Ever see really loose mounting bolts on the 5.9 injectors?

[HerbW]

Hi.
Tonight I pulled all six of my injectors to install some other ones. I was surprised that half of the mounting bolts that hold the injector to the head were just finger tight. I put a socket on it and felt no resistance. Very strange. Ever hear of them vibrating loose? All of the loose ones are the rear bolt. I'm wondering if they torqued the rear one and then torqued the front one? Then never rechecked the front one.

Then the fuel line that connects number five was finger tight and appears to have been leaking for some time.

It took me just two hours to get all the stuff unhooked and six injectors pulled. That included intake, batteries, valve cover, valve cover gasket,all the lines plus injectors! Install will be slower as I do all the torque specs and procedures to make it right.

I studied the injector removal procedures on our great TDR Website to have a plan! Thank You! I knew wrench sizes too before getting started! PERFECT! I have all the torque stuff written on a piece of paper to speed it up!

I'm adding a new inline fuel filter once I get my truck running again. I decided do one project at a time in case sometime isn't right when restarted.

Any loose bolts found before? Thanks, Herb

 

[HerbW]

Hi. By the way, my truck is in my shop on a concrete floor. I covered the intake manifold with a clean shop towel in the hole and plugged each injector hole with clean towel too. I'll cotton swab out the injector hole and blow it out with air if necessary! I then covered the valve train with a clean towel. Looking forward in getting back on it!

 

[Prairie Dog]

I wouldn't blow into the inj. holes, I'd use a shop vac and suck everything out. With pressure you run the risk of forcing something down in there.

 

[p-Bar]

don't adjust the valves . As you stated one thing at a time. Curious what you are using for injectors as I am going to have to do mine?

 

[HerbW]

P-bar, it might seem funny but I'm putting in clean low mileage injectors from a friends truck that just put BBI high pro injectors in his truck. I installed new o rings and copper washer gaskets. He had one solenoid go bad and didn't know a fix for it and was sold a new set of six. I was going for new Bosch stock before this opportunity came along. Time will tell if I did a good choice. Loose bolts though makes me glad I took this on.

 

[p-Bar]

Ok this will be interesting . Will you do newcroos tubes or use the existing?

 

[HerbW]

I'm using existing. They look great with no damage to the tips. The owner of my truck before said these are the originals according to the original owner. Heck I'm retired and have the time and shop to try these out. I'm mechanically anal so I'll try it on as knowledge. The next time would be a breeze!

 

[sag2]

Was one bolt on each injector tight? If so it is normal. The hold down "rocks" and does not bottom down on anything on the head.

 

[HerbW]

Makes sense because the hold down rockers are up from the head. Thanks for the idea. I hate loose bolts though.

 

[Tuesdak]

"Then the fuel line that connects number five was finger tight and appears to have been leaking for some time."

Was this the fuel tube connection to fuel line that was "loose"? If so I've read the fuel tube needs to be replaced as well due to high pressure fuel cutting the threads up.