6.5l injectors clicking

[Trucker2k16]

Ok so i noticed today after truck has warmed up fully i had my hood open and could hear a slight clicking so I got my stethoscope and started listening around the motor to make sure I didn't have any valve train or internal problems when I would put them on the injectors I can hear them clicking opening and closing I did not ever realize that you could hear the injectors opening and closing at idle they are new Bosch injectors with 31 miles on them. Is that normal? I have no issue startimg cold or warm no white smoke a small slight blackish grayish puff at cold start that last 1 second tdco is -0.44 timing is 10.2 oil pressure at warm idle is 20 psi no hesitation im only making this post to see if anyone has ever noticed that before. Slightly touch the throttle and that noise is gone.

 

[Jaryd]

With only 31 miles on the new injectors I’m betting it’s probably just a little air. I would run it for a little while and see if the noise,goes away.

 

[Trucker2k16]

I think it might be air myself i did just have the injector lines off to replace with new ones and i think 2 are touching each other or the valve cover i think the only way to bleed the lines is to crack them open isnt it while running?

 

[Stoney]

Yeah crack them one at a time.. if you just change them you've got air trapped in your lines just got to force it out

 

[Trucker2k16]

Yeah crack them one at a time.. if you just change them you've got air trapped in your lines just got to force it out

Did that yesterday proably have to do it again though not sure if i cracked them long enough

 

[JMJNet]

At around 2000 psi, the injector should purge the air very quickly.

What kind of injectors did you put in?

 

[Trucker2k16]

At around 2000 psi, the injector should purge the air very quickly.

What kind of injectors did you put in?

Bosch from quadstar tuning it finally quit i did have a little air in the return off ip

 

[Will L.]

Yeah, bleeding is basically loosen nut AND wiggle the line until you feel the line move in the injector. Then crank or start. Once you get 3-4 times is “spits” fuel out from under the nut, tighten nut while engine is still being cranked over by starter or engine is running.

You have to purge out the air. I have seen guys swap a broken injector lines and a month later the engine is still misfiring. Air doesn’t compress enough to activate the injector and allow the air to escape.

 

[Trucker2k16]

Yeah, bleeding is basically loosen nut AND wiggle the line until you feel the line move in the injector. Then crank or start. Once you get 3-4 times is “spits” fuel out from under the nut, tighten nut while engine is still being cranked over by starter or engine is running.

You have to purge out the air. I have seen guys swap a broken injector lines and a month later the engine is still misfiring. Air doesn’t compress enough to activate the injector and allow the air to escape.

Thats how i did it while running i have no more air i guess i had a little bit thats why i was hearing ticking coming from them and yea i understand that you may hear a slight ticking from a engine at idle from valvetrain

 

[Stoney]

Was just looking at Leroy's web page for injectors...set of new Bosch ones for $400. So I'm curious if you notice much difference in performance and mpg with your new ones...(im Assuming there the same as the ones you got from quad star) since both are bosch

 

[Trucker2k16]

Was just looking at Leroy's web page for injectors...set of new Bosch ones for $400. So I'm curious if you notice much difference in performance and mpg with your new ones...(im Assuming there the same as the ones you got from quad star) since both are bosch

Actually yea i have i have the Marine ones from quadstar i think they did work to them when kris worked there i cant remember