Truck has a bad miss when it's cold

[mind if I smoke]

First off I want to thank all the members and venders on here. If it wasn't for you guys I could have never done this. I finally finished my 6.0 budget build. truck was studded and deleted when I bought it but the guy didn't deck the heads. So we did the heads, sump, pump, r&r, oil cooler, hpop, 180/75 RCD injectors, and a powermax with a ww2. Matt did my tuning and after a fruck on my end we got the truck running like a bat out of hell. Sadly, when the truck is cold it still runs really rough. The closer I get to running temp the better it gets, but when I first take off in the morning it fells like I'm missing two cylinders. It's bad enough that my girlfriend said it looked like I had hydraulics when she followed me the other night. What could be causing this? We checked all vitals and connections. Any help would be great:bowfast:

 

[JGman141]

Sounds like injector stiction to me

 

[mind if I smoke]

I have less then a week on the injectors.

 

[Dave]

Check FICM voltage. Injectors built from cores or new?

 

[Derkperk]

Check FICM voltage. Injectors built from cores or new?

Yeah yeah yeah. :whs:

 

[mind if I smoke]

Injectors are from cores and I just installed the ficm around six months ago. It has the 58 volt mod with an atlas 80 tune, but I will check it tonight to make sure.

 

[Mdub707]

Have you tried taking the FICM tune off? Shouldn't really be running it with the bigger nozzled injectors anyways from what it seems. Or you need to have the tuner tweak it to work with your setup.

Could be an injector sticking like others have said. Especially if built from cores. Maybe try adding a bottle of rev-x or archoil to see if it clears up any, just to prove it.

 

[mind if I smoke]

I will order some revx today and see if that helps. I can't take the tune off with out shipping it off to the guys that rebuilt it for me. Unfortunately I can't afford to have my truck down anymore then I already have.

 

[Mdub707]

Don't know anyone else with a stock tuned FICM? I believe all of Bill's FICM tunes have the mild inductive heating flash too, which should help greatly with cold starts. Have you talked to RCD about this at all yet? It is always a risk buying injectors built from cores, but I completely understand it from a $$ point.

I would be trying a stock tuned FICM if you know someone around the area with one... not super confident it will help you out, but it's easier than yanking injectors.

IMO, Archoil works better... and it's 1/2 the cost. Just saying. I know Jason @ GRacing on here sells both.

 

[mind if I smoke]

I haven't talked to RCD. I will give them a call. I am going to try some revx to see if that helps. If not I guess I will ship my ficm off and have it reflashed.

 

[Mdub707]

Shoot me a PM next week, I may have an extra I can send you to try out if you want to just cover shipping on it. See if it helps at all.

 

[Breaking Habits]

Hey man, whats your name so I can pull you in the system. We dont build out of cores anymore, only remans or your injectors. Which did we do?

Jared

 

[mind if I smoke]

that would be great. As I said I'm going to try the Rev X.

 

[mind if I smoke]

My name is Tyson Proffitt. I bought the injectors from a friend of mine. He got them from you. They only had about 15000 miles on them, but I sent them to you guys to have them gone trough and flowbenched.

 

[Mdub707]

Let RCD try and work something out with you first, then get a hold of me if you want to try a different FICM. Like I said, can't imagine it really being your problem. Have you verified the voltage on yours just to be certain? My guess would still be stiction, see what RCD says, they'll help you out. Keep us posted.

 

[mind if I smoke]

I am going to talk to river city. As far as the FICM I am going to test it tonight when I get home.

 

[Dirty_Stroke]

FWIW, mine will do the same when tuned on the Hercules and it cold outside. I turn it to Atlas 40 during winter and it doesn't do it at all.

 

[mind if I smoke]

It doesn't matter how cold it is outside. Today its about 65 and it still does it. It only runs right when its up to full running temp. Anything less and it will do it. It gets better as it warms up but it will not stop until it gets to temp.

 

[Dirty_Stroke]

Def sounds like an injector or two

 

[mind if I smoke]

Well the Revx doesn't seem to be helping. My ficm is putting out the right voltage so I'm thinking it has to be the injectors. Today it was about 38* when I left for work and it barely even ran. Just to leave a red light I would have to be at least above 1500 rmps just so it wouldn't stall. So I guess I am going to have to pay to have the injectors pulled back out so I can do something. I have call Jared twice and have not heard back. Any suggestions would be appreciated. I'm afraid once it gets down below 30* the truck wouldn't even run.