I gather malfunctioning egr systems cause a certain amount of smoking issues on these engines. mine has been 'blanked', that is, there are plates installed to restrict exhaust from entering the intake even if the controller wants there to be. The egr mechanism has been left in place, and I wonder what thickness of metal is doing the blanking. I'm also thinking about all this for my VW TDI, where it would also require a ECU 'tune'. But not in this case. Our ECU is more like a glow/egr control unit, since the fuel injection is mechanically governed.
This is my van cold starting
on an above freezing morning with a circulation type heater running for an hour or so. I'm too smokey for the city, that is for sure! It's smokes severely in the below freezing temps and I don't dare try in it's current condition. As you can see it only took 10min to stop smoking (FFward to 9min to save a bit of time I'd suggest).
I'm not a fan of the heater installation. It's in the bottom rad hose and concentrates heat around it without much circulation because of the short distance to the thermostat above it. So it works good with the engine hot (or I imagine with the t-stat removed) but I get coolant sweating out of the iffy looking hose (btw, does anyone have a line on a lower rad hose in Edmonton?) if plugged in for long. My preference would be the same sort of heater only made to ciruclate via heater hose.
I'm interested in getting wiring diagrams for the glow/egr controller circuitry, or 'ECU' and perhaps moving to a manual GP system while I attempt to resolve my van's issues. In other configurations, I've retrofitted a momentary-on, two-position toggle switch as relay controllers. One position (up) for full glow. Down for after-glow. I'm guessing that the lower voltage plugs on the delica system mean there is no need to interupt the alternator to protect them from over-voltage when running, in which case manual after-glow is made more simple on the delica. If this were a true cold climate diesel the dropping resistor would be an intake heater!