99 Acura Integra with 100k in California.
I did all the maintenance and wanted to check the electrical timer.
So I draw a line to mark the current position of the dizzy and loosened (just to make sure I can loosen it when it is cold) then tightened 2 out of 3 bolts.
Then of course shorted the thing under the dash and get it to warm up and tested the timing - it was on the dot. So made no adjustment. Stopped everything and tightened the dizzy and done with it.
Of course I ran the car at 3k rpm for about 3 minutes to get the radiator fan to come on. The next gas tank fill, I only got about 20miles - I used to get better than 22 maybe 24.
There had been a few more full tanks but involved some freeway driving and got 24/25. Currently it probably used 9gal and shows 192 miles on the trip meter. I am wondering if my attempted tuning worked against me?? Any tips? All the parts (rotor and … from Acura) are new and I did one at a time just to observe the difference - all positive except the last one which I am unsure. Is there a service that will take care of this issue? What is it called?
BTW: I recall in 2000, I had a 86 prelude - took it to a private Honda shop and they recommended to change the rotor among other things. The mileage dropped drastically from about 27 to 20 (from memory) or less. Mechanic said it will get better when the winter goes away but it never did. I don’t have the car anymore. I still wonder why? Are factory settings are far superior or …? I removed my dizzy on my 87 Integra and put it back but no issue with gas mileage.