Steve,
2. I think the replacement of the door panels in coincidental. The winder
mechanisms can dry out over time, and I'd suggest removing the panels, and
giving
the whole mechanism plenty of grease. I use vaseline, as it is easier to
remove if it leaks onto the window glass.
Also check the wear on the pinion, as these are very prone to wearing out
over time.
WD40 will only give temporary respite.
3. Exhaust smell. It could be that, when you lower the window, you create a
vacuum effect at certain speeds, which would suck in any exhaust leaks from the
down-pipes. Check all grommets are intact and tight in the bulkhead, and the
boot (trunk). If it is fuel stink, rather than exhaust, then it would most
typically be a break in (or absence of) the high-level breather hose between
the
tanks, rather than the low-level cross-over. The cross-over allows fuel
balance between tanks, and is prone to splitting, or may have been left
unconnected
after work.
Cheers,
Julian.
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