Log in

View Full Version : 2001 Honda Accord misfiring on multiple cylinders


specialeddd
Oct 27, 2013, 05:47 AM
I have a 2001 Honda accord 3.0L v6 that is misfiring on multiple cylinders. If I pinch off the fuel return line it runs fine again? So I replaced the fuel regulator and it did nothing back to misfiring again. Pinch off the return line and runs fine?

TxGreaseMonkey
Nov 7, 2013, 02:16 PM
Check for a vacuum leak, especially around the upper intake manifold (UIM). Also, only use the original NGK spark plugs that came in the car, gapped to spec.