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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs |
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#11
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My dealer told me that it was just the smell of the cats breakin in, and it will eventually go away once they get "Tuned" to the exhaust temperatures. My truck did it for a little while and now it has stopped. Just my two cents.
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#12
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I imagine our noses are very sensitive to even minute amounts of that compound - amounts that are below any regulated limit. Thanks for keeping me humble and reminding me I don't know everything, Lars! - Jack |
#13
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Does sulfur create the same compounds when it burns regardless if it is spark ignition(gas) or compression ignition(diesel)?
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SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. |
#14
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Yeah the diesel pumps around here all say...(This diesel fuel is "ultra low sulfer highway diesel" or something like that...Our 07 likes it, but our 99 seemed to run better on the "dirty" stuff...Whats up with that lol?
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08 F150 Screw FX4 2.5 Level KIT. Volant CAI. Edge Programmer |
#15
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DJ Soutthpaw may have a better grasp on this. But if you would like to compare it to leaded and unleaded gas. Here it goes: when unleaded hit the market in the 70's a lot of cars from then and on back started to experience head problems(valve seats and valves) due to overheating. Well they took away the lead that acted as a lubricant for those parts. So maybe sulfur and some of the other chemicals due to the reduction of them the same thing is happening in diesels. Have you noticed in the last 3 years they want diesels to burn hotter to get rid of more of the byproduct junk. That's on the exhaust end.
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SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him. Last edited by 88Racing; Mon, April 27th, 2009 at 12:15 PM. |
#16
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My truck has been doing it since new but I have noticed its not as bad as it was. Thanks for the feedback guys.
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#17
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The EGR system in gassers was developed to cool the combustion process slightly to reduce formation of this gas. (Of course it also cuts power). Oh, your earlier question Lars - I can't imagine why a diesel would not produce some sulfur dioxide if sulfur was present in the fuel. - Jack |
#18
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08 F150 Screw FX4 2.5 Level KIT. Volant CAI. Edge Programmer |
#19
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Good question! Maybe cleatus12r or southpaw could jump in here. I know next to nothing about diesels (except that they use glow plugs for starting).
When I was a kid, I had a model airplane engine that was a "true" diesel - no glow plug! That thing was super hard to start. I seem to remember that it would also run backwards at times. - Jack |
#20
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yeah.....MY 08 is a stinky ***** too . I've wondered if it is my Magnaflo exhaust but don't know?
I had the exhaust installed on day 1 at the dealer when the truck was brand new......so I never got to smell the stock system! Oh well.......you can't make good power without stinking
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08 FX4 CREW K&N 63 series Intake Magnaflow SI/DO exhaust Custom tunes |
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