decoursm
Active Member
Hey all,
Have a 2004 Takeuchi TL150 powered by a 4 cylinder Turbo Charged Yanmar 4TNV106T-XTBL. I am not the first owner. Currently use it around my small farm for fence building, moving earth and other tasks.
Some uniqueness to this setup... Intake heater, electric fuel priming and dummy lights only for engine instruments.
I replaced all the fluids and filters after i bought it. The machine was always difficult to start, especially when cold.once it warmed up it would start immediately. Generally required a full charge to ensure starting when cold. Lots of black smoke when turning over. Lots of black smoke in general idleing and when under a load. After 100 hrs or so i noticed heavy oil consumption with exaust and oil discharge from the crankcase vent. I tore the engine down in place and discovered the number 1 and 4 oil rings were cracked. A lot of carbon on number 1 and 4 from hours of operation with blow by. I checked the pistons, lower bearings and cylinders for damage and excessive wear. All were within the specs per Yanmar. I flex honed, installed new rings with the older pistons and installed new lower bearings. I sent the head to the machine shop to get it cleaned and replace the valve seals. Machinest mentiones everything looked in order, but he did have to plane the head down a hair to square it up. I reassembled the machine, but did NOT pull apart the turbo, nor did i inspect it. Kicking myself (maybe). I ran it for a bit. Noticed no oil burn, leaking amd seemed to run great for about 50 or so hours. Until...
It started to become difficult to start again. Lots of smoke during engine turn over. Lots of BLUE smoke when running and a ton of blue smoke under load. Noticed unburnt oil spitting out the exhaust. Crankcase vent is clean however; no smoke or oil. I have not yet taken the intake side of the turbo off yet. My question here is would a blown/malfunctioning turbo cause these symptoms? Is taking the intake side of the turbo off going to tell me anything?
Thanks for the help!
Matt
Have a 2004 Takeuchi TL150 powered by a 4 cylinder Turbo Charged Yanmar 4TNV106T-XTBL. I am not the first owner. Currently use it around my small farm for fence building, moving earth and other tasks.
Some uniqueness to this setup... Intake heater, electric fuel priming and dummy lights only for engine instruments.
I replaced all the fluids and filters after i bought it. The machine was always difficult to start, especially when cold.once it warmed up it would start immediately. Generally required a full charge to ensure starting when cold. Lots of black smoke when turning over. Lots of black smoke in general idleing and when under a load. After 100 hrs or so i noticed heavy oil consumption with exaust and oil discharge from the crankcase vent. I tore the engine down in place and discovered the number 1 and 4 oil rings were cracked. A lot of carbon on number 1 and 4 from hours of operation with blow by. I checked the pistons, lower bearings and cylinders for damage and excessive wear. All were within the specs per Yanmar. I flex honed, installed new rings with the older pistons and installed new lower bearings. I sent the head to the machine shop to get it cleaned and replace the valve seals. Machinest mentiones everything looked in order, but he did have to plane the head down a hair to square it up. I reassembled the machine, but did NOT pull apart the turbo, nor did i inspect it. Kicking myself (maybe). I ran it for a bit. Noticed no oil burn, leaking amd seemed to run great for about 50 or so hours. Until...
It started to become difficult to start again. Lots of smoke during engine turn over. Lots of BLUE smoke when running and a ton of blue smoke under load. Noticed unburnt oil spitting out the exhaust. Crankcase vent is clean however; no smoke or oil. I have not yet taken the intake side of the turbo off yet. My question here is would a blown/malfunctioning turbo cause these symptoms? Is taking the intake side of the turbo off going to tell me anything?
Thanks for the help!
Matt