[quote:97aa642a96="bigdbeer"]Engine Performance problem
1977 Ford E-Series Van V8 Two Wheel Drive Automatic 79546 miles
thi is a motorhome with a 460 I have changed the plugs ,wires .rotor cap, and rebuilt the carb. every once in a while on the highway it will lose power and then backfire and I can't figure out what causes thiis. can you help with any sugesstions?[/quote:97aa642a96]
Hello,
There are two kinds of back fires, one is produced from the engine air intake and the other is produced from the tail pipe of the exhaust system. The cause for this backfire condition can vary depending on the malfunction of a particular system. Some backfires can be extreme enough to cause damage to related components. Anytime a backfire is observed immediate diagnosis and repair is needed. If the engine is running rough it can produce a backfire. If the engine is misfiring while it is backfiring please visit why does my engine run rough? It is important to observe the location of the backfire.
For more info please check the link below....
https://www.2carpros.com/first_things/why_does_an_engine_backfire.htm
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Jan 22, 2009 at 4:43 AM
