Thread: 78 Trans Am getting some love

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The 13-14 is at cruising speed and it will climb going up a slight hill or just giving it a little gas. It comes right back down again when you give it a little more gas. I don't notice anything except for the gauge climbing.Cruise rpms are 2500-2700. I had the pump on the slow hole and I have it back in the center one now, is that used during cruise? I got a pic of a very white plug. It was just starting to brown a bit at the tip, can't see it well in the pics.

Originally Posted by 53 Chevy5

The 13-14 is at cruising speed and it will climb going up a slight hill or just giving it a little gas. I don't notice anything except for the gauge climbing.Cruise rpms are 2500-2700. I had the pump on the slow hole and I have it back in the center one now, is that used during cruise?

Accelerator pump is not active at steady cruise, but should come in as you give it gas. Moving it up a notch should stop the lean out as you give it a little gas, other wise cruise it great.

Originally Posted by 53 Chevy5

I got a pic of a very white plug. It was just starting to brown a bit at the tip, can't see it well in the pics.

Plug looks a little lean at idle (I like to see a full ring of color around the face), give it 1/8 turn more open on the idle mixture screws. Plug looks too hot, needs a colder plug.

What is your total timing set at?