2CarPros - Car Questions & Answers

1972 Ford F-100 Repair Question


Topics covered: Fuel pump, Vacuum leak.
Mileage: 86 miles.

Asked on July 26, 2012

My ford 390 with a holley 500cfm sputters badley when under a load and acceleration. but idles fine. any ideas

Changed acelerator pump. messed with timing advanced to retarded no help,
Avatar Asked by rosscog

Answer

Replied on July 26, 2012

Check to make sure the accelerator pump is working properly. Make sure there are no vacuum leaks, make sure the fuel pump is supplying enough fuel.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided