Design issue
- Thread starter ToadHill
- Start date
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JerryG
Super Member
<font color="blue"> Don't turbos require more warming and cool down than other engines? I would think they would smoke for a little longer on start up than others, and that has been what I've seen on turbos, but I've never owned one.</font>
The warm-up isn't a problem, but the cool down is. With the turbo running at such high RPMs, it creates a lot of heat. If the turbo isn’t cooled down the oil literally cooks on the bearing.
There are several different reasons why an engine will smoke. If it has a turbo seal out, valve seals bad, bad or broken rings, non-seated rings, restricted return fuel, injector problem or fuel pump problem are a few of the reasons that will cause smoking. I just wonder is the fuel return lines have been check to see if there is a restriction. A restriction in the return will cause smoking. At idle there is a lot of fuel returned.
As far as the glow plug, I think that you are right that it has to be a short. I would check anything that is plugged into the wiring harness. I am having a mental block today, but there is a solenoid, diode or something that is attached to that harness. I would check or change it. It appears that would be the only thing left from the list of things that have been changed.
The warm-up isn't a problem, but the cool down is. With the turbo running at such high RPMs, it creates a lot of heat. If the turbo isn’t cooled down the oil literally cooks on the bearing.
There are several different reasons why an engine will smoke. If it has a turbo seal out, valve seals bad, bad or broken rings, non-seated rings, restricted return fuel, injector problem or fuel pump problem are a few of the reasons that will cause smoking. I just wonder is the fuel return lines have been check to see if there is a restriction. A restriction in the return will cause smoking. At idle there is a lot of fuel returned.
As far as the glow plug, I think that you are right that it has to be a short. I would check anything that is plugged into the wiring harness. I am having a mental block today, but there is a solenoid, diode or something that is attached to that harness. I would check or change it. It appears that would be the only thing left from the list of things that have been changed.
JerryG
Super Member
<font color="blue"> Don't turbos require more warming and cool down than other engines? I would think they would smoke for a little longer on start up than others, and that has been what I've seen on turbos, but I've never owned one.</font>
The warm-up isn't a problem, but the cool down is. With the turbo running at such high RPMs, it creates a lot of heat. If the turbo isn’t cooled down the oil literally cooks on the bearing.
There are several different reasons why an engine will smoke. If it has a turbo seal out, valve seals bad, bad or broken rings, non-seated rings, restricted return fuel, injector problem or fuel pump problem are a few of the reasons that will cause smoking. I just wonder is the fuel return lines have been check to see if there is a restriction. A restriction in the return will cause smoking. At idle there is a lot of fuel returned.
As far as the glow plug, I think that you are right that it has to be a short. I would check anything that is plugged into the wiring harness. I am having a mental block today, but there is a solenoid, diode or something that is attached to that harness. I would check or change it. It appears that would be the only thing left from the list of things that have been changed.
The warm-up isn't a problem, but the cool down is. With the turbo running at such high RPMs, it creates a lot of heat. If the turbo isn’t cooled down the oil literally cooks on the bearing.
There are several different reasons why an engine will smoke. If it has a turbo seal out, valve seals bad, bad or broken rings, non-seated rings, restricted return fuel, injector problem or fuel pump problem are a few of the reasons that will cause smoking. I just wonder is the fuel return lines have been check to see if there is a restriction. A restriction in the return will cause smoking. At idle there is a lot of fuel returned.
As far as the glow plug, I think that you are right that it has to be a short. I would check anything that is plugged into the wiring harness. I am having a mental block today, but there is a solenoid, diode or something that is attached to that harness. I would check or change it. It appears that would be the only thing left from the list of things that have been changed.
JerryG
Super Member
<font color="blue"> So do these diesels build enough exhaust pressure at idle to spool the turbo or are they stagnant until higher rpms ? </font>
As most all turbos, there is no boost at idle. They have to have several RPMs before the turbo spools enough to create boost.
As most all turbos, there is no boost at idle. They have to have several RPMs before the turbo spools enough to create boost.
JerryG
Super Member
<font color="blue"> So do these diesels build enough exhaust pressure at idle to spool the turbo or are they stagnant until higher rpms ? </font>
As most all turbos, there is no boost at idle. They have to have several RPMs before the turbo spools enough to create boost.
As most all turbos, there is no boost at idle. They have to have several RPMs before the turbo spools enough to create boost.
TractorLegend
Platinum Member
I'm confused now... Is it a turbo seat or a non turbo seat getting wet?? /forums/images/graemlins/shocked.gif /forums/images/graemlins/grin.gif
TractorLegend
Platinum Member
I'm confused now... Is it a turbo seat or a non turbo seat getting wet?? /forums/images/graemlins/shocked.gif /forums/images/graemlins/grin.gif
</font><font color="blue" class="small">( I'm confused now... Is it a turbo seat or a non turbo seat getting wet?? )</font>
Hahaha
I think I'd smoke pretty good too if I had a wet butt after sitting on my tractor seat! /forums/images/graemlins/grin.gif
Hahaha
I think I'd smoke pretty good too if I had a wet butt after sitting on my tractor seat! /forums/images/graemlins/grin.gif
</font><font color="blue" class="small">( I'm confused now... Is it a turbo seat or a non turbo seat getting wet?? )</font>
Hahaha
I think I'd smoke pretty good too if I had a wet butt after sitting on my tractor seat! /forums/images/graemlins/grin.gif
Hahaha
I think I'd smoke pretty good too if I had a wet butt after sitting on my tractor seat! /forums/images/graemlins/grin.gif
