From: darling@simlab.arc.nasa.gov on behalf of Dave Darling [darling@simlab.arc.nasa.gov] Sent: Monday, May 10, 1999 11:51 AM To: John Nguyen Cc: pelicanparts@csi.com Subject: Re: 914 Fuel Injection Help >... I also notice that #4 and #1 were black w/ lots of carbon deposits. >I think the problem is my trigger contacts. Is there a way to test this >w/ the contacts still in the distributor? I think a good first step would be to verify the timing, dwell, and the spark coming out of the ignition system. (I'm sorry if you've already done that; it's a reflex for all FI problems.) The trigger points are switches that connect the pin on the left side of the connector to the center pin, and then disconnect them. They also connect and disconnect the right-side pin similarly. You could use an ohmmeter and watch for fluctuations as someone cranks the motor, but that might be hard to see. Or you can pull the distributor and rotate the shaft by hand and watch that way. The points rarely fail. It is more common for the plugs to get messed up somehow, or for the injectors' ground wires to start getting flakey. Check the connector at the distributor end, and make sure that the pins are all in place and don't poke up out when they get plugged in. Also check the multiple ground point at the rear of the top crankcase seam. It is probably worthwhile to unplug it and clean the tabs and con- nectors and so forth. I'm not sure what to say after that offhand. Good luck! --DD Dave Darling 74 914 2.0 (decapitated) darling@simlab.arc.nasa.gov "OFF WITH ITS HEADS!"