milage mileage... the holy grail

beerismygas · 2005-04-25T18:04:22+00:00

hi there,still trying to improve my milage on my 1987 1050cc VW polo. from myodometer calculations i have been getting around 20mpg for the last 2years.i can remember doing better than 35mpg for urbandriving.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) theyare a nice tan brown, not black with carbon or 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 junki am at loss of what to try before taking it to a garage.i am contemplating polishing exterior and removing mirrors to gain afew mpg !also: i pulled each lead off one at a time with the engine running andeach cylinder appeared to be contributing well.i have never had the ignition leads changed. do new leads give bettermileage or is it either it works or it doesnt part?thanks for patiently reading my post

Apr 25, 2005 20 Replies

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beerismygas 21 years ago

i think i found it. while pumping the throttle manually to test mixture screw experiment i noticed some fuel collecting under the Pierburg 2E3 accellorator pump. i took it out and observed fuel leak stains on the lower diaphram and on the carb casing (photos) which i couldnt even wipe away with a cloth.

thanks for all advice and support

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