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Join Date: Apr 2008
Location: S.E. Michigan
Shouldn't have to change the boots, but you won't know for sure until you pull and check 'em real good.
The idle change and white smoke indicates that the WD40 was sucked into the engine, (and burned causing the white smoke) so you're right, there is a leak at that spot.
When reassembly begins, be patient with the boots to be sure they are all the way on and sealing, and notice that just inside the boot cast into the rubber is a small indentation that fits over a casting in the metal. That puts the boot in the right orientation, and if it's off the mark, it will leak.
Clamps are like the boots-shouldn't need to change them, but you won't know for sure until they're in your hand and you can see them. Last time you put them on, if they tightened up normally without stripping, then I wouldn't think you'd need new ones.