B6T Crazy Blue Smoke
#1
B6T Crazy Blue Smoke
My B6T-swapped Festiva has been parked since May. Continuous thick smelly blue smoke which has popped up out of nowhere prevents me from driving it again, and I'm pretty frustrated. It's the worst smoke I've ever seen... almost as if the motor had a mixture of motor oil and Seafoam for fuel. I checked the turbo/intake/intercooler, changed the PCV valve and hoses, and did an oil change with some higher quality 10W30 oil. This motor build only has 18 months and maybe 5,000 miles on it.
130/120/125/135 dry compression and 170/175/150/180 wet compression. Cylinder four's piston has a puddle of oil on it, which makes sense given the two intake valves on cylinder four are drowning in oil with the way the car has been sitting in my driveway.
Now given the low compression result is not an isolated incident (it has been this low sadly since the motor was built), I'm assuming the blue smoke can be attributed directly to the cylinder four intake-side valve stem seals.
I tried ordering valve stem seals, but the Beck Arnley part number Rock Auto provided is way too large for my valve guides. I'm going to guess that they are the same between the Miata 1.6L and my 323GT 1.6L, so does anybody know which valve stem seals I should try next?
130/120/125/135 dry compression and 170/175/150/180 wet compression. Cylinder four's piston has a puddle of oil on it, which makes sense given the two intake valves on cylinder four are drowning in oil with the way the car has been sitting in my driveway.
Now given the low compression result is not an isolated incident (it has been this low sadly since the motor was built), I'm assuming the blue smoke can be attributed directly to the cylinder four intake-side valve stem seals.
I tried ordering valve stem seals, but the Beck Arnley part number Rock Auto provided is way too large for my valve guides. I'm going to guess that they are the same between the Miata 1.6L and my 323GT 1.6L, so does anybody know which valve stem seals I should try next?
#3
Elite Member
iTrader: (37)
Join Date: Apr 2010
Location: Very NorCal
Posts: 10,441
Total Cats: 1,899
Supertech Valve Seal Miata = $12.49
Also: Go make an intro thread here: Meet and Greet - Miata Turbo Forum and tell us about this marvelous B6T smoke machine
Also: Go make an intro thread here: Meet and Greet - Miata Turbo Forum and tell us about this marvelous B6T smoke machine
#8
Did another compression test today just to see what's going on. 150/145/140/150 dry. Didn't have time for a wet test unfortunately. Either way, that's 20psi higher than before... all I did was take out the camshafts and lifters before putting them back in after finding out that my valve stem seals were the wrong size.
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
SuperSneakySecretSquirrel
Meet and Greet
5
09-06-2015 08:30 PM