b454rat
I'm Awesome
Can't seem to get rid of a misfire in my Yukon. I did full tune up, cap/rotor, plugs n wires. Plugs didn't look bad, but did em anyways. It has the miss at idle/low RPM, but smooths out the higher the RPM. It runs like a ****, so to me doesn't think it's a major issue. I was thinking it could be the spider, since PO had it since 01 or 02, (its a 99) and I had the upgraded spider from the last Yukon I had. Just got done putting it back together, and does the same ******' thing. I searched misfire, and says vacuum leak, but don't know where the leak would be around cylinder #4. I put a whole bottle of Seafoam in it, and it was sitting for a year maybe longer. But it fired right up when first looked at it. And think it's been cleaned out driving it up n down the road lol....