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"I would try to add the front fuel line to even out the fuel to your injectors." I'm not really sure what you mean by this????? I talked to the head mechanic at a large fire department today and he suggested adding ATF to the fuel tank to see if anything will clean up. He also mentioned...

Mine has been tapping for quite some time (possibly a year). Mine hasn't blown up yet. I only get black smoke if you stomp on the throttle or are trying to accelerate up a hill. If you listen to all the high pressure lines with a stethescope (with just rubber tubing on the end) you will hear all...

My number one injector line is also tapping (esp. when listened to with a stethescope). I swapped it with the number two injector. The number one spot is still tapping, also increases speed with engine rpm. I am beginning to believe that there may be a stuck check valve some where in the...

Its hard to tell, on idle maybe a light greyish with a touch of blue?

"if you listen too carefully, you'll think you hear something "abnormal" - Yea, thats where its tough to settle with yourself what is normal. The engine seems to run smooth. There may be a knock, but after listening to other members videos the consensus is thats normal. I have cracked the...

I have been giving this issue some thought and wonder if it is a chain of events. I think that this may all be related. I had a fuel leak at the #1 injector where the steel line threads into the injector. I replaced the line and noticed a pronounced tapping from within the line. Thinking...

Does anyone else have this noise on their trucks?

Mine is a steady noise all the time. If you put your hand on the return line you can feel it and if you crawl under the truck you can hear the noise all along the return line but not on the supply line from the in tank pump. Its probably nothing, just wanted to ask.

I've searched around and couldn't find anything on this. With the LDT running the fuel return line makes a pulsating vibrating noise that you can hear if you stand near the tank. Everything runs fine, does this noise seem normal, does anyone else have this?