New 4.7 starts but but won’t run over 1000 rpms.
Posted: September 20th, 2020, 8:31 am
I’ve just assembled my first Stroker in my 1989 XJ
I sourced my parts through Russ Pottenger. 7120 head.
99+ intake. BBK throttle body. Running the stock renix ecm.
The motor fired right up but hesitates and runs rough as soon as the throttle body is opened.
Fuel pressure holds steady at near 40lbs. I’m stumped all sensors worked well last week when I pulled the old motor. Any advice will be appreciated. Thanks in advance!
I sourced my parts through Russ Pottenger. 7120 head.
99+ intake. BBK throttle body. Running the stock renix ecm.
The motor fired right up but hesitates and runs rough as soon as the throttle body is opened.
Fuel pressure holds steady at near 40lbs. I’m stumped all sensors worked well last week when I pulled the old motor. Any advice will be appreciated. Thanks in advance!