Not staying running!! Idle adjustment?

Diesel1277

New Member
Sep 26, 2019
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Tolland ct
I have a 1991 5.0 302 that I swapped into a 1995 bmw shell, I have the mustang ecu running the engine so everything that needs power should have it. I’m looking for things to check please. I have the ignition timing set close but have not set it with a timing light so that may be my issue itself, the engine has aftermarket internals mainly through ford racing and trickflow, everything except the crank shaft has been replaced I have .490 lift on the cam so I know it won’t be smooth.. anyway I have plenty of fuel due to putting a walboro 525 fuel pump and larger 18lb injectors. Anyway you guys would be able to shoot ideas as to why I can run it ok for about 2 minutes until it wants to die at idle? I can keep it running if I keep it above idle
 
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General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
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polk county florida
Welcome to stangnet
do you have the diagnostic port? Is the spout there?
pull the spout and if it will idle, set the timing
check for vacuum leaks,we will start there.
 

Diesel1277

New Member
Sep 26, 2019
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Tolland ct
I do not have a diagnostics port just the computer which has made my journey a struggle already lol, I will set the timing with a light but correct me if I’m wrong but I thought I saw you should get it warmed up a little before setting ignition timing? I have replaced the evap vacuum lines coming off the intake (I have a gt40 upper and lower intake ported by tmoss) and tried to go through the rest of them and replaced all that I could see. Although I just came across a breather that goes from my upper to Lower intake I believe I’m not quite sure what it is to be honest I will post a picture
image.jpg
 

Diesel1277

New Member
Sep 26, 2019
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Tolland ct
Ok I’ll look to clean that and put it back in, if that is not the issue do you think having the 525gph fuel pump is too much for the stock fuel regulator?
 

Diesel1277

New Member
Sep 26, 2019
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Tolland ct
No, the stock 30psi regulator and for some reason my fuel rail doesn’t have a shraider valve to see what’s flowing through so I might have to tap in just before the rail and see what the pressure is. I still have not gotten to timing it with a light but I have the weekend off so we’ll see how it runs after that and cleaning the pcv, I have that to one of the ports on the upper intake I don’t know if it matters which port?
 

Diesel1277

New Member
Sep 26, 2019
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Tolland ct
It wasn’t bad at the valve end but getting it back on the upper intake will be a pain due to the port being behind and under
 

tsiemens

my welding skills arent really skills
Jul 14, 2018
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ontario
my vacuum lines going under the intake are shot anyway but for a few months I've been torturing myself with figuring out how to change that
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
13,526
4,267
193
polk county florida
Just pop the upper off, easy peasy, makes for quick work on the vacuum lines, pcv and the screen. The grommet is likely shot too.
this may help
 
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tsiemens

my welding skills arent really skills
Jul 14, 2018
111
22
28
41
ontario
I eliminated my egr just today and i finally see the pcv. Next time they should bury it under more crap....