Hey guys new here , ive got a 89 bj74 jap import had it for two months seems like a great truck so far , ive just got a question theres a rattling / grinding noise when im driving that sounds like its from the pto ? Its only there while in gear and driving an stops when you press the clutch also seems to get louder at higher speeds , and if you put pressure on the pto engagment lever while driving the noise changes or even stops ?? Any ideas what it could be ? Cheers guys .