My 1988 Vanagon with 260K failed its smog check. I was wondering if
someone could point me in the direction of what to look to in order to
better the numbers and pass the test. The van has been sitting for a
long time. I did do an oil change and put in new plugs before the test.
One of the lifters was clicking loudly when I first ran the van for a
number of miles, and I noticed a fair amount of white smoke - water
vapor? When the engine idles it does smell a bit rich. The O2 sensor was
changed about a year ago and the cat is about 3 years old.

Here are the numbers

IDLE Test 1:
HC    432         (STD 220 )
CO    1.5636     (STD 1.0)

IDLE Test 2:
HC    315
CO    1.5527

Thanks
Todd
'88 Westy