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White smoke in exhaust that smells like gas
#635105 September 11th 2013 9:54 pm
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It does this at start up and when I stop then start the van again it chugs and will sometime stall unless I put one foot on the brake and one on the gas. Once I drive it a bit it clears up but the van doesnt seem to have much power, I assumed that to be because its a 4.3 V6.
There is 120 pounds in each cylinder and the van has 166,000 miles by the way.
I have heard that this can be anything from a bad fuel pump to leaky injectors, I've had a 4.3 blazer with a blown head gasket and its not the same smell.
I'm trying not to be lazy about fixing this so I'm trying to see if anyone has any ideas or can point out something I missed.


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Mike Newkirk
1993 Chevy G20 Regency Conversion (a.k.a. "Heisenberg")
Re: White smoke in exhaust that smells like gas
Kosher #635106 September 11th 2013 10:06 pm
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I had an old explorer and when the fuel pump was on its way out it acted as you describe but the smoke was black if i recall. I would check the fuel pressure any how just for piece of mind.


94 Ford E150 4.9L inline 6 "Bad Company"
Re: White smoke in exhaust that smells like gas
Kosher #635108 September 11th 2013 10:16 pm
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Sounds like what my wife's E150 was doing last week.It turned out it was from unburnt fuel.Plugs were fouled and was only running on 5 of the 8 cylinders .

Someone with more knowledge then me should be able to point you in the right direction.Good luck.


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Re: White smoke in exhaust that smells like gas
Kosher #635109 September 11th 2013 10:16 pm
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Yeah, that's a good idea. I have a feeling that its the original pump and its probably weak.


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Mike Newkirk
1993 Chevy G20 Regency Conversion (a.k.a. "Heisenberg")

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