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dieseldan55, Mechanic
Category: Construction and Road Equipment
Satisfied Customers: 756
Experience:  Road Mechanic for Volvo Construction Equipment.
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Have a volvo ec15b excavator runnibg away has all new filter

Customer Question

have a volvo ec15b excavator runnibg away has all new filter cleaned tank and all fuel lines had injectors test were good found stuck thermostat rwemoved now getting white smoke and plenty of it before i removed thermostat the smoke was black also plenty of it
JA: When did you last fill the tank? And do you smell gasoline around the engine?
Customer: filled today no gas smell
JA: What is the make/model/year of your car?
Customer: its not a car its a excavator 07 ec15b
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: cleaned return lines set idle screw all the way out
JA: Anything else you want the mechanic to know before I connect you?
Customer: are you a volvo excavator mechanic or a car mechanic
JA: No. I'm the Volvo mechanic's Assistant.
Customer: i prefer to talk to someone whit diesel experience no offence
Submitted: 10 months ago.
Category: Construction and Road Equipment
Expert:  dieseldan55 replied 10 months ago.

Hello my name is ***** ***** seems to be the issue your having?

Customer: replied 10 months ago.
this unit was running wild and was putting out lots of black smoke cleaned return lines tank injector lines had injectors tested found unit was running hot thermostat was stuck closed removed thermostat now unit still running wide open but smoke is white
Expert:  dieseldan55 replied 10 months ago.

Hello, okay so it sounds like your telling me the engine is at wide throttle at all times. Also that you have a lot of white smoke coming out the exhaust . White smoke equals either coolant or excessive un-burn fuel. So since the unit ran hot are you losing coolant or adding coolant? Also timing of the injection pump could be a issue with un-burn fuel so the pump may have internal issues. I would recomend doing a compression test and look for about 400-450 psi on each cylinder with no more than 10% deviation between. Also check the timing if you have the ability. Thanks Dan

Customer: replied 10 months ago.
im heading towards a head gasket cause it was run hot is that possibly the problem
Expert:  dieseldan55 replied 10 months ago.

yes that would allow coolant into the cylinder or cause compression loss.