Why does my ford 5.0 engine still skip after i've tuned it up?
Why does my ford 5.0 engine still skip after i've tuned it up?
Likely because you didn't fix whatever is making it miss or skip in the first place.
This happened to me there was a dead rat inside… Maybe something is stuck
Which 5.0 - The Fox body Mustang push rod 5.0 or the Coyote over head cam 5.0? If it's a push rod engine, did you replace the coil?
What all did you have done to it? Engines require fire, compression, and air/fuel mix to work. If it is skipping then you can bet that at least one cylinder is not getting one or more of the three. If you did plugs and wires it could possibly be the coil or injectors. Check your plugs for black soot which would indicate that not all of the fuel is getting burned. Also if one of the pistons has bad seals it could cause low compression which could cause it to miss on that cylinder. Have a shop scan it for codes. I think you can have a place like autozone scan it for free but their scanner won't be as good as one at a shop.
It means that it's not a tuning issue.
You'll have to give a bit more info sorry.
Because you didn't fix what was wrong in the first place, nor was your diagnosis correct!
If its the 5.0 in the Foxbody Mustang, check the threads out in the link below. The very first thing that should be done on any 86-95 Ford is a code scan. You can extract codes from these vehicles with nothing more than a jumper wire, test light and use of the check engine light on your dash. The 1st link below will show you how to do this procedure. The check engine light does NOT have to be on in order for codes to be present, so pull codes before doing any other trouble shooting. The 2nd link below is the same website that's in the 1st link, but it lists all available thread categories. The Engine Management EEC-IV section is probably the best place to look for your issues. When you say skip, I assume you mean surge and not a misfire so search the threads for surging trouble shooting procedures.
http://sbftech.com/index.php/topic,2471.0.html
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