I am new to this board. Just recently purchased a Picoscope. I have a 1988 Ford Ranger 2.9 that has a skip on cylinders 1 and 4. Other shops have replaced the usual things...plugs, wires, even the distributor. I have performed a compression check [OK], removed valve covers to inspect valve component...

Thank you for the reply. I will do that,Mike

OK. I have in my shop a 1988 Ford ranger with a V6 2.9 engine. It came in with a misfire on cylinders 1 and 4. The customer had replaced the plugs and wires. He took it to another shop and they replaced the fuel pressure regulator and the distributor cap. I replaced the distributor and the ECM. No h...