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914World.com _ 914World Garage _ L Jet Tuning

Posted by: bernbomb914 Aug 20 2003, 12:44 PM

Is there a way to adjust the FI for richness? My 1.8 runs rich at the bottom end and lean at the top end. Head temp goes over 450 when you pull a hill over 3000 rpm and runs rough under 2000 rpm. it stays around 300 when I keep it around 3000 on the freeway. what should I do? is there an adjustment?

Bernie

Posted by: Mike D. Aug 20 2003, 01:01 PM

You should check the air flow meter for movement. It sounds like it's not closing enough at idle and not open enough at high rpm. Or it may be moving fine, but the brushes on the sensor part not working properly.

Also not sure about the 1.8 but the 2.0 computer has a richness adjustment nob for idle setting. Also the 2.0 has a head temp sensor, and we sometimes add a resistor inline between the sensor and the computer that will richen the mixture at high rpms when the engine is hot. Again, not sure if the 1.8 has the same thing or works the same way if it does.

-Mike D.

Posted by: fronkensteen1999 Aug 20 2003, 01:55 PM

There's some info http://persweb.direct.ca/aschwenk/earlyefi.htm that can help you tune your L-jet.

Fronken

Posted by: Dave_Darling Aug 20 2003, 03:04 PM

Also at http://www.type2.com ; the later Buses use L-jet as well.

--DD

Posted by: ChrisReale Aug 20 2003, 03:16 PM

Shit dude, 450 is way too hot.