87 XJ6 Fuel injection help
So, i've pulled out the rest of my hair!
Working on a 86 XJ6. Engine was replaced (blown) by someone else quite some time ago. Car never ran after that! Went through the fuel pump circuit and discovered all was good, excepting the fuel pump! (seized) Replaced the fuel filter, pump, purged all the lines, getting clean fuel to the rail. Symptoms like so... Car starts, runs extremely rough for maybe 30 seconds, then dies. If you keep starter engaged car will run at part throttle, (no higher than 1500 rpm). Once you let off the key it dies. When it stalls there is still spark. Put a noid light on a injector connector. Light flickers dimly while starter engaged and car running. As soon as you let off the key car starts to stall and the noid is BRIGHT! Checked and swapped out main and FP relays, diode resistors seem okay (opened, ohm test), fuel pump running as it should. Checked throttle (idle, full) switch, checked micro switch in AFM, somewhat checked the potenteiameter (sp, checked for change in resistance/ohms). Car will pretty much only start and run with throttle partially open, starter engaged, as if running extremely rich. Dies once starter let off. Unfortunatly don't have the official service manual, stuff we have is next to useless! Thoughts? Eric |
RE: 87 XJ6 Fuel injection help
two things to check:
1) the ignition switch itself, and the wiring behind it, (it plugs into another harness). 2) the Coil. Jose |
RE: 87 XJ6 Fuel injection help
Sounds to me like you have a bad ignition coil like Jose said. When it is dark outside run it and if you see a spark do a little jump between plugs it means you have an arc and need to replace the coil.
|
All times are GMT -5. The time now is 02:57 AM. |
© 2024 MH Sub I, LLC dba Internet Brands