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Old 05-12-2003, 08:37 PM   #1 (permalink)
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Default Why does it keep fouling plugs?

My car is running pig rich. I just had the plugs changed over the weekend, and they're black already. I failed inspection again, and I'm pretty sure it's due to running rich. Hydrocarbons are a little over 9 times the allowable limit. Is it the BOV?
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Old 05-12-2003, 08:40 PM   #2 (permalink)
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very possible the BOV is doing it. could need O2s also.
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Old 05-12-2003, 08:41 PM   #3 (permalink)
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damn quick reply
No engine codes though. I already replaced the front O2 already.
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Old 05-12-2003, 08:54 PM   #4 (permalink)
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are you running an open atmosphere BOV? if so, thats probably why
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Old 05-12-2003, 09:04 PM   #5 (permalink)
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Yeah it's open air...the RFL. I figured it was the problem, and I was gonna install the stock one back in, but I lost the hose that goes from the BOV to the pipe just past the MAF...I gotta find it.
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Old 05-13-2003, 02:59 AM   #6 (permalink)
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yeah thats what happened to me....i installed the rfl and it made me run as rich as they come. then i went with the hks ssq and im doing ok i think, probably still rich but oh well...are you having any stalling problems?
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Old 05-13-2003, 04:20 AM   #7 (permalink)
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Try putting a couple more washers in the RFL, i had the same problem running to rich, the BOV was letting out a lil to much air, i put in 2 more washers and pulled apart the spring a lil bit and it hasnt had a problem since
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Old 05-13-2003, 07:46 AM   #8 (permalink)
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I'll only have stalling problems if I put it in neutral or put the clutch in under boost, or just after running it hard. It sometimes would dip the RPMs really low under normal driving (almost like it would be about to stall than catch itself).

But I put 2 more washers in it. Now I'm running 5. Would I still be running rich just because it's an open air BOV, or does the amount of washers prevent it from running rich?
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Old 05-13-2003, 12:13 PM   #9 (permalink)
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i was in the same boat, i had to use all 6 washers to keep it from stalling out, but i was still running rich, i think the reason you are running rich is because its an open atmosphere. the washers are only there to reduce spring tension.
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