What’s up guys. My first post as a ranger owner. I’ve always owned/daily’d my 86 f250, currently have it all apart restoring the frame and swapping axles. Anyways, I bought my 2000 4.0 ranger about a week ago and I love it, took it camping this weekend and it did fantastic. 289k on the stock motor and it doesn’t even burn oil.

I knew it needed a tune up because it would miss a little bit here and there along with some hesitation. But today I started it and suddenly I owned a 4 cylinder. Driving it was bucking around and everything. Had great power still, if you get on it it’ll kinda run fine and not. Depends. I cleaned the maf, idle control valve, and made sure all the intake nuts were tight even though it may still need gaskets. No codes. Passed smog 3 days ago. I ordered plugs, wires, fuel filter, and might get a coil. All motorcraft stuff.

Does this seem about right for a tune up? I’ve read a lot about the misfires and bucking, assumed it was ignition. I figured there’s some stuff I missed since I’m new to these little gassers.

Here’s my ranger and my obs lol. Thanks guys.

 

Start with dosing it with Techron before local driving. MAybe a fuel filter? You might get lucky.
How many miles did you do during this week?

 

I’ve put about 350 miles on it so far. Today I just did plugs and wires. Finewire motorcraft plugs and I believe the brand is called omnispark wires. All oreilies had and I didn’t want to wait a week for shipping. Fixed the bucking and misfire, it finally threw a code for cylinder 6. It’s running great now. Still going to do the fuel filter and some other stuff.