I've understood from diesel guru's there are three smoke colors to be aware of with a diesel: White, Blue and Black. Blue in a gasser is an easy spot, however I have always had trouble telling the difference between blue and white on a cold diesel.
The typical 3B cough when cold results in a bluey/white puff out the tail pipe which makes sense (cylinder compression not igniting the fuel), This "cough" goes away away with use of the momentary glow switch, until the cylinder/piston is warm enough that compression does it on it's own. When it is not coughing, however still not warm there is still a light bluey/white haze, which reduces as the engine goes to operating tempurature and start to compression burn nicely.
This same 3B loves belching black when under heavy load at altitude. This also makes sense; over fuelling or not enough O2, depending on which side of the fence you sit. Black in this instance is not supposed to be good, and this is where I have been learning the habit of driving to the mirror (as little black smoke coming out as possible on the long hills in the mountains, at elevation). Apparently if one had a pyro gauge hooked up, the exhaust gas temperatures in a N/A 3B belching black up a long grind on a highway would cause heart palpitations...
So, I take the above to mean that diesel exhaust color is an indicator of the completeness of combustion. The color indicates if the engine is cold, warm or hot.
Perhaps incomplete combustion in non-electronic Toyota diesels (whether O2/over fuelling, or tempurature induced) could be summed up this way?
Cold = White (or blue to the color challenged like me)
Warm = Whitey/Blue/Black depending on load and amount of fuel delivered
Hot = Black
I say color challenged because my 100,000km 13BT burns what looks to me to be blue till operating temperature, and then black after that. Blue is supposed to mean oil burning (isn't that what diesels burn??) however when I changed my oil at 6000kms (odo read 5000 but I forgot to take into account 20% due to the 35x10.5R16's) the oil level had not budged from my first oil change with this truck.
Fuj, hook your glows up to a momentary switch. Being summer, and a higher compression engine then a 3B I would be suprised if you need to glow at all. If it does cough use the momentary and give it a 5-10 seconds or so (probably when the cough will go away). I have to glow my BJ42 even in the dead of summer, for the first start of the day. After that, I do not touch the glow system all day. In the winter I have to glow it every time, and I have learned to cylce the system (manual switch) on those cold days.
(edit) Oh, and Fuj, there is not reason you can not go with another glowplug if you want. I do not recall the plug number used on your 1HZ, however the 3B's have either a 24V-20.3V plug for the older manual glow systems, or a 24V-14V for the new "superglow" systems. The 24V-14V would be more fragile (though faster response) if used on a manual system.
With the BJ74 13BT direct injection engine all I have to do is touch the starter, though I do have to use the idle up (in cab throttle knob) everytime I start it to smooth out the idle. This seems to be consistant with every 13BT I have seen.
Regards
gb
The typical 3B cough when cold results in a bluey/white puff out the tail pipe which makes sense (cylinder compression not igniting the fuel), This "cough" goes away away with use of the momentary glow switch, until the cylinder/piston is warm enough that compression does it on it's own. When it is not coughing, however still not warm there is still a light bluey/white haze, which reduces as the engine goes to operating tempurature and start to compression burn nicely.
This same 3B loves belching black when under heavy load at altitude. This also makes sense; over fuelling or not enough O2, depending on which side of the fence you sit. Black in this instance is not supposed to be good, and this is where I have been learning the habit of driving to the mirror (as little black smoke coming out as possible on the long hills in the mountains, at elevation). Apparently if one had a pyro gauge hooked up, the exhaust gas temperatures in a N/A 3B belching black up a long grind on a highway would cause heart palpitations...
So, I take the above to mean that diesel exhaust color is an indicator of the completeness of combustion. The color indicates if the engine is cold, warm or hot.
Perhaps incomplete combustion in non-electronic Toyota diesels (whether O2/over fuelling, or tempurature induced) could be summed up this way?
Cold = White (or blue to the color challenged like me)
Warm = Whitey/Blue/Black depending on load and amount of fuel delivered
Hot = Black
I say color challenged because my 100,000km 13BT burns what looks to me to be blue till operating temperature, and then black after that. Blue is supposed to mean oil burning (isn't that what diesels burn??) however when I changed my oil at 6000kms (odo read 5000 but I forgot to take into account 20% due to the 35x10.5R16's) the oil level had not budged from my first oil change with this truck.
Fuj, hook your glows up to a momentary switch. Being summer, and a higher compression engine then a 3B I would be suprised if you need to glow at all. If it does cough use the momentary and give it a 5-10 seconds or so (probably when the cough will go away). I have to glow my BJ42 even in the dead of summer, for the first start of the day. After that, I do not touch the glow system all day. In the winter I have to glow it every time, and I have learned to cylce the system (manual switch) on those cold days.
(edit) Oh, and Fuj, there is not reason you can not go with another glowplug if you want. I do not recall the plug number used on your 1HZ, however the 3B's have either a 24V-20.3V plug for the older manual glow systems, or a 24V-14V for the new "superglow" systems. The 24V-14V would be more fragile (though faster response) if used on a manual system.
With the BJ74 13BT direct injection engine all I have to do is touch the starter, though I do have to use the idle up (in cab throttle knob) everytime I start it to smooth out the idle. This seems to be consistant with every 13BT I have seen.
Regards
gb
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Only ever use an Additive when Alpine/Winter Diesel is'nt availible. 
Taken from Shell Canada's website:
