and rotary pumps, I think it is something to consider. BTW - The Bosch pumps will sometimes go forever with a cold-start idle fluctuation, it doesn't seem to affect much. My Cummins eventually got to the point where it was really, really annoying, but the engine ran great under load. Good luck.

BTW - My brother is in Inuvik and drives the Dempster every once in a while. I will tell him to keep an eye out for all these cruisers!!
 
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Fromage said:
edit:

My Bosch rotary pumps (whether they be Volkswagen, Cummins or Land-Rover apps) behave like you are describing when they are on their way out. The lumpy idle is usually caused by the flyweights in the pump's governor being sticky. It usually starts as a bit of an occasional lope and gets worse until the engine will surge and come close to stalling, and then re-fuel abruptly and spin up/surge.
Click to expand...

Replaced the rotary pump and so far (knock on wood) all complaints about surging and smoking behaviour have dissipated. https://forum.ih8mud.com/diesel-tech-24-volts-systems/234642-pos-rotary-pump-3b.html
:bounce:
 
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