22re misfire

[THE92TOYOTA4X4]

hey guys iv'e been having a lot of trouble tracking down this misfire i have at idle and when held at steady rmps. i have a 92 toyota with a 22re new oversized head from engine builders and low range cam. i have done vlave ajustments new cap and rotor plugs wires knock sensor MAF all new vaccume lines any suggestions would be greatly appreciated

[Slabzilla]

If you didn't check your manifold surface for flatness, it might be leaking at the gasket.  Spray some carb cleaner or starting fluid at the joint.  If it speeds up and smooths out temporarily, you found your problem.  Manifold leaks are a common problem if manifold is warped.  Did it miss before the new head?

[Mudder]

Check the TPS for correct adjustment. I had a misfire and it was because of that danged thing

[THE92TOYOTA4X4]

No this did not happen be fore the new motor when I re built the motor it would purr no hiccups or bogs just a solid tone originally the misfire was the valves. Since then they have fully broken in and are in spec the manifold is tight and leak free. I have never touched or replaced the tps

[Mudder]

I'd check to make sure its correct. The link iis one of the best write ups. Even if it doesnt solve your problem if its bad itll have a bad affect on your gas mileage. http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

[THE92TOYOTA4X4]

HERE IS AN UPDATE ON THE MISS FIRE ITS A RANDOM MISS AT IDLE BUT WHEN REVVED IN NEUTRAL AT ABOUT 2500RPM ITS CONSTANT I CHECKED THE TIMING IT WAS WAY OFF IT WAS AT 16 CHANGED IT TO 12 RUNS MUCH BETTER BUT STILL MISSES ALSO WHEN TRUCK IS WARM AT ABOT 3000 RPMS AT FULL THROTAL IT WILL CUT POWER BY AT LEAST 25% ANY IDEAS?