Update on problem.

[Island Moose]

Hey guys,
Well, I got a call from the mechanic...good news and bad news...

The mechanic was able to stop the smoking and clear the exhaust up completely by dialing back what I'll call the "fuel enricher" screw on the pump. This also brought the idle down to about 1000rpm, as low as it would go even with the adjuster all the way back.

Problem is, at this setting, the engine has no power...I mean it will barely make it to 80km/hr . It's smooth enough, but you can mash the pedal to the floor and nothing happens. Screwing the enricher screw back will bring all the power back, but the white smoke also comes back with a vengence, along with a high idle.

He has never seen a diesel engine with a butterfly valve on the intake manifold, so it's obvious he's no Toyota expert, but he is very certain that the problem is with the pump...either a physical problem with it, or that it's wildly out of time with the engine/crankshaft.

I guess I should be thankful that the ol' girl is back in my driveway, and the whole episode has cost me less than $270 CDN so far.

He agrees with GregB in that I should sit on it until I have the proper manual/documentation that gives the exact settings and procedures for checking that timing. He also says the pump itself may need a rebuild. In that event, I may elect to find myself an inline pump and be done with this whole mystery.

So that's where I am at the moment.

 

[crushers]

take a pic of the pump from the top, some of these have a altitude (crap, i can't remember the proper term, my mind is elsewhere) ??compensator?? it is different from the ones on the inline pump and if that is the case then you will get over fueling at sea level...

 

[lowenbrau]

Wayne, you're thinking of the HAC. High Altitude Compensator

The symptoms are identical to when the govener diapragm goes in an inline pump. You can dial the idle screw back but it doesn't solve the problem. I think this mechanic has missed the mark. I'd replace a small length of fuel hose with a clear piece and look for air in the system. I'm sure it's happening somewhere.

I still suspect the scavenger lines.

 

[Island Moose]

Wayne, here it is....

 

[crushers]

nope your pump doesn't have one...

 

[lowenbrau]

Do me a favor and try a little test...

Remove the fuel scavenger hose to eliminate the possibility of any air entering there.

 

[Island Moose]

OK, it's the hose to the left of that one though, the one with the green lettering. What if I hook up my vacuum pump to the scavenge hose and look for leaks? Otherwise I have to get it smoking again to see if the disconnect fixes the problem.

 

[cruiser_guy]

OK, it's the hose to the left of that one though, the one with the green lettering. What if I hook up my vacuum pump to the scavenge hose and look for leaks? Otherwise I have to get it smoking again to see if the disconnect fixes the problem.

It's the hose that comes back from the injectors, which ever one that is. You could try with a vacuum pump but I don't know exactly how the injectors or pump will deal with a vacuum. You'll want to plug the line that returns to the injection pump and allow the excess fuel from the injectors to flow to a bucket.

When you get the manual check the position of the bellcrank connected to the rod from the EDIC motor. It has three positions. Off, Normal and Over-Injection for starting. If it does not return from the overinjection position you could be getting too much fuel thus keeping the idle too high.

 

[roscoFJ73]

Moose,Is this a denso unit made under lic from Bosch?
Every time I put into Google" VE fuel injection pump " I get lots of Bosch stuff.

Does it have a model number ect?

Bosch sell a range of manuals for VE rotary pumps at about $35 each or $120 for the encylopedia.

There is about 15 car makers using similar types of this pump although I understand you need cruiser specific stuff.

Proper documentation is a good idea

Not sure how common Dyna trucks are in your area,but they seem to have used them till 97 with an electronic gadget fitted to the rotary pump.

 

[waaz]

Over fueling when warm or engine temp will cause black smoke not white smoke. you may have a blown head gasket or cracked head. That could be the prob. Even if engine is out of time if it is at engine operating temp you should get no white smoke just lots of black smoke.
waaz

 

[lowenbrau]

OK, it's the hose to the left of that one though, the one with the green lettering. What if I hook up my vacuum pump to the scavenge hose and look for leaks? Otherwise I have to get it smoking again to see if the disconnect fixes the problem.

Are you sure? Seems like the medium sized one on the left would be the return to tank. I fear you have a leak in the tiny line that runs from injector to injector and back to the pump. It should be a small (like a brakeline) line.

 

[Island Moose]

Are you sure? Seems like the medium sized one on the left would be the return to tank. I fear you have a leak in the tiny line that runs from injector to injector and back to the pump. It should be a small (like a brakeline) line.

Yes, that vertical 1/4 inch line leads to the scavenger pipe that connects across all four injectors. The large hose on the right leads back to the tank. The large hose at the bottom of the picture comes from the filter and the tank.

When I pulled it all apart, I cleaned that brass line that connects the injectors, but as you say I will test it today for leaks, perhaps using soapy water and compressed air through that 1/4 line.

BTW Waaz, it's definetly not steam or coolant in the cylinders. It's 100% fuel smoke. It's not black because the engine isn't under load, it's just idling. The mechanic at the Hino dealer checked my compression in all 4 and found them to spec.

As soon as I get ahold of a manual, I'll have this problem licked...but for now it's like learning how to fly a plane without an instructor.