TurnedUp

[Harrison]

#1 injector. Switching it w #2 to see if the problem follows.

[Harrison]

#2 injector

[Harrison]

Injectors #1 and #2 swapped and worse. #1 was the original problem cylinder that made no difference in cracking open before I started today. Now, cracking either one makes no difference and it definitely runs worse than before.

When #1 is cracked, fuel dribbles out. When #2 is cracked, fuel comes spraying out pulsating.

My logic tells me that a fuel delivery issue somewhere on the #1 delivery system damaged the #1 injector (from running too hot or something?)

[mr.mindless]

Sounds like the cleaning of #1 didn't fix that, and something with #1 on the pump side as well. I'd pull delivery valves and swap em. Look for broken or stuck parts - esp as in that thread you posted yesterday.


Tapatalking in traffic

[Harrison]

Will try cracking the line at the pump. If nothing there either, I will pull the DV's.

I can swap them back and forth? Read some thing about not swapping them as they were toleranced with the pump? Seems weird, forgive my ignorance.

[mr.mindless]

I know it's a common upgrade to swap DVs for larger ones, so it can't be that critical? Chad's a believer in full cut valves, and I can see that. I really don't understand the point of them. I would like to know more, but haven't researched them.

[Harrison]

http://www.bostechfuel.com/injectors.php?id=DE891

http://www.fuelinjectorwhse.com/injectors.php?id=DE891

$300 shipped after core charge.

One other things: am I damaging anything by running it with the bad throwout bearing? I read something about scoring the transmission shaft or something? I'd like to get it running right before I tackle that.

[mr.mindless]

throwout doesn't spin unless the clutch is in.

you could score the shaft with a bad pilot bushing/bearing

[Harrison]

Well, it still squeaks a tiny bit even when the clutch isn't in.

I need to research basic clutch assembly drawings so I can understand this I guess haha

[M4wdFab]

thrust bearing the slides on trans input


when you push in, the bearing pushes agains the fingers on the clutch to release the spring force on the plate(s)

[Harrison]

Gambled and spent $60 on the 50k mile injectors. Runs 95% better. Delivery valve on #1 is leaking a decent stream of fuel so I'm guessing that cylinder is just a little down in pressure. Pulled it off and the o ring is chewed up.

Test drive was night and day better than Sunday.

Drinking a beer now.

[etk300ex]

nice\

[mr.mindless]

Those o-rings suck, almost never go through a removal. about $1.50 from Cummins IIRC. I'm thinking I should have a spare or two but I haven't seen them in months, no clue where they are.

Great news on the injectors. great great.

[Harrison]

Very relieved!!! Wish we could have found someone down south selling some $60 injectors and spent 2hrs putting them in instead of countless hours diagnosing weird things and smogging everyone at the campfire out

Also, I can now stand next to the tailpipe without my eyes burning. Pretty sweet!!!!!! 

[mr.mindless]

Hell, that's a double-win!