View Single Post
87 930 87 930 is offline
Registered User
Join Date: Nov 2007
Location: Hesperia, Ca.
Posts: 156
misfire under load

Hello Paul;
Good ideas from the other guys. I'm thinking a fuel issue here. Misfire is mostly under load could be a restricted fuel filter or a fuel pump going bye-bye. When it starts to die, it'll fail intermittently under load. As it gets worse and pressure drops, the misfire will become more consistent. Our 930s are thirsty under load and we need lottsa pressure and volume; perfect pumps are critical.

I think that you failed CO emissions due to an improper CIS mixture (adjust the screw properly). Let us know.
Scott - 1987 930: 3.45L Supertec engine w/GT3 crank, California Motor Sports upgraded 930 trans, modified suspension, Zuffenhaus 9's and 11's, black on black..."The Black (Financial) Hole"
Old 07-27-2010, 12:31 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)