Re: Spark Knock problem???
My '90 was like that with 125,000mi. i had to follow semi's uphill on the highway to maintain 65mph. It was a 2.3L. It was worn out but still the best truck on the road. That truck is why I still drive a Ranger (which started chattering a bit yesterday).
2004 XLT 4.0 4x4, 3" PA body lift, 32" BFG M/Ts, Dick Cepek DC-2 wheels, Euro tailights, self-painted headlight mod, NAV/DVD/XM/iPod stereo (Pioneer AVIC-D3), Line-X, Westin step bars, AVS bug shield and window vents