Engine codes

[Coach73]

No power while accelerating, no wrench or MIL light, pulled codes, 0300, 0303 & 0307. Any ideal of what I need to look at or where I should start? Thanks. Coach.

[Coach73]

Anybody?????

[dhanna6powerstroke]

Cylinders #3 and #7 misfiring.

[mhatlen]

It's defenitley misfiring on 3 and 7 plus random misfires. Have you looked at the ficm values?
Is it more of a cold issue or all the time?

Start with batteries/ ficm values. Have you replaced the fuel regulator spring?

Possible you have some injector problems........rule out the simple things first.

[Coach73]

I do have the blue spring upgrade, batteries are new, this happened after 30 minutes of driving I noticed the reduction in power, I neglected to look at the ficm volts, and it's all the time now. Where is the best place to get rebuilt injectors?

[dhanna6powerstroke]

May not be injectors. Check the FICM first. Could also be injector stiction causing issue. Might be worth getting some Rev-X and trying that before replacing injectors

[Coach73]

ok checked my FICM voltages, KOEO 11.5 & 48, cranking 10.5 & 46.5, running 13.5 & 47.5-49. What do you guys think? Thanks. Coach

[dhanna6powerstroke]

Only thing you could do is take it and have a power balance and contribution test done to make sure.

[Coach73]

I made an appointment next Thursday with the dealer I bought it from, it's about 45 mins away, the local dealer couldn't get it in until after Thanksgiving. If it is injectors, where is a good place to get rebuilt injectors?

[dhanna6powerstroke]

You just gonna keep stock or go a little bigger?