hi there, still trying to improve my milage on my 1987 1050cc VW polo. from my odometer calculations i have been getting around 20mpg for the last 2 years.i can remember doing better than 35mpg for urban driving.observations so far:
-odometer: drove a bit behind a friends car.mine is 9% slower than his, but this translates to a incr of 2mpg only (i want 35mpg!!)
-spark plugs: mine (compared to the haynes color page on plugs) they are a nice tan brown, not black with carbon or oily.gapped ok
-air/oil filter: changed annually
-wheels: jacked car and spun each to see if they are binding.
-choke: rpm does actually go down from 1500 to 750 after 1 minute
-ign timing: spot on with strobe
-distr cap & rotor: changd last year,no improvement.
-carb: cleaned out float bowl and jets this year.
-tyres:kept inflated correctly with my own pump
-boot: only spare tyre & jack. no junk
i am at loss of what to try before taking it to a garage. i am contemplating polishing exterior and removing mirrors to gain a few mpg !
also: i pulled each lead off one at a time with the engine running and each cylinder appeared to be contributing well. i have never had the ignition leads changed. do new leads give better mileage or is it either it works or it doesnt part?
thanks for patiently reading my post