Originally Posted by Virginian
you diddled with the intake manifold for no reason.
The advice to ElCaminoman to do the UIM/LIM procedure was good
advice. Not only that, it was obviously correct
advice. I was not the one who offered the advice, so I have no axe to grind. The advice was offered by club experts who have personal hands-on experiences with Series II intake manifolds numbering in the double digits. I wouldn't lightly discount their opinion. The procedure did
solve the problem of coolant loss and white smoke.
If you reread the thread, you will find the following facts:
1. It was determined by the car owner that the smoke was substantially white smoke -- meaning coolant being boiled through (yes, there seemed to be some oily smoke at times -- no doubt this car may have had multiple issues).
2. There was coolant in the oil.
The above facts suggest: a) an intake manifold problem b) a head or head gasket problem, or c) a cracked block.
As I read through the club posts, Series II engines invariably will have the intake manifold problem. I have rarely, if ever, found club members with these symptons described to have head or block problems. It'* almost as if the intake manifold in Series II engines is a de facto
(but unfortunate) warning signal for owners to get their coolant system (as well as many other items under the hood) back in shape.
Lastly, I'm a strong believer (and not the only one) that the club'* UIM/LIM procedure is just plain good preventative maintenence, even without symptoms. The cost and effort of doing this is more than justified considering the consequences of not catching an intake manifold problem in this particular engine soon enough.
(elcaminoman: Don't throw in the towel yet. I'm sure the gearguys are thinking about your problem and will have questions to ask. I have some questions and comments myself, and will offer them after I think them out a little bit -- slug)