hey there Just today my ke35 with a stock 4k in it started to do the same thing it is like someone is lightly blipping the accelerator and it was stalling.
but i turned the idle up so it wouldnt but still very up and down.
I drove it on the freeway and when i got off and now the exhaust sounds like a tractor so I'm guessing a gasket or something was on its way out and it messed with my fuel mixture and now its finnally gone do you think this leak is the problem? cheers