Hello everyone. I purchased a 2003 Ranger extended cab 4.0 XLT a couple weeks ago. I am having a problem with it missing. I have replaced the plugs, plug wires. Today I replaced the injectors and Intake manifold gaskets. I also replaced the thermostat. It seemed to be running warm. Somebody had replaced. I wasn't sure it was done right.
It is still running rough at idle. And it seems to be boiling coolant in the resivor.
I am wondering if I might have a blown head gasket. I don't see any signs of it in my oil. Nothing milky in there.
I thought I would post what I have done so far and see if anybody could help.
Thaks for any help you can offer.
Keith