Starts fine revs fine but when your driving for about a minute or two it loses power and won’t rev over 2200 rpm’s and if you stop driving it revs

i had someone tell me that the efi on it might need to be retuned but I haven’t really ever heard of that can someone clear up what that means for me

https://www.fordforum.com/forum/attachments/new-member-area-5/3901d1708643077-need-help-86-f-150-5-0-73033585455__1164ef3a-e85f-4d23-a1c0-e91aa9dcdd00.mov

 

If you can , some auto supply stores will rent you a fuel pressure tester that you connect to the fuel rail and obtain fuel press rdgs..

At least we would have some idea of what we were after, without which we could wind up replacing a lot of good parts guessing.
Can you do that?

 

Tomorrow I can see if I can rent one but I tried once for one of my trucks and they didn’t have the connector for the rail

 

Check your 86 and it should be there if fuel injected.

 

I have a complete new pressure testing kit. I will take your suggestion and rent one to verify if mine is working correctly.

 

I have a complete new pressure testing kit. I will take your suggestion and rent one to verify if mine is working correctly