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92 Ford Explorer,motor running has huffing sound


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tiger88mm
Novice

Nov 20, 2014, 1:42 PM

Post #1 of 4 (1274 views)
92 Ford Explorer,motor running has huffing sound Sign In

1992 ford explorer,xlt,4.0,about two weeks ago alternator was over charging so replaced with new one,every thing back to normal,then about three days later noticed a huffing sound from exhaust kinda sounds like-"huff-huff -huff-huff if said real fast,noticed that a vacuum tube was off from the valve that goes to the evaporative canister,,reattached but problem still exits,now I'm starting to notice a oder of sulfer/rotten egg smell,however there are times that it seems to smooth out when engine gets warm,im not sure where to look at next


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 20, 2014, 3:09 PM

Post #2 of 4 (1258 views)
Re: 92 Ford Explorer,motor running has huffing sound Sign In

That canister is to collect fuel vapor and burn it off in engine when told to. If hoses are off or not working perhaps it filled with too much and became raw fuel and now you smell that burning off of converters which isn't good for them but it all was right that should end and noise be gone.


Check for condition of hose and if canister is still wet with fuel. Not really related to the alternator IMO but may have been bumped in changing out alternator?


T



Discretesignals
Ultimate Carjunky / Moderator
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Nov 20, 2014, 5:51 PM

Post #3 of 4 (1249 views)
Re: 92 Ford Explorer,motor running has huffing sound Sign In


Quote
noticed a huffing sound from exhaust kinda sounds like-"huff-huff -huff-huff if said real fast


Sound like you are describing a misfire. Need to figure out which cylinder is missing and then determine why that cylinder is missing.

http://www.youtube.com/watch?v=PC6fuET3SUc





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Nov 20, 2014, 5:56 PM)


tiger88mm
Novice

Nov 20, 2014, 8:11 PM

Post #4 of 4 (1236 views)
Re: 92 Ford Explorer,motor running has huffing sound Sign In

exactly what is sounds like-i'll start with the spark plugs especially the one that I have been able to get to






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