It's bored .020 over with fibers pistons, .75 valve reliefs, 16.5 compression ratio, stock cam, grade C gaskets. But how would hat effect it if it cranks up fine after being plugged in?
Tuning big injectors
- Thread starter quinton
- Start date
It's bored .020 over with fibers pistons, .75 valve reliefs, 16.5 compression ratio, stock cam, grade C gaskets. But how would hat effect it if it cranks up fine after being plugged in?
ah but you did not ask IF he had any codes nor did quinton state if he had any
Not a single code sir!
plugging in should have no affect as all it is a hot resistor in a freeze plug that keeps the water warm around the block. it wont heat a block up in 5 min, hence why this cant be associated.
have you tried starting it on the stock tune?
Do you know the injectors are good? And does pumping the gas actually do anything, it's not carbureted. I do it to but I don't know if it actually does anything and just a mental thing.
Can you post a log of the truck sitting cold and you trying to start it? Just the standard 'DuramaxImperial' PID list is fine.
Injectors are good balance rates are +1/-1. Well I can sit there and not touch the pedal and crank on it for 30-40 seconds and nothing happen, then the next morning as I try starting it with a little pumping of the pedal as I crank it, it fires.
Maybe thats cause your bumping it the next morning. Besides balance rates, have you always had those injectors? Newly done? I had injectors with GM spec balance and 7 out of 8 were toast.
No I drive the truck each day. So nothing is different in the situation. Injectors are new, I don't see how injectors would be a issue if it runs fine after started.
No sir. I'll get a log and video of it Thursday. It will be sitting for two days without running, I will crank on it with no pedal, and not being plugged in, and log it. After it's warmed up it will start just fine.
need to see what if any the amp draw is on the glowplug line. i think i texted you that though. thats where I'd start.
My truck starts pretty good at 40 degrees with no glow plugs. It used to start fine when it was even colder out with my old tuning.
What is your rail pressure and pulse width at idle and cranking do you remember? What size injectors do you have.
I don't remember I think I still have the tune though. At the time it started colder they were 100 overs now I have 60's.