Quote:
Originally Posted by y2kbug
My 99 corolla smoked a ton when we first got it. Roughly 312,000 miles. We ran it a while and it smoked up the whole neighborhood at idle and didnt stop. I thought it was too worn out to save and required a rebuild or replacement but we dumped seafoam and transmission fluid in the oil. A whole bottle of seafoam in the oil a whole quart of trans fluid went in too. (Way too much in my opinion but what have we got to lose. The engines already bad) I think we may have put a bottle of seafoam in the fueltank as well.
https://ecomodder.com/forum/showthre...ead-41650.html
It quit smoking at idle and became a usable engine after we did that. It still smokes some at full throttle and coasting down long hills when torque converter is engaged but thats nothing compared to what it was. I daily it and its at 382,000 miles currently.
I used to use transfluid in my 1998 corollas engine. It was tired and old. It seemed to help. It burnt a lot of oil. When i had the valve cover open its pretty clean. I havent used any of that in my dakota's engine and its kinda dirty and sludgy. I may try that next. |
--------------------------------------------------------------------------------------
That's the likely scenario.
The former owner may have used 'non-premium' motor oil, or failed to change it within the prescribed 'time' or 'distance' constraints, and the piston rings got stuck.
Your 'detergent' shock freed the rings, they sprung back 'out', resuming the oil control function, reducing the blue smoke.
They're not as good as 'new', but way out ahead of where they were.
During deceleration and engine braking, the combustion chamber is exposed to low manifold pressure, sucking oil, probably-mostly through the valve guide seals.
When you got 'back on the throttle' you'd see a puff of smoke, then it'd clear back up as long as the throttle remained open. ( early 80s Mitsubishi engines were famous for this ).
-------------------------------------------------------------------------------------
What's instructive from your observation is:
* The first thing 'MotorSilk' recommends for their customers is, to run their proprietary 'Step One' Motor Flush ( MSSO ) through the engine, per directions, and then drain the crankcase before adding their 'Engine Treatment,' ( MSET ) and new oil.