MrMarty51
Well-Known Member
And with the injectirs in my engine set at about 1950 PSI, that makes them rattle even louder.
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My 93 having a mysterious tapping or knocking under acceleration that comes and goes
- Thread starter dbrannon79
- Start date
dbrannon79
I'm getting there!
I suppose rebuilding some injectors are next on the list. though it's gonna be fun getting this turbo off to get at the passenger side.
I'm curious if an injector noise or knock can come and go like this and be mistaken for a lifter or knock.
I'm curious if an injector noise or knock can come and go like this and be mistaken for a lifter or knock.
ak diesel driver
6.5 driver
It can come and go. It can be loud enough to sound like a rod about to exit the block
dbrannon79
I'm getting there!
Welp, I guess I could attempt to remove the turbo. I will get the intake and all buttoned back up today, then see if I can get a set rebuilt and ready to go in. been wanting to do that anyway. idk the condition of the injectors that are on this engine or how long they've been on it. I would assume they were installed used when this engine was put in or were on it when it was installed. given all the used injectors that I was given with the truck, I believe it was all put together on the cheap. sounds like something I would do LOL
dbrannon79
I'm getting there!
Back at it today. Started off by rebuilding a set of injectors we’ll see how this goes.
dbrannon79
I'm getting there!
Finished up rebuilding a set of injectors and got them installed. That went surprisingly too well! After removing the IP lines and getting them out of the way I was able to get all 8 removed and installed without having to pull the turbo!
I have all 8 old ones laid out on my bench to test later but curiosity was getting me so I chucked #6 on the tester and it blew its load at around 1500 psi!!
Now to get the IP lines back on and button up the rest of the engine.
I have all 8 old ones laid out on my bench to test later but curiosity was getting me so I chucked #6 on the tester and it blew its load at around 1500 psi!!
Now to get the IP lines back on and button up the rest of the engine.
dbrannon79
I'm getting there!
Well it runs.... I had did a video of it running with my phone even revved it half way to the moon and back a couple of times but unfortunately for what ever reason my phone didn't record it. this new iphone 15 must not like me that well!
good news is it idles smooth and while revving it up guessing up around 3500 I don't hear any knocking or ticking sitting in the driveway. it does seem to be clattering slightly louder I think due to the injectors are now at a higher pressure or set where they should be at. I also stood on the brake, dropped it into gear and hit the go pedal. LOL it overpowered the brakes and lurched forward!! I wasn't expecting that and about knocked all my tools off from under the hood LOL
I will take it out tomorrow sometime and see if that noise re-appears.
also want to run all the old injectors I removed through the pressure tester to see what they were doing. I did test the one from #6 and it popped off at 1500 psi so not sure if low pop pressure would attribute to that. maybe the weak pressure might have been causing them to leak some at the wrong time causing a cylinder knock? idk but time will tell.
what's that old saying? idk if it's fixed but it's different!
good news is it idles smooth and while revving it up guessing up around 3500 I don't hear any knocking or ticking sitting in the driveway. it does seem to be clattering slightly louder I think due to the injectors are now at a higher pressure or set where they should be at. I also stood on the brake, dropped it into gear and hit the go pedal. LOL it overpowered the brakes and lurched forward!! I wasn't expecting that and about knocked all my tools off from under the hood LOL
I will take it out tomorrow sometime and see if that noise re-appears.
also want to run all the old injectors I removed through the pressure tester to see what they were doing. I did test the one from #6 and it popped off at 1500 psi so not sure if low pop pressure would attribute to that. maybe the weak pressure might have been causing them to leak some at the wrong time causing a cylinder knock? idk but time will tell.
what's that old saying? idk if it's fixed but it's different!