my vehicle has only 190 thou miles tons of power super clean BUT after
idling about 5 min it begins to smoke oil lightly then about 10 min
smoking pretty good so I take it out bout a quarter mile down the road and
no smoke I turn around punch it and im at about 90 in a hundred yards i
pull in the drive about 5 min later smokes back 8 min later lots of white
smoke now i press the gas tons of white smoke for 1 min then decreases to
none then i take it down the road again no smoke turn around come back
very fast no problem back in the drive 5 min later light blue smoke again.
NOW the thing is the car was bought yesterday it has sat in a heated garage
for 4 years and a divorce later and 1 year outside. basically the vehicle
has not been driven (but started and moved around slightly) for 5 years.
underneath the oil pan gasket seems to leak slightly on rear corner. I
changed oil to 10w40 and new filter and STP oil treatment. Trans fluid was
about a quart low seems fine. I just want to figure out some diagnostic
ideas other than my own.
Blue smoke=oil burning. Check tranny oil. Also check modulator valve vacuum
line to see if you have a lot of oil present. Also, check modulator valve
vacuum line with hand vacuum pump.
Black smoke=too much fuel
Steam at exhaust=water/coolant entering combustion chamber somewhere
Personally, I would suspect valve guide seals since you seem to have a
build-up of oil during long periods of idle. Other possibilities iclude any
way oil can enter the intake manifold. Good luck.
Sounds like a head gasket failing and dumping oil and coolant into
combustion chamber.Also to consider is a crack in the head itself near
an exhaust valve.Oxygen sensor is probably screwed up at this point
its only blue smoke now, i filled r up with 93 octane, changed the oil 10w
40 added some stp and it still dosent smoke aat first only about 5 min
later then i rev it up to round 2 grand and a minute later hardly no smoke
Contrary to other (pessimistic) opinions I suggest you drive it (don't
hot rod it) a while and keep a log of fluid additions. Qt of oil at xxx
miles and date , added coolant miles & date, so you have a track of
what's going on with this engine. It could be (optimistic) that the
rings have gotten "lazy"; some longer drives will cure that.
I believe the motor's valve guide seals - the plastic seals around the
valve stems - may be worn out and need to be replaced. This can be done
without removing the cylinder heads - but wait until you log confirms
(i) excess oil use and (ii) no coolant loss.
What he SHOULD do is check the coolant and oil; if the coolant cloudy and the
oil muddy (or cloudy) then it's time to stop. Best to
pay $50 and tow it and get it checked out before potentially causing 10 times as
Or just use a vacuum gauge if you have one.
Connect and if the needle fluctuates between 10 and 25 in./Hg. as the
engine speed increases will tell you that the head gasket is leaking.
If it vibrates excessively between 8 and 20 in./Hg at idle,this
indicates worn valve guides.
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