Soot around Exhaust tip

Alban61 · 10-24-2003, 03:36 PM

Had a problem with bucking, hesitating, and change in exhaust tone. Dealership did diagnostics and found bad plugs and wires. They cleaned the injectors too. Problem with bucking etc. is solved, but still having that change in exhaust tone. Noticed black soot at the tip of the exhaust. Cleaned that out but it formed back again within a couple days. Exhaust sounds deeper, and seems to drone alot more than usual. Noticed a decrease in power too. Dealership told me that there was no exhaust leak. Any suggestions? Also hear a rattle at higher RPMs, but I think that's just the covering on the catalytic converters. Will take care of that with some metal straps.

*huskyfan23* · 10-24-2003, 04:07 PM

It's probably a carbon buildup, dunno of a fix though.

Alec · 10-24-2003, 05:15 PM

Maybe you're getting too much fuel: that is likely a Fuel Pressure Regulator problem.

Alban61 · 10-25-2003, 09:07 PM

Thanks guys. Will check about the FPR. Would that also cause the exhaust tone to change?

10-24-2003, 03:36 PM	#1
Alban61 Wannabe Elite Explorer Mountville, PA '99 XLT Join Date: Aug 2003 Posts: 8 Vehicle Specs (Original Poster)	Soot around Exhaust tip Had a problem with bucking, hesitating, and change in exhaust tone. Dealership did diagnostics and found bad plugs and wires. They cleaned the injectors too. Problem with bucking etc. is solved, but still having that change in exhaust tone. Noticed black soot at the tip of the exhaust. Cleaned that out but it formed back again within a couple days. Exhaust sounds deeper, and seems to drone alot more than usual. Noticed a decrease in power too. Dealership told me that there was no exhaust leak. Any suggestions? Also hear a rattle at higher RPMs, but I think that's just the covering on the catalytic converters. Will take care of that with some metal straps. __________________ Al '99 XLT 5.0L K&N Filter, cut airbox, Flowmaster 70 Series Big Block II

10-24-2003, 04:07 PM	#2
huskyfan23 Rah no Hans Bwix WA 1994 XLT 4x4 Join Date: Nov 2002 Posts: 6,896 Vehicle Specs	It's probably a carbon buildup, dunno of a fix though. __________________ 1994 Explorer XLT My registry entry: here Diamond Everything w/ HID Bi-Xenon Projectors I'm no doctor, but I am a self-proclaimed genius. There's no reason not to trust me. What kind of dessert causes women to gain the most weight? Wedding cake

10-24-2003, 05:15 PM	#3
Alec Elite Moderator Houston, Texas 2008 JK Join Date: Apr 2000 Posts: 16,061 Vehicle Specs	Maybe you're getting too much fuel: that is likely a Fuel Pressure Regulator problem. __________________ Alec "Dr. Candlepower" Rosenbaum Daily: 2008 JK Gone: EE "Splat", 2003 VW GTI VR6, 85 Bronco project

10-25-2003, 09:07 PM	#4
Alban61 Wannabe Elite Explorer Mountville, PA '99 XLT Join Date: Aug 2003 Posts: 8 Vehicle Specs (Original Poster)	Thanks guys. Will check about the FPR. Would that also cause the exhaust tone to change? __________________ Al '99 XLT 5.0L K&N Filter, cut airbox, Flowmaster 70 Series Big Block II