> From: Desmond <[email protected]> > Subject: fuel optimization > > I looked in the > Bentley (thanx to those that made it available on cd) and there is > nothing about checking flow rate to each injector.
i am certain that the bently outlines measuring fuel delivery at each injector, and am fairly certian that it includes jetronic cars. their setup basically is four graduated cylinders on a rack. you pull the injectors and put them in the graduated cylinders. follow the procedure to get the fuel flowing (probably jump the fuel pump relay and pull up on the air meter plate, but i'm not sure) and see if they flow at similar rates. also check the spray pattern to make sure it is a nice cone. i'm sure you can rig up your own type of system, perhaps only testing one injector at a time and spraying the other three in a spare container. as long as you know the flow RATE of each injector (doesnt matter what units, as long as youre consistent) and the spray pattern, you'll be ready to move to the next step. > Question: the little screws/hex bolts next to each outlet on the > distributor , is that where they adjust the output to the > injectors ? , where can I get more info on this ? dont recall seeing them, but thats probably what they are. i would suggest NOT touching them though, till you know what the flow rate and pattern is at the injectors. if you have a bad injector and dont know it, adjusting at the distributor will only mask the problem, not fix it. if any of the injectors have bad flow rate or spray pattern, i suggest getting the whole set cleaned and their flow characteristics measured on a bench. buy new injectors (or hit the junkyard for a handful of old ones and get them cleaned too) to get a set that is matched well if you need to. if you have injectors with similar characteristics, and your "on the car" flow test still fails, THEN you can go messing with the fuel distributor settings. ben _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
