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idle runs rough

subaru forever
in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX

Featured Replies

98 forester.replaced plugs ngk.wires.fuel filter.coil pk.code says misfire 1and 3,any suggestions

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 by 1 Lucky Texan

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.

  • Author

key way tight.thinking it could be water in fuel.idle is rough.but driving is fine after warming up

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