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Old 07-02-2003, 05:40 PM   #1
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Lightbulb Bad Smog Pump?

I have a 1985 270 MH w/ 65k miles, I have replaced the fan belt 4 times on the alt/smog and finally think they have it right. turns out the smog pulley was missing. Now I get whining noise when I accelerate and stops for a moment when I left off the gas. Could this noise be from the smog pump? Also I know that the alternator is from a local parts house. My information that I got shows that it came with Lestek alternator and seperate regulator.. Any thoughts?

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Old 07-02-2003, 06:30 PM   #2
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1997 30' Excella
1983 31' Airstream310
Austin , Texas
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since it stops when you let of the gas, it does sound like a loose belt. Did that noise start right after the belt replacement or after you drove some miles?

1983 310 Classic Motorhome
1997 30' Excella Trailer
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Old 07-03-2003, 09:25 AM   #3
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bad Smog Pump

The belt is new with 150 miles on it. It may just need to be tighten. I am gun shy of over tightening. Thanks
Will give it a go
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