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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: inchaos10 on April 09, 2011, 06:55:34 PM

Title: running rich
Post by: inchaos10 on April 09, 2011, 06:55:34 PM

I have a 1.6 8valve thats running rich. replaced the o2 sensor already. what els can it be?

Title: Re: running rich
Post by: GlockGuy40Cal. on April 09, 2011, 11:54:23 PM

does the exhaust manifold have a crack in it?

Title: Re: running rich
Post by: fordguy79 on April 10, 2011, 10:33:57 AM

x2

Title: Re: running rich
Post by: inchaos10 on April 10, 2011, 12:05:06 PM

I cnt see a crack with it on. But i do have a leak where it bolts to the rest of the exhaust. Im guessing this is causeing it?

Title: Re: running rich
Post by: CAMISAMI on April 11, 2011, 05:40:17 AM

Only if it is before the O2 sensor. I will asume this is a speed density EFI meaning it does not have a mass air flow[MAF] sensor- I would look at the manifold absolute pressure[MAP] as it is the main source of info for the ecu for fuel along with the O2 sensor. ck the wire connection and the vac hose. if it is a MAF system the same holds true for the MAF ck the intake hoses and MAF connector.