First post on this forum. Been lurking for a short while.
When it comes to 1KZ-TE's on North America, this the place to be! I need some help. I have a 94 LC Prado 1kz-te and my buddy has the same but auto. He has had problems with rough idle, when it warms up say after 5 minutes, it tends to smoke much more than it used too and it has spats of sputtering that shake the engine something fierce with lots more black smoke. On 1h8mud, there is a 70 series forum so I have posted for help there but there aren't as many 1kz-te experts as here so I hope you can help.
Here is a post on mud that captures what we have done so far. There are also a couple of video's that might help to hear and see the problem.
We have spent plenty of time diagnosing the problem. Have checked:
timing - checked ok
valve clearances - checked ok
EGR disconnected - no effect
engine sensors - checked ok
ECU pulled and sent to http://www.foreignecurepair.com/ - Check, repaired, no effect.
So it looks like the injection pump. The suggestion that has been tabled is to get a used kzt or 2lt pump and disconnect the ECU. My preference is to get a rebuilt kz-te IP b/c a new one is way to expensive!
Two requests (and thanks for the help in advance). First, anything else you can think of that might be causing this problem? Secondly, anybody know where I can get a rebuilt 1kz-te IP?