crossover tube
 

I did my injector install and now it seems like I am leaking oil is filling up oh so slowly took me a while to notice but slight increase different color slight smell. I guess it's a problem with these tubes. Got a price quote 105 shipped for stock tubes and 305 for .093 tubes. Do I need bigger tubes? I am more than happy with the power of the truck it is a tow rig so I don't need any more power.

i'd stick with stock tubes, it might not be tubes tho. Did you change all the o-rings? i think that big one on the injector body is what separates fuel from crankcase oil.

Ya all the o rings got changed supposedly it is a common problem on these year trucks and they are the stock tubes. The tube connects to the injector above the big o ring so any fuel leaked there would be right in the valve train which is full of oil.

Or not, the connector tube is designed to leak around the inlet of the injector body, the return port is just above the feed port. This return fuel exits the rear of the cylinder head through a rifling designed for this purpose. If you have fuel mixing with oil, the o-rings on the body of the injectors are the issue.

when i did my injectors i did new tubes. they said if you dont the old ones might not seal and cause oil in the fuel.

"They" obviously are uneducated.

just what the guy at diesel injection service's told me.:humm:

well there is always that chance that when service is done some parts are tweaked or wrecked. i tell ya, when i did my injectors, all that was going through my mind, but it worked out with no issues.

I thought the seal that commonly failed was where the tube pressed into the injector? And isn't that right inside the valve train?:humm:

only thing there is the tip of the tube and the pocket in the body it seats in. as long as they're good you're cool, there is no seals/orings there to wreck.