Bittle Auto Transport
New Member
This is my first post here so sorry if this issue is already posted. My 96 6.5 developed a knock noise last week while towing a heavy load in mountains. My first though was injector so I replaced all injectors. Balancer and pulley are new. The truck runs just as well with the noise but while pulling a load mpg went from 7.5 to 6, this led me to injectors . No miss or hesitation. It started while I was in Georgia. I drove home to jersey and noise stayed the same. Give it a little Fuel and you can't here it. When I first start it it's quiet for about 3 mins. Then the knock starts. Thanks for any help