Join Date: Mar 2004
Location: Paola, Kansas
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Re: Why does my Sammy run better in warm weather?
I'm running 5w-30 oil. The light oil made a noticeable improvement during the cold weather. But my power has shot way up with the warm weather and the same oil.
When the power first dropped last winter, I found black deposits in the tailpipe. I changed the plugs, even though they did not look bad, like maybe a slightly rich condition with a little oil burning too. I put Bosch plus 4s in the thing, and put on a Bosch super coil (stock case style). The new ignition added slightly noticeable power and the motor ran smoother. I discovered the Oxygen sensor in the exhaust manifold was fouled badly with black soot. I installed a new Bosch sensor. My power and gas mileage increased, but the warm weather has made a
large improvement in both power and gas mileage.
One other thing, this is a no brainer. I found that bolt under the gas petal had back way out and was limiting my WOT. I removed the bolt and gained power, but that was during cold weather. Now my Sammy really scoots compared to what it used to, especially when the outside temp is 60 or higher. It seems like from 60 degrees on down, my power drops off, the colder the temp, the less power. Also, like I mentioned, the fuel consumption goes up as the power goes down and it seems like the loss in efficiency is caused by cooler temperatures. Any more ideas? Thanx for helping me!