need input from 5.0 guru's

[ksteversn95]

so here it goes.. Over the last few months i did a build in my 95 coupe, HCI fuel rails dizzy coil fpr gt 40 intake. im running stock fuel pump and injectors as well as maf. The problem i am having is that it is running rough. Ive searched forums and tried everythng suggested. Ive tried timing, reset idle with iac unplugged. new pushrods that i used a measuring tool adjusted fuel pressure. checked grounds. Im kinda newbie at building engines so any help would be appreciated..

 

[AdirondackFox08]

Hmm, idling rough or just runs rough all the time? What cam do you have in it? Also, have you checked for codes? I've heard that the 94-95 mustangs are more finicky to upgrades like hci than the 87-93s, a tune would probably help things out.

 

[ksteversn95]

it sounds like its running ok at idle but when i try to drive it has no power and runs rough. the cam is a comp cams 291ah. Im not that experienced with timing but i believe i have a good base timing. I just sprayed some carb cleaner around the intake and injectors and on one injector it seemed to change the idle a bit but i dont see any fuel leaking from it.

 

[AdirondackFox08]

I would double check the timing first with a timing light and go from there. You didn't get any codes? Even if there is no cel on, you can still have some.

 

[ksteversn95]

got it !!!!! kind of embarassing, but i went over everything again including firing order and its seems someone switched 2 of the wires :smash:. it runs awesome now and really shits and gets. No im ready for my 408 build.. give me a hell yea!!!

 

[AdirondackFox08]

Lol, it happens! Glad you solved your problem.

 

[billmustang91]

Stock fuel pump and injectors? I have 24lb fuel injectors. The stock fuel pump on my 1991 was barely enough for any mods. Just putting in a upgrade in the tank improved power. Then I put a second inline pump for the supercharger.