I’m hate to say it, but from the last post to now I did not drive the truck more than 5 miles. Now it is 2 months late for SMOG, and time for a tune up so I can enjoy driving it again!
I did the basics - oil, oil filter, air filter, plugs, cap and rotor.
One note for people searching in the future: the o-ring between the distributor cap and distributor was badly worn out, letting dirt into the engine. It is a bear to find in the Toyota catalog as it is incorrectly named a dust proof packing - but the part number is 19127-15021.
Oil change went as expected, but I did get a new tool recently called a form-a-funnel. I always hated how the oil would drain right on top of my differential, so this solves my problem.
When I got to the spark plugs, I did find all 4 to be very wet with gas. I thought it was odd because the truck sat for a week before I pulled the plugs. I am assumming this up to be a side effect of running slightly larger than stock injectors- but maybe it is something else? I’m unclear. The truck otherwise runs great.
At the same time I ran a compression check. All cylinders are within spec, and are within 14psi of each other - right where they should be.
In addition to the compression check I decided to use my inspection camera to look inside each cylinder. There is some rust build up above the top of the rings on the cylinder walls, but it all appears to be normal.
With this work complete, now I can find out if it passes smog!