Why does it make a loud popping noise like a air riffle and it won't go over 25mph and it sounds like a motorcycle and smells like exhaust

Asked by Aug 14, 2015 at 07:10 AM about the 1999 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

3 Answers

49,145

Possibly a spark plug has blown out of the cylinder head. Check to see that all spark plugs are properly installed.

Best Answer

Ok someone said exhaust manifold

49,145

Could be that also, but exhaust manifold won't keep it from going faster than 25 mph.

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