Scotts_D250

Yesterday I was bleeding my injectors after doing the fuel filter and fss. When I cracked the ibjector it just bubbled and foamed should I suspect a bad injector pump?

big stinky

Is your engine running rough? Did it change when you cracked that line?
I have problems with air getting in my injector lines as well, people preach to me its my fuel system, but theres no way it can be, i have redone the whole thing with pushlock -8 lines/fittings and drawstraw, all the way to the ip.
Still dont have an answer, so im bumping this question.

JD730

Does your engine idle smooth? Run under a load smooth? Any unusual smoke?

Its very unlikely the pump is causing the aerated fuel, even it you had an air leak on the supply side, just the nature of the design, it designed to purge the air out the return.

I'd keep an eye on that injector, last time I had injector pushing aerated fuel it had a cracked tip.

autocar56

I have seen a bad injector do that also , you can crack all the lines and see bubbles or even foam constantly out of one of them. Its compression coming up from the injector, their is usually a noticeable engine miss thou

Scotts_D250

A bad injector really? before the truck the went down I had a serious lack of power and it felt like it was missing at idle. I just did the fuel filter and FSS, And noticed when i bled the injectors #1 injector just kept bubbling fuel and it never was a straight stream when i was bleeding it.... IT also only ran once after i bled it.. And it ran terrible... I cracked #1 and it foamed , so i closed it and tried #2 and then the engine died. I was thinking a Bad IP, but if its just the injectors, that seems like a shed of good news?

Richie O

I would have that injector checked, or all of them. As said above if they are damaged or hung open they will let compression up. The guy that bought a truck from me had that happen after some bad fuel. The injectors all hung open.

Scotts_D250

Funny, i also thought it was bad fuel, i didnt get any symptoms untill i filled up recently... Should i just purchase a new set of injectors ? Maybe a little bigger set ? Idk where to have the checked as i cant drive the truck, and its cheaper than a new Ip.