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busser
Active Member
29 Posts |
 Posted - 07/20/2019 : 01:22:07 AM
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I have a school bus with a dt466e engine with 206k miles. Sometimes, but not always it takes a long time to start and when it starts it produces a huge cloud of smoke which disappears quickly. Other times it starts perfectly fast with no smoke. Does anyone know what the problem could be? Thank you
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RonF
Top Member
867 Posts |
Posted - 07/22/2019 : 07:19:04 AM
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quote:
Originally posted by busser
I have a school bus with a dt466e engine with 206k miles. Sometimes, but not always it takes a long time to start and when it starts it produces a huge cloud of smoke which disappears quickly. Other times it starts perfectly fast with no smoke. Does anyone know what the problem could be? Thank you
Year and make of the bus? What color is the smoke? How long is a long time? Are there any warning lights on while cranking? |
US Army retired CMBT |
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peter2019
Senior Member
125 Posts |
Posted - 07/23/2019 : 5:53:21 PM
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| You might get low compression, if you see lots of smoke came from oil cap, it's time to inframe engine. |
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busser
Active Member
29 Posts |
Posted - 07/26/2019 : 11:03:43 AM
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| grey smoke. 2002, smoke comes from tailpipe |
3005 IC bus CE300, DT466e engine, alison transmission, 206k miles |
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RonF
Top Member
867 Posts |
Posted - 07/29/2019 : 07:25:47 AM
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quote:
Originally posted by busser
grey smoke. 2002, smoke comes from tailpipe
Definitely sounds like low compression. |
US Army retired CMBT |
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busser
Active Member
29 Posts |
Posted - 07/29/2019 : 11:36:42 PM
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| how does low compression make the smoke go away after a few seconds and how come the problem is intermittent? |
3005 IC bus CE300, DT466e engine, alison transmission, 206k miles |
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RonF
Top Member
867 Posts |
Posted - 07/30/2019 : 08:30:44 AM
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quote:
Originally posted by busser
how does low compression make the smoke go away after a few seconds and how come the problem is intermittent?
Let me backup. Grey is mostly likely leaky or worn injectors, or restricted air intake. I would lean towards injectors being an 02 and if they are original. Low compression would cause this if you have minor low compression or clogged rings. |
US Army retired CMBT |
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dt466e startup problems and smoke
