Fuel control question. 2H diesel.

[drifter]

I'm not yet conversant with diesels so I thought I'd ask.

I'll explain the situation then I have a question.

On this HJ47 Troopy I recently bought, the EDIC is not working, so it has a rod with a knob on it, connected to the fuel control lever on the injector pump where the rod from the EDIC should go. This makeshift rod comes through the firewall to just under the edge of the dash, so when you want to shut the engine down, you turn the key off, reach down & push this rod forwards.

Having a look at the control lever on the injector pump I found it is spring loaded & appears to rest in the "overinjection" position. The vehicle is blowing a reasonable amount of black smoke when under load, such as when I have my foot down going up hills etc, so I presume that's all it is. Overfuelling. Doesn't appear to blow any smoke at all when cruising or at idle.

I replaced the very dirty air filter yesterday with a new one & that reduced the amount of black smoke, so I think I'm on the right track. Went to Toyota today & as expected you can not buy a new EDIC. They wanted $120 just for the proper rod between the EDIC & Injector pump lever, so forget that.

I was thinking of making up a bracket with an L shaped slide bar which would connect to the existing makeshift control rod. It would have grooves in it as shown below for the "start", "run" & "stop" positions.

Now for my question. Is it correct that the "RUN" position is basically anywhere in the centre of the control levers' movement between the "START" & "STOP" positions.

Here's what I'm thinking of making.
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[Shadow]

Have a look at the arm on the injector pump again, forward is stop, against the adjusting screw plunger is run, and then if you pull it back further, a plunger in the end oif the fuel setting screw goes in, this is start or overfuel position.

so you have two springs, one holding it against the plunger, and another inside the plunger stoping it from moving into the overfuel position, unless the edic, or you in this case, applies exta pressure to push it into the overfuel position.

If yours is truly resting in the overfuel position you should look for a new adjusting screw with a functioning plunger.

[drifter]

Thanks shadow. I've had another look at it, & I see what you mean. I just wasn't pushing back on the lever hard enough to push the plunger in.

Right, so that means it's in the "run" as it should be.

Now just have to see what else I can do to lessen the smoke.

Thanks mate.

[Shadow]

they really shouldnt need adjusting, my 2H did 420thousand and never had any adjustments done to the fuel settings and it never blew any black smoke at all.

It did use redex injector treatment all its life though.

If it is blowing smoke, and you or someone else hasnt played with the fuel setting, then its likely a problem with your injectors (poor spray pattern or leaking) or the pump.

[drifter]

I've only had it a few weeks & have not done any adjustments to anything on it.

But I have no idea what the previous owner or his mechanic touched. I'll probably just take it to our local workshop in town for them to check it over. I don't mind spending a bit on it to make sure everything is right, as it didn't cost me a great deal to start with.

There can't be much wrong with it though, as it goes really well, gets about 11L/100kms (4 speed gearbox), has plenty of low down grunt, easily holds 100 kph on the highway & pulls like a train up hills (except for blowing the black smoke that is). I don't really know how much smoke is too much when it does blow it powering up steepish hills, that's my problem. It's not enough to be able to see it out the windows, only if I have the passenger side mirror adjusted so I can see the end of the exhaust pipe.

[Dyna Beast]

A manual pull stop ain`t such a bad thing.Good for river crossing`s.One more thing that is`nt electricaly operated.My truck has a old H diesel with a cable set up.There is a over injection knob and a pull stop knob.Works ok.Just got to rember things are a bit more hands on when starting and stopping is all.
Cheers