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  #1  
Old 04-14-2012, 10:19 PM
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Join Date: Nov 2011
Posts: 24
Default miss and a backfire through the air box

94 e150 4.9. when i accelrate to take off i have a miss with a back fire going through the air box. i bought the van with this problem i drive it twice a week to deliver my sunday papers. pass smog with that miss too. it does have a miss once the van is almopst warmed up kinda like when i take off but it doesnt back fire through the air box. has anyone have this issue? thanks
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  #2  
Old 04-15-2012, 03:43 AM
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Join Date: Jun 2010
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Mileage ?
What kind of routine maintenance has been done ?
Plugs, wires, coil etc?
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  #3  
Old 04-15-2012, 09:00 PM
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Join Date: Nov 2011
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i bought this van with a bad steering gear box and had the clutch fan replaced. it looks like it has a fresh tune up by looking at the wires and distribruter cap. i have 256k and still doesnt use a drop of oil. motor really clean for this mileage.
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  #4  
Old 04-16-2012, 06:24 PM
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Something we learn and sometimes the hard way, Don't take anything for granted check the plugs for gap etc. also the timing. Just because they look new has fooled many a careless tech. Check everything, then you know where you stand. Look for vacuum leaks or cracked vacuum hoses. Backfire in the intake is usually caused by a lean condition.
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  #5  
Old 04-17-2012, 11:29 AM
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i just hope its not a bad valve.
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Old 04-17-2012, 11:29 AM
 
 
 
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Tags
94, air, airbox, backfire, backfiring, box, e150, ford, hearing, intake, miss, steady, v6, van, xlt

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