its old and old cars are a mess. all are. never seen an exception (cept mine, )
for sure a 1991. it's very old. 26yo. no spring chicken there.
only a good shop can find leaks
we clean it with steam cleaner and find source
or use UV dye kit to find it while filthy.(plus matching test lamp)
end leak saga... its Gear oil so that tells you all you need to know.
back to engine,
all engine loose power, sooner or later, all do.
and all do faster and far worse not tuned up
that is the V6 engine it has a name, 6vd1.
its a SOHC engine and is belt driven cam
if power lacks full time the belt slipped,its a 60,000 mile service point.
ip power drops and not what is it>?
well of its a bog, lost fuel pressure are dead MAP,filters fuel/air?
well if its misfires, did it? its time for a tuneup
ever get a full tuneup this decade, i bet not. but most here are not and that is why most are here, skipping tuneups
seeing of spark and filters can run for 500,000 miles.
endless posts on that.,
and that belt ignored, long walk home with it snaps, and will
you left off words, PPM and %
making this way too hard,
HC 7.04 to standard 1.60 and CO 177.6 to standard 40.0.
we do HC PPM and CO in % see?
7% HC is great and avg is 12 (fleet)
177 CO, my guess is 1.7% and is near time max.
what is stardard sounds like fleet avg to me.... not max.
CO can be near zero and is with a good cat , is your cat missing
blown out or rodded out> (insides present)>?
and 10,000 car measures avg here, is . 05% over 10 times less.
here is one passing
see max, just below max on HC, (weak cat is cause)
see CO, here, its tiny, a super safe car. to breath near.
1% max is clear, here, on 25mph rollers.
i think your CO is 1.7% (near 2 times our limit in usa)
the 7 HC over 1.7 is really