subaru forever Posted September 12, 2015 Share Posted September 12, 2015 98 forester.replaced plugs ngk.wires.fuel filter.coil pk.code says misfire 1and 3,any suggestions Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 13, 2015 Share Posted September 13, 2015 (edited) well, 1 & 3 do share a coil so, that was a good guess. did the wire boots on the plugs have oil on them? how did the old plugs look? also, have you checked for slipped crank or cam timing? Edited September 13, 2015 by 1 Lucky Texan Link to comment Share on other sites More sharing options...
subaru forever Posted September 13, 2015 Author Share Posted September 13, 2015 new plugs.no oil on wires.but drives fine just idle Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 14, 2015 Share Posted September 14, 2015 could be IACV-related, a little leak in the hose (i THINK 98 has a hose) or gummy valve - maybe even a dirty throttlebody? MAF cleaning could be a good idea too. Link to comment Share on other sites More sharing options...
subaru forever Posted September 20, 2015 Author Share Posted September 20, 2015 key way tight.thinking it could be water in fuel.idle is rough.but driving is fine after warming up Link to comment Share on other sites More sharing options...
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