I’m wondering if anyone could give me some advice please on these 4e-fte engines, my engine was built just under 20k miles ago and recently it has spun a bearing on the crank, and I’m trying to get my head around why, when it was built, everything was done right, pistons/rings, Toyota bearings used, everything was measured right and all tolerances were correct, I used the usual millers oil to run it in, then always used 5w 40 fully synth Mobil 1 oil, I’ve always had a slight oil leak oil pump crank side, (seems most do) so I’m trying to figure out why this has happened, if anyone has go some answers I would be most grateful, I’m thinking of just sorting out the bottom end, and leaving the pistons in, as they only done 20k aswell all opinions will be answered thanks
Pat