bluish smoke on start up,need help!
Apr 3, 2014, 08:08 AM
#1
bluish smoke on start up,need help!
Hey guys,
Have a 2004 Evo8 with a built motor, stock head.I have noticed my car smokes on startups and now at idle.The smoke looks like bluish smoke and would usually go away when car is warm up. But recently its now throwing light smoke at idle and when you rev it. When I did the motor build, I had bought the Mitsubishi overhaul kit and had my builder change valve seals. Now I am having doubts if its valve seals or could this be valve guide? I will also be pulling the intake to check turbo as well.
I just checked my oil and seems to burn atleast half a quart in 5 days so oil is passing somewhere for sure. Please all the advise would be greatly appreciated and take into consideration thanks guys.
Have a 2004 Evo8 with a built motor, stock head.I have noticed my car smokes on startups and now at idle.The smoke looks like bluish smoke and would usually go away when car is warm up. But recently its now throwing light smoke at idle and when you rev it. When I did the motor build, I had bought the Mitsubishi overhaul kit and had my builder change valve seals. Now I am having doubts if its valve seals or could this be valve guide? I will also be pulling the intake to check turbo as well.
I just checked my oil and seems to burn atleast half a quart in 5 days so oil is passing somewhere for sure. Please all the advise would be greatly appreciated and take into consideration thanks guys.
Apr 3, 2014, 08:40 AM
#2
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Still sounds like valve seals.
Even tho you had them changed, they still could have gone bad/worn out.
There are several different materials seals are made from, with different temp ratings.
IMHO the blue vitions are the best out on the market.
For the guides to be worn bad enough to unload one side of the valve seal, you would also get a skip or miss randomly, due to the valve not seating correctly.
Even tho you had them changed, they still could have gone bad/worn out.
There are several different materials seals are made from, with different temp ratings.
IMHO the blue vitions are the best out on the market.
For the guides to be worn bad enough to unload one side of the valve seal, you would also get a skip or miss randomly, due to the valve not seating correctly.
Apr 3, 2014, 09:03 AM
#3
Still sounds like valve seals.
Even tho you had them changed, they still could have gone bad/worn out.
There are several different materials seals are made from, with different temp ratings.
IMHO the blue vitions are the best out on the market.
For the guides to be worn bad enough to unload one side of the valve seal, you would also get a skip or miss randomly, due to the valve not seating correctly.
Even tho you had them changed, they still could have gone bad/worn out.
There are several different materials seals are made from, with different temp ratings.
IMHO the blue vitions are the best out on the market.
For the guides to be worn bad enough to unload one side of the valve seal, you would also get a skip or miss randomly, due to the valve not seating correctly.
well I was hoping not since the motor was built last October making it only 6 months now but I am not ruling it out either.
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Apr 8, 2014, 08:07 PM
#11
ok so this afternoon we pulled the spark plugs and found oil on all four, just residue of oil on the sides of them and some oil just around the spark plug cover. Now i was doing some research on oil on spark plugs and see a lot ppl replaced the valve cover gasket and spark plug seal, could this be my problem?? So the explanation for the blue smoke is the oil that the plugs are burning that is coming through the spark plug cover seal ? please need some advise on this update thanks.
Apr 9, 2014, 07:46 AM
#12
ok so this afternoon we pulled the spark plugs and found oil on all four, just residue of oil on the sides of them and some oil just around the spark plug cover. Now i was doing some research on oil on spark plugs and see a lot ppl replaced the valve cover gasket and spark plug seal, could this be my problem?? So the explanation for the blue smoke is the oil that the plugs are burning that is coming through the spark plug cover seal ? please need some advise on this update thanks.
-Michael
Apr 9, 2014, 11:49 AM
#13
Hey Michael I replaced all four plugs today and tighten them all, car still shoot light bluish smoke under normal driving and also at idle. There was oil in all of the cylinders where the plugs rest. I am about to change the valve seals next wk to see if that's the problem. Another thing that is crossing my mine could it be rings?
When I did the rebuild had to bore the block and get machined, so I went .20 over
I am running 85.5mm Wiseco 9:0:1 CR, could it be my builder didn't use the right clearance on the pistons? I am currently on 93 octane with meth what clearance should have used here?
Last edited by boost556; Apr 9, 2014 at 11:55 AM.
Apr 10, 2014, 09:02 AM
#15
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Now that you say you are getting bluish smoke at normal driving conditions, That points to bad rings or turbo seal, or a kinked turbo oil return, or a issue in the PCV system.
Now if rings, it would not clearance as an issue, but the wrong grit stone used when the block was honed, to coarse of a stone would just chew the rings up in short order.
If the PCV system is the issue, the oil vapors are not being vented correctly, and being sucked into the inlet track, the TB blade should be overly oily.
If turbo, it could be caused by high oil pressure into the turbo, forcing oil past the seals.
A kinked oil return will not allow the turbo to drain properly, and allow oil to be backed up into the turbo, forcing oil past the seals.
Run a leak down test, this will let you know how well the rings are seating.
Now if rings, it would not clearance as an issue, but the wrong grit stone used when the block was honed, to coarse of a stone would just chew the rings up in short order.
If the PCV system is the issue, the oil vapors are not being vented correctly, and being sucked into the inlet track, the TB blade should be overly oily.
If turbo, it could be caused by high oil pressure into the turbo, forcing oil past the seals.
A kinked oil return will not allow the turbo to drain properly, and allow oil to be backed up into the turbo, forcing oil past the seals.
Run a leak down test, this will let you know how well the rings are seating.