92 4Runner lack of power

How did you set ya timming? Did you bridge out the shorting terminals like in the book or just grab a timmign light and away you went?

I set mine by ear last time as the light was playing up. Got it checked by mechanic a month later and it was perfect. I know, I know lucky guess right.

Have you checked your compression? Are you using water? Is there bubbles comming up through the radiator when the caps off? Is there any blowback out the oil filler cap? Are the plugs correct? Correct gap?

Sorry its a 3.0 V6, 32"tires, Compression ok,110psi highest 105psi lowest.

Who says 105-110 psi compression is OK? It should be around 170psi. Check your compression tester. It's that or something is very wrong with that engine.

The compression reading just shows there is some engine wear, normal for an engine with 157,000 miles! The thing to look for is one cylinder to be drastically different from the others, which there isn't. The compression is OK! Look somewhere else. Bad spark plugs, plug wires, distributor cap. Yes, it's possible to buy a bad new spark plug, it only needs to be dropped once to crack the insulator and cause an ignition short. Have you had the igniter or ignition coil checked? Most parts places will check these for free.

Some engine wear? A 60psi (170 down to 110) is a ton of wear. At around

If the engine is in fact at around 110 psi compression, then the rings or valves are shot. I am really questioning if the compression tester is bad since all cylinders are around the same level. Normally, you will see one cylinder go fist and loose compression.

And 110psi is not normal for an engine with 157k miles unless it's been run without an air cleaner. I have 337k on my 3L engine and the compression is around 160 psi.

I suggest Mudduck have a dealer to a second compression check.

I was going through the same thing, and replaced plugs,cap,rotor,pcv and then finally a new fuel filter helped