I have a 2004 Vue 3.5, smokes pretty bad when getting on it. If I drive normal it’s fine. Did compression tests and was good, thinking valve stem seals??

 

It could very well be. Have you run a compression test on it? How many miles are on the engine?

 

Valve stem seals are a possibility given the age of our cars now, although I don't hear that too often being a big issue on these Honda V6's. Valve stem seals are usually more visible as a puff of smoke on initial start up.

First thing to do is figure out if you're losing oil or coolant. What colour is the smoke? White smoke that dissapates fairly quickly= coolant, blueish-grey smoke that hangs around= oil burning. If it's white smoke then you have a coolant leak somewhere, likely head gasket. Are you losing coolant? Do you track your oil consumption, do you need to add top-offs in between oil changes or is the dipstick level pretty steady? What kind of oil are you using and how often do you change it?

 

Valve stem seals will cause smoke on cold starts but not what you are experiencing. Rings.

 

And now you have an answer from a professional mechanic. Maybe try running a heavier weight motor oil. My son had a KIA Soul with the crap 2.0 GDI engine and it was using a quart of oil every 1,000 miles. I swapped it over to Valvoline Restore and Protect motor oil and did 4 oil and filter changes at 5,000 mile intervals. It reduced the oil consumption to a quart every 5,000 miles. Good stuff. Maybe give that a try and see if it reduces the smoke. I used the 5W30 weight in his Soul. He no longer has it as he traded it in for a new Sportage.

 

I'd second Rubehayseed's suggestion of Valvoline Restore and Protect, preferably in the thicker 5w-30 grade that they sell. By all accounts it's the nearest thing to a miracle oil we've seen, it's very very good at cleaning out carbon deposits and sludge/varnish buildup. If your driving profile is a lot of short tripping less than ~5 miles, even synthetic oils can sludge up and cause issues because the oil never gets hot enough to boil off water from combustion and unburnt fuel. Cold weather and short trips are very hard on oil.

I've seen cars that were burning oil entirely because under the valve covers was covered in sludge so badly that the oil drain holes were almost completely plugged up and oil would pool up in the valvetrain. Once that was cleaned up it was good as new.

 

I’d pull valve covers to check valve clearance and see if you have sludge issue.

 

I would suggest a carbon cleaning using GM's Top Engine Cleaner. It's twice the price of Seafoam or others but it WORKS.