The 2RZ cylinder numbering goes from front to back. Cylinder #1 is the front-most and Cylinder #4 is the rear-most.But mine is also a 2.4L with Ignition coils aka 2004... Where do I start the cylinder count> front to back? Or Back to front? Gotta figure out cylinder #3 on my 2004.
I thought about it but My "Tacomie" has been placed back into service since it's my winter-beater... All my hotrods are now hybernating until next spring.Count starts at front. Typical is to swap plug and coil and see where misfire moves
Using the engine bay pic above ... But mine is also a 2.4L with Ignition coils aka 2004... Where do I start the cylinder count> front to back? Or Back to front? Gotta figure out cylinder #3 on my 2004.
Versus the distribution coil & plug wire set up shown in the pic...
A little history & new issue arose with my Tacoma:
I've installed new Denso Iridium spark plugs back in 2019 after doing it originally in 2014...
But still using the 17 year old original ignition coils. NOW I get a "P0303" / "Engine Mis-fire Cylinder 3"
Yes I will check my spark plugs but I believe it's the ignition coil now... I cleared the "CEL"... Truck drove normal but after three days of driving & roughly 150 miles the "CEL" has come back on...
Just haven't got a chance to connect the scanner since it got "cold" quick outside. Will do it tomorrow.
IF it's Cylinder-3 Misfire... Using the pic, which on is it on my '04?
I did a parts search... Using Summit-Racing website & a Toyota parts-site...
Summit Racing/Toyota-Tacoma 2.4L Ignition Coils
Toyota Parts 90919-02237
I figured I better keep with the OE parts... So I figured the Denso-version listed on Summit is the same as Toyota-OE right?