Multiple misfire on a 96 ranger

[dlevi2121]

Really could use some ideas here my 4.0 ohv runs great when it’s cold and idles beautiful until it warms up then it runs like hell I’ve replaced the coil pack,wires,plugs the distributor thing on the back of the engine tps and it still runs like hell once it warms up Amy ideas guys? Oh to make it worse the scanner is not telling me anything besides the multiple misfire I have a complete engine I just pulled for parts that runs fine so I can rob whatever I need off of it

 

[rusty ol ranger]

Injectors??

 

[dlevi2121]

Injectors??

I was leaning towards that but wanted to get some other options

 

[bobbywalter]

Buy a vacuum gauge. See what it's doing.

When it loops out it's not seeing things it likes.


What did the plugs say about the situation??.

 

[dlevi2121]

Honestly I can’t remember it was a side project I threw a new set of motorcraft plugs in it and just went on to something else it’s not been a big rush to fix