Rough Start (1 Viewer)

[TurbineTester]

Truck has spit out the bank too rich error a couple of times recently but this morning it was rough starting and idling and I got a list of misfires from 5 of 8 cylinders.

I’m not sure if it’s related but I do have the Hewitt kit installed o bypass that code for the SAIV error. I’ve periodically usEd the aerosol MAF cleaner to clear codes related to that since the Hewitt install but this is the first time I can ever recall having actual misfires. Would love some knowledgeablei nput as we are headed out for a long road trip this summer and I have limited time to fix. Thanks in advance

 

[Trunk Monkey]

Sounds like a coil pack.

 

[TurbineTester]

Sounds like a coil pack.

I'm not super familiar with all those parts. Is there one coil pack per cylinder, or does a coil pack power multiple cylinders?

 

[Trunk Monkey]

One per cylinder. Many threads on the multiple P030xx codes.

 

[trdcorolla]

Your misfires are all on driver side and the the furthest cylinder back on the passenger side. I wonder if your timing is off on the driver side and you have a bad coil on the passenger side (cylinder 8).

 

[TurbineTester]

ok, just seems strange to only happen that one time at startup and then has been fine since then. If it was the timing wouldn't that be a more consistent rough idel, error code situation?

 

[abuck99]

Swap your coils from left bank to right bank and re-try.

@jerryb has some experience with the Hewitt bypass trouble shooting and might be able to tell you if that has any connection to the misfires.

If not that check cam & crank position sensors.