[Newbi] First time poster [Solved], Already I need help Options

[Chanassa]

Hi everyone, first time poster with a keyboard in the other end here, and of course I have a problem.
I got my Celica ST20 1.8 one week ago, a good car and I like it a lot already.
Unfortunately the motor don't run on all four cylinders when it's on idle and hot.
When the motor is cold there is no problem at all, and same goes when I'm revving it, all four is on board and do their workload as they should.
I have found out that it is cylinder number four that is the problem, and tho whole motor have been taken apart and reassembled, we cleaned to cylinders, and pistons (Also the pistonrings, they were stuck and I thought this was the problem) but this didn't help.

I have now bought an used top to this engine, but do you have any tips for what this can be?
Thanks all.

This post has been edited by Chanassa: Nov 25, 2013 - 1:00 AM

[Poonicus]

It might be a problem with the wires, dizzy or the cap. Go to the junk yard and find an wreaked car with the 3sfe motor in it and pull the dizzy out. Go to your local auto store, o'reilly's or something and get a new rotor they're only like 2$ and check to see if there's any blown fuses or relays. You can find out how to test your relays on google. Make sure that AM2 and ecu are fine. The am2 is a 30amp fuse and the ecu is a 15. Could also be the ignition coil inside the dizzy, but then again this is speaking from my expreience with my 5sfe motor, haven't work on a 3sfe yet..

keep us posted.

This post has been edited by Poonicus: Nov 22, 2013 - 12:09 PM