bleeding injectors
 

ok i put a airdog 150 on my truck the other day and i went to bleed the air out. when i did this i see fuel comeing out but no start:argh: i was woundering how much fuel should i be seeing and how long it takes to start. and what was the best way that yall got ur cummins started.

when i put mine in, i just bumped the starter a couple times with the banjo bolts loose on the side of the VP44 until fuel seeped out around it, tighten up the bolt and it fired right up.

i bleed #1 3 4 injectors and still no start could it be my IP? And i have a check engine light again so im going to check that out my last codes where P1693-p0237-p0121 could any of these codes cause my truck not to start.help please:argh:

the 1693 code is not a good code it envolves the injector pump

is it possible it threw that code b/c of a lack of FP to the pump since he opened up the fuel system? if he just put an airdog on he should be able to turn the ky on and crack the banjo bolts up to the IP... after that just go down the line and crack one loose; crank it for a second or two, close the line, and proceed onto the next one... it probably wont start until you get to #5... once running just go back down the line and make sure its squirtin fuel on all 6 and not bubblin..

I would side with Tower on this. If it was running before ok then your IP should be fine. I would do it in that order: Start by bleeding on the inlet of the IP. Then on each injector. Shouldn't matter which ones you do first to last. I would think you would get a better bleed if you have help cranking. Kind of like bleeding brakes. If you have too much air in the line your injector can't fire! With help, you can crack a line and get all the air out and tighten it back down. You might be able to do a couple or more each crank 'session'. Crank about 30 seconds and then let the starter cool for about 2 min. I would bet it will start before you get all 4 bled!! I put an older 12V back together and it tried to start with just 2 cyl firing!! It did with 3!! If your engine starts but won't smooth out like normal, go ahead and bleed the last or remaining lines. Getting all the air out should have it purring like normal!!
Let us know how it turns out!!
Dan :5:

my truck wasnt running befor this happened it died on the road before that is was sputting and stuff so when it got to my house i took off the banjo bolt and click the starter and nothing was coming out so i bought the air dog and it didnt fix it im going to get my friend code reader and see what is on there now. :argh:

sorry bud, but its tiem to shell out some money. if it died and u had no fule coming out at all at the lines right after wards, its time to buy a new vp44. sorry to give ya the bad news :(

i have fuel coming out of the lines when i bleed them how much should i see when cranking on it could it be a sensor thats not leting my truck start

just becaus eit has fuel coming out, dont mean it has enough pressure.