is there a way to check for a bad injector hopefully something i can do my self thanks____________________________________________ ______________04.5drw smarty4.4 sps62 cfm+ autometer straghtpiped afeII ddp50s

 

what is your MPG when you are not beating on your truck.
does your smoke ever clear up under boost.
do you have 7 gallons of oil where there should only be 3.

 

does your truck have a cummins applied rustproof undercoating? oil everywhere ?? white smoke on idle is a bit of a sign too, but op temp has a lot to do with that also.

 

with engine cold check exhaust manifold to see if one port is taking longer to get hot. use a temp. gun so you don't burn fingers.

 

i hear you can also take the valve cover off and start the engine, and look for mist coming off one injector. not sure if thats true or not, but i heard that used to be the way dodge had to do it.

in the end, take it to a shop, and have it flow tested. if you end up taking it to dodge, more than likely you will have 6 bad injectors, 3 bad lights, two bad seats, a fuel pressure relief valve out, all bad ball joints and u joints and then they are gonna say that you have mods, and that they broke everything, so you are gonna have to pay for it out of pocket.

 

It depends on if you are trying to diagnose a miss or if you are looking for the cause of your oil being too high. If you are making oil (diesel fuel in the oil) usually you can pull the valve cover as stated above and look for the fuel mist coming off 1 of your injectors. If you are looking for a miss, you have a couple of options. You can check the manifold for a cold cylinder. That is good if you have a completely dead cylinder, all the time. You can unplug the injectors and narrow it down to a group of two, then pull the valve cover and unhook one of the injectors and see if it runs the same. Be careful, those things crank a lot of voltage out and will zap you good if you touch it while running. Your 3rd option is to buy a high quality scan tool (Snap-on Modis, Starscan etc.) that does cylinder cut-outs. You can road test it and kill the cylinders to figure out which is missing. It is the most expensive route for sure, but it is also the safest and easiest way to find out.