engine burning oil

T

tyfoo

New member
ive been driving the typhoon the pass two days and today i had to pass someone so i got it up around 80mph. looked in the back and saw a cloud of smoke thought i went to close to the sholder and kicked up some dust. tried it again flooring it and when i let go of the gas smoke came out.
got home and a guy stoped to looked at the typhoon at the same time it was smoking from the wheel wells. shut the car down looked under and notice it was wet on the down pipe. were it connects to the cat. it looks like trans fluid from the seal on the pan. is there any thing in that area that could leak?and why is it spilling out on high speeds? also did a compression when i changed the plugs every cylinder is in 158-160psi. during the tune up notice oil was over filled alot. Is it possable that oil got into the pvc system and when i got on it its clearing out? or should i look some place else the truck has 40,000 miles on it thanks for the help guys
 
S

skata

Donating Member
if your truck smokes when you rev the engine and let off the throttle(at high speeds), that vaccum created in the intake of the engine causes oil to be sucked through the valve seals. your valve seals are probably bad, which is real common on 4.3's . you'll just have to learn to live with it. or you need to replace the valve seals or redo the motor all together.

as far as tranny fluid leak, it could be the pan seal or too much fluid in the trans. if there is too much fluid, it will come out of the overflow tube on the top of the trans case.

hth
 
L

Lynn D. Brown

New member
There R a couple of other things on that side of the trans that can be leaking. The oil cooler lines going in the side - they have 2 threaded connections each. The flared Al lines thread into a threaded brass adapter. And the TV cable goes in there also, in addition to the dipstick tube.

I've had the oil lines leak before. Sometimes guys cross thread them installing them. It's always hard for me to get those lines threaded in straight, and it can really take some patience.

U should make sure whether it is trans oil or engine oil. The tranny oil is much thinner, and the stock stuff is red..
 
B

Boosted

New member
I would look at vacuum modulator? If are trucks are so equipped. Not sure if they are or not. I had one on turbo 350 that would smoke when the trans was full as the modular leaking and engine vacuum was sucking T fluid up the line into the intake vacuum port.
 
canadian

canadian

sy in progress
make sure the pcv valves are all the way in the valve cover. there are 2 on the passenger side.
 
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