Having trouble diagnosing why 1986 22R engine running real rough at idle and semi rough while driving. Diesels badly when shut off. Checked all the obvious; timing, all new ignition parts (cap, rotor, plugs, wires), fresh 91 octane gas, vacum lines appear ok (shot carb cleaner around... no leaks detected). Set valves to .008 intake and .012 exhuast (warm/hot).
How I got here... My son was driving and noticed engine getting hot. Well, it was the known Toyota 22R problem whereas the timing chain breaks the guide then starts chainsawing away at the timing cover until it breaks the water jacket wall. Yep, oil in the water and water in the oil. Sent the head out and had it rebuilt anyway. Put everything back together and now we have the dieseling at shut down and the rough idle and rough (slight) while driving.
One of the things that I noticed when tearing down the motor was the mixed oil & water got sucked up by the PCV into the carburator. There was chocolate milk all over the throat of the carb. It took my son and I about 4 weeks to get the engine back online and I'm wondering if perhaps too much time lapsed letting the milk sit in the carb.
Timing 0 degrees at 950rpm with distributor vac lines plugged off.
There is no smoke.
Engine has good response from idle
Engine has good power while driving.
No noises apparent
Exhaust is clean
So if anyone has had a similar experience and found a solution I would really appreciate hearing from you!
Thanks.