l-jet gurus need input, l-jet lean running Options

[ablose58]

Thanks in advance for the advice, I have a 74 1.8 l-jet and I just replaced vac hoses intake boots and gaskets/fuel inj seals etc. I also installed an air/fuel mix gauge and the gauge indicates that I am running quite lean also my cyl head temp seems a little high too,around 350f so what's the best way to richen my overall mixture so head temps and air /fuel mix is closer to 14.7 or stoich if you will ? thanks again AL (IMG:http://www.914world.com/bbs2/html/emoticons/pray.gif)

[lapuwali]

QUOTE (rhodyguy @ Apr 15 2005, 07:38 AM)

i have an aar valve for him to try. as he stated, he placed his sensor in a position where it reads the exhaust before it gets to the mufflers on the monza, where both pipes merge coming off the h.e.. would the long exhaust run before the sensor/bung cause a misread? is that what you mean james? his car runs very good and delivers fuel milage over 30mpg on the freeway iirc. just a few idle, start up glitches.

Yes, the distance from the ports matters. Narrowband O2 sensors have to be HOT to work, and they only read correctly in a fairly narrow temp range. The internal heater helps, but it can't do it all by itself.

The narrowband units are also really just three way switches: lean, spot-on, rich. Any other reading is, frankly, a lie. They have no real way of telling if it's way lean or just a tiny bit lean. This car may be running just a tad lean, which could be fuel pressure, it could be dirty injectors. From the description, it's running too well for it to be running way lean (like lean enough to worry about).

The wideband units have much better heaters in them, and can read accurately even just stuffed into the end of the exhaust pipe (so long as outside air isn't diluting the reading). The best meters (including the Innovate) can also be calibrated at any time to ensure a correct reading.

What are the startup and idle glitches?