4kq bad mileage

[Brady Moffatt]

Hi all,

My 86 4kq is getting really crappy mileage, but it runs well. It'll do about
430km (265miles) on 58litres (15.3US gallons), so about 17mpg.

So far, I've plugged vacuum leaks, new intake and exhaust manifold gaskets,
new injector seals, adjusted CO back to spec with a sniffer, cleaned ISV.
The car runs well, so I can't really complain, but my Audi guru mechanic
friend (and the list here) seem to think I should be getting 25-28mpg. I
used to, til I fixed a wire in the starter to enable the cold start
inj/thermo-time switch to work. Think they're on all the time?

Another hint is that the temp gauge doesn't rise much over 70C, still in the
cold range, and the heater doesn't blow that hot, but the rad fan will cycle
eventually.

What gives? Any ideas?

I'm going to change the thermostat tomorrow, but would that make sucha
difference?

Cheers,
Brady Moffatt
Montreal, Quebec, Canada
86 4ksq, 279,000km
72 Datsun 240Z, 180,000 miles

15cm of snow due tomorrow! WOOHOO! It's about time!