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4.7 New Build Seems Low on power runs rich
Posted: December 24th, 2017, 7:43 am
by Rbethel
Just installed a 4.7 Stroker in my 05 LJ. Seems to run very rich and low on power. No backfiring seems to idle fine Thanks
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 24th, 2017, 6:01 pm
by SkylinesSuck
Not even close to enough basic information to diagnose. How do you know it's rich? What injectors are you using? What cam? Did you sync the distributor? Did you build the motor yourself or buy a long block? Do you have anything to tune with?
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 27th, 2017, 2:37 pm
by Rbethel
I purchased off of 505 performance. 27lbs injectors. I did Tex on opda and I do not have software to tune with
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 27th, 2017, 2:38 pm
by Rbethel
Complete long block. I do not thinks it’s rich anymore but definelty has less power than factory 4.0
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 27th, 2017, 6:14 pm
by SkylinesSuck
27#? I think that's too big unless there is something different about your year and fuel pressure or something. Why did you think it was rich before and no longer think so? You are not making this easy. What do you mean you did tex on the opda? 505 has a TERRIBLE reputation on here fwiw.
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 27th, 2017, 7:22 pm
by Rbethel
I will get a wide band on it. Seemed rich at first just because I’m without cats now. Seems to drive like I’m hauling a trailer.
Re: 4.7 New Build Seems Low on power runs rich
Posted: December 27th, 2017, 7:23 pm
by Rbethel
As far as the opda. I did not hook a computer to it and align I just did the tdc method