Scotty, while I understand the need for induction cleaning on direct-injection power plants, is it really necessary when dealing with NON direct-injection systems? My previous experience with conventional fuel injection was a BMW 735IL after 30 years the valve train was immaculate!
Now I have a beautiful 2017 Lincoln Continental 3.7 L NON direct injection V6 and the dealer is VERY insistent I do an intake cleaning!
Your thoughts?
Mark in Wichita,KS
No, you don't need it. The dealer wants to sell you stuff, not a surprise.
The valve-TRAIN consists of all the moving parts including camshafts, pushrods etc. which have nothing to do with intake/induction. The valves themselves & throttle bodies do get varnish and carbon residue from PCV vapours over time. You didn't provide your odometer reading, but I wouldn't expect significant buildup after only 4 years. Unless it's a weakness of this particular engine.
