Lly injector balance rates.

[Henry95]

I have 325,000 km on stock injectors. Noticed a louder injector nock so I check balance and #5 is 4.3 in park. The rest are within +/- 3. In drive it's up to 6.9 again the rest are within spec. Is it worth it to replace that one injector or should I park it and wait till I can replace all of them? I know I should just park it and at least wait for the one injector but my other truck blew headgaskets. Should have it done this weekend, is it okay to drive it till then or is there a chance of injector failure. I really don't want to wreck anything. Balance rates checked with my cts.


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[Burn Down]

If timing sucks or money is tight just change #5:thumb:

 

[Henry95]

If timing sucks or money is tight just change #5:thumb:

Thanks for getting back. Timing is very shitty.


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[Awenta]

If timing sucks or money is tight just change #5:thumb:

Agreed. Shit happens. If it were an lb7 my opinion would differ.

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[Henry95]

Well checked after supper with the girlfriend and 3 injectors are over 4 idling. The one really high one hit 8 in drive so it will be getting parked till I can afford injectors. Maybe I could get rid of the gf and afford them. Lol.
She actually pays for a lot of stuff since I am not working.


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[Henry95]

This morning there all good. The one that was showing high is 1.0 why would they change that much. Guess I should do a return test.


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[Burn Down]

Are you checking them under the same conditions? Coolant temp the same, in gear at idle?

 

[Henry95]

Yes. When they were really bad the motor was a bit warmer. Maybe 15c


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[Awenta]

Need to check with the motor at operating temperature.

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[Chevy1925]

And give us what the main injection rate is as well. then a list of what all the balance rates are

 

[THEFERMANATOR]

And give us what the main injection rate is as well. then a list of what all the balance rates are

I've preached this for years. Balance rates can all be within +/- 1 of each other, but if your fuel rate is 2, then that means they are all going out evenly is all.

 

[Henry95]

Need to check with the motor at operating temperature.

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Okay I will. Cts said cold.


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[Henry95]

And give us what the main injection rate is as well. then a list of what all the balance rates are

Okay. Really like all you guys help out and give knowledge when ever you can.


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[Henry95]

Those rates are way better than yesterday. Number five yesterday was at 5.4 and in drive at 7.8. Number 2 was 3.8-4.1. In drive it was about the same.

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[Henry95]

I've preached this for years. Balance rates can all be within +/- 1 of each other, but if your fuel rate is 2, then that means they are all going out evenly is all.

+2? Or does it matter -/+?


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[Chevy1925]

That -2 you see is most likely main injection timing, not main injection fuel rate. I don't know if the cts will shownit

 

[Henry95]

That -2 you see is most likely main injection timing, not main injection fuel rate. I don't know if the cts will shownit

Yes timing. I messed up will get the rate.


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[Henry95]

MIFR is 5-6


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[Henry95]

Now it is sitting at 8 jumping to 12


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[Chevy1925]

Have you tried ice picking the connectors?