1993 Rodeo 2WD 4ZE1/T5 CA Spec - 2016 RAM1500 Pentastar (22mpg) - 1986 RockZuk on Toyota Axles
I haven't opened anything with a gasket on it aside from the thermostat housing. I suspect it has a bad valve cover gasket, didn't want to get a cheap full gasket set just to have them all if I was going to have to do the head, didn't want to spend any more money on it if it looked like it might have a cracked or bad block because even a head gasket is a stretch for me. I have a gasket set on the way and just found my torque wrench, so I'll be pulling the valve cover this week. The later year vs the late 80s FSMs I have access to as well as all the CA spec extras crowing the engine bay made getting under the valve cover look pretty intimidating until I'd done a good amount of reading about these engines.First, have you checked valve clearance yet? if not:
From my experience, many, if not most of these engines are in need of a valve job. There is a post called "Head gasket" from a guy named Harry. It has some good information, Because you have two cylinders with at least SOME compression, you should be okay with a valve job.
When I started with my truck, it had one cylinder with ZERO compression. I did the valve job and head resurface. In the long term, I found out that from the P.O. driving the truck with the dead cylinder, the rings in that cylinder had worn because of the constant washing down with unburnt fuel, Dennis
I do have a couple questions... How much of the valve train is serviceable without pulling the head?
If I find a burnt exhaust valve for instance, is it possible to just swap that one out? Just trying to have any little stuff I might need when the cover is off either from Rock Auto or a junkyard. Someone definitely ran the "coolant sealer" with the metallic flakes at some point, I'm guessing it wouldn't take many of those flakes at all adhering in just the right spot to really throw a valve off, especially if they're way out of spec and the head wasn't torqued properly, is there any automotive cleaning sprays I need to avoid if I need to clean up the valve train?
Plan on doing timing belt, tensioner, disty rotor and cap, checking head bolts are properly torqued, replacing any bad seals I can access with the valve cover off, checking operability of the valves and setting valve lash, undeleting the smog pump and it's associated ECM controlled valve, ensuring there's no leaks at the exhaust manifold in one project day, THEN trying to fire it up again. Got some locksmithing to do in the meantime, wifey threw my pants in the washer while I was still in the shower scrubbing engine sludge off my hands and the keys haven't been seen since. Only one worked in the ignition and it needed to be jiggled first half the time, neither key locked or unlocked any of the locks anyways. New ignition switch on my 86 Samurai project uses an extremely similar blank to the Rodeo unlike the stock Suzuki key, gonna try and pull some tumblers and see if I can't get everything on both trucks down to one key. I'm to the point of just taking a Dremel to the small studs that stop you from popping the cylinder out of the lock.
For posterity If you have a 1993 (maybe 94 or 95.0 too), if you pop just the bottom steering column cover and jumper the black wire to the black and red, the fuel pump primes, if you jumper black to black and yellow the instrument cluster will light up and your coil should be putting out an intermittent spark you can also check codes here if you join the two DTC leads by your left foot, while touching those two if you jumper in that top black and white wire while those are touching you'll spin your starter and hotwire the car. I have the black and white wire bypassed and a momentary switch button, still trying to figure out if I need the wire that used to go to the starter solenoid attached to something for my fuel pump to stay on. I believe the little switch hanging out is supposed to make a beep noise if you forget to pull out your keys, I noticed the seatbelt light is inoperable if it's not engaged, might help someone that hates the "ding".