Did it!
Been battling misfiring cylinders and loss of power for some time now. Engine would lose power and seemed to hesitate around 2000 RPM, mostly while going up hill but also while trying to accelerate. The truck threw a code last Monday (CEL, VSC Trac, Trac Off light came on) while I was driving home. Aside from the aforementioned loss of power and hesitation, the truck drove fine. When I got home I re-tightened the gas cap and disconnected the battery to reset the ECU. I also ordered parts from Amazon (NGK plugs and wires, PCV valve and grommet, fuel filter) to hopefully fix it once and for all.
The lights came back on last Friday, again during my drive home from work. The guy from Autozone who pulled out the codes say it's P0300 and P0303. Fortunately, the parts I ordered also arrived that day so I scheduled to have the truck serviced yesterday (Saturday). As fate would have it, my trusted mechanic's shop was closed when I went to take the truck for repairs. I need the truck to get to work on Monday, so what do I do? I said F@k it, I'm gonna do it myself. How hard could it be? (Cue in "Jessica" by Alman Brothers Band ala BBC Top Gear)
Checked T4R for the Spark Plug and wire how to's and then went to Northern Tools and Harbor Freight to get the needed tools (Sorry, I am cheap and really short on funds at the moment). $37.50 later, I had all the tools I needed.
I re-read the write up and was soon dismantling my truck. I started by removing the air intake and then the plug wires and coil packs. I was in no hurry and was working very carefully so as not to break something in the process. I guess I was not careful enough because I still broke the retaining clip of the wire harness that connects to the coil pack closest to the PCV valve. Oh well!
I found that the plugs were actually installed not tight at all, almost just finger tight. They were all twin ground Densos and in pretty decent shape so the previous owner must have changed them before (I did not get any maintenance record from previous owners).
After I was done with the passenger side, and before moving to the driver's side, I decided to do the PCV valve. The valve itself came off easily with just a little prodding. The grommet however is a different story. It started crumbling as soon as the needle nose plier came to within an inch of it! As mentioned in the write ups, I cut a slit and attempted to curl it up and lift it out of the hole. Well, the freaking grommet (or what was left of it after parts have crumbled) had other plans. It fell into the bloody hole and disappeared! In my desire to work in the shade, and in true shade tree mechanic fashion, I parked the truck facing a bit uphill. As soon the the grommet fell, it rolled backward and out of sight. I stopped, hit my head a few times and proceeded to look for something I could use to get that stupid grommet out. I saw a really skinny precision screw driver in my pile of tools so decided to try to use that. A few minutes and good number of oriental words later, I had the thing in sight again. It was smooth sailing after that.
The driver's side is no more difficult to do than the passenger side. I read in the write ups that a universal joint for the sockets extension is a godsend so I got one. It really made the job easier. Like in the other side, all the plugs were pretty loose, almost just finger tight. After all the plugs are in and properly torqued, I removed the wires one by one, installing the new ones as I go.
Before starting the truck, I checked and re-checked everything, making sure all the hoses and wires are properly connected and secured, and that there are no extra bolts or what not. I closed my eyes, took a deep breath, turned the key and started the truck. It came to life in one try. Awesome! I am good! I broke into my celebratory dance routine and danced my way around the truck. When I got to the front, I looked at the engine bay and EGAD! smoke is pouring out of the passenger side, coming from just below the Transmission dip stick bracket. Something leaked and dripped onto the exhaust manifold! I turned off the engine and pulled the inspection mirror out. Uh oh, looks like I need to do the cylinder head cover gaskets soon.
All in all, it took this newbie shade tree mechanic just a little over two hours to do the job. I wiped down the leaking oil and restarted the truck and the smoke did not come back. I went for a short test drive and everything seemed ok, truck now accelerates without hesitation and felt smoother with a bit more oomph. Before disconnecting the battery to clear the ECU, I had the codes checked once more. Guy says P0300, P0303 and P0442. Small EVAP Leak, hopefully it is just the gas cap. I disconnected the battery when I got home and reinstalled it after an hour or so. I guess I will find out tomorrow if I am successful or not.
I drive at least 120 miles to and from work each day. I've only had the truck a little over 4 months and I've already put in at least 12,000 miles. Odometer now stands at 152k.