Head Gasket or Turbo?
#1
Head Gasket or Turbo?
Keep in mind this truck has seen 1680* EGT and 52 lbs of boost again and again for 90,000 + miles so I am amazed it lasted this long.
O.K this morning the temps were about 6 Degrees out when I started the truck. Not plugged in as usual, went to high idle ... then 3 cylinder run for 15 minutes.
Hoped in and went off to work .. no problems no smoke ... running just the same as always.
5 Hours later hoped in leaving work, started it, went to high idle and I noticed a bit of blue whisping by the truck. Figured ehh it's cold. Gave it some time and started driving out the parking lot. By the time I made it 200 feet I was POURING blue.
Drove it home (Mainly OFF boost) and when off boost Smokes like a bastard. On boost it's normal sooty for what I have in it. (Edm's DTT blah blah GARRETT Stage III roller bearing turbo)
I just got it home so I have NOT poped the cap to look at the anti-freeze for oil, Nor the outlet side of the turbo piping.
I am leaning twards Head Gasket as off boost is fine, at idle it is BAD, under boost = O.K.
Reason I am thinking this is under no throttle / coast we don't make vacuum to draw oil in (Doesn't mean oil pressure can't override cyl presssure tho) But with the exhaust brake I can throw blue smoke like a Blue Angel
I guess I gotta go an look at what is UPstream of the head (I.E Turbo piping) before I get too nuts here.
O.K this morning the temps were about 6 Degrees out when I started the truck. Not plugged in as usual, went to high idle ... then 3 cylinder run for 15 minutes.
Hoped in and went off to work .. no problems no smoke ... running just the same as always.
5 Hours later hoped in leaving work, started it, went to high idle and I noticed a bit of blue whisping by the truck. Figured ehh it's cold. Gave it some time and started driving out the parking lot. By the time I made it 200 feet I was POURING blue.
Drove it home (Mainly OFF boost) and when off boost Smokes like a bastard. On boost it's normal sooty for what I have in it. (Edm's DTT blah blah GARRETT Stage III roller bearing turbo)
I just got it home so I have NOT poped the cap to look at the anti-freeze for oil, Nor the outlet side of the turbo piping.
I am leaning twards Head Gasket as off boost is fine, at idle it is BAD, under boost = O.K.
Reason I am thinking this is under no throttle / coast we don't make vacuum to draw oil in (Doesn't mean oil pressure can't override cyl presssure tho) But with the exhaust brake I can throw blue smoke like a Blue Angel
I guess I gotta go an look at what is UPstream of the head (I.E Turbo piping) before I get too nuts here.
#4
#7
Well My dad's 97 12v did something similiar to this. Thought it would start and idle fine but it would have No Power and any attempt to go more than 1/3 throttle or so would send smoke pouring out of the exhaust. Turned out the turbo shaft twisted and broke right behind the turbine wheel. I know Garrets are supposed to be pretty sturdy but I'd pull the turbo and check it anyways. My $.02
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