1999 Land Rover Discovery black smoke plugs fouling

1999 LAND ROVER DISCOVERY
152,000 MILES • V8 • AWD • AUTOMATIC
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ROBERT WALLACE
  • MEMBER
  • 1 POST
I recently purchased a 99 disco 1 that had been sitting around for several months 'cause it needed a fuel pump. I replaced fuel pump and filter got it running to get it home but it had run badly. I have replaced crank sensor, idle control sensor,throttle positioning sensor,coil,plugs,wires,purge valve,o2 sensor [1] ,mass air sensor and cant seem to figure out what else could be wrong. Tested with a obd11 and has of code of misfiring. Could this be caused by a leaking manifold gasket? I am wits end and going broke trying to fix it. I have a 97 disco with the same motor that does run can I swap motors?
Nov 11, 2009 at 7:53 AM
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DAVE H
  • ASE Certified Mechanic
  • 13,384 POSTS
  • ASE Certified Mechanic
a leaking intake manifold can cause rough running and misfire codes .. usually with P0171 and P0174 codes ?
Nov 26, 2009 at 6:46 AM
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