my head gaskets are still good but my truck smokes a creamy color.and then it blows blue to creamy black then straight white.

 

how old are injectors or injection pump? also has the pump been turned up? when was the last time the pump was timed correctly?

 

they are stock.my truck has 210,000 miles.time to change them?the pump is turned up and it was timed in august of 2010.shuld i change my fuel filter cus i havnt changed it in awhile

 

when was the last time it was changed? and 210 on stock injectors? man ya gotta love the 6.9 i'm gonna assume your injectors are due but dieselcrawler can help you better than i can. he has a lot of knowledge on the 6.9's

 

i change my fuel filter every oil change. 3000 miles.

also the injectors and pump are due if they are stock still.stock fuel system is only designed to last 100000-125000 miles.

 

ok so i had a shop look at my injectors and pumps and they said they were fine.so im going to change my fuel filter and see what happens

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last time i changed my fuel filter was over a year ago haha

 

umm ya............probably time to change it.

 

they looked at them and said they were fine? ha! good shop. only way to test injectors is to remove them and pop test them to look for fuel seepage and low pop pressure. also look for incorrect spray pattern.

 

I know this is an old thread, sorry to dig it up. Injectors are on my list to change in my 6.9, there stock and have 280,000 miles on them ...

 

yeah sounds like you might have had the timing slip on the IP as well..... maybe the adj. screws came loose..... cant rember if these ones have them or not.... i know some pumps do ..... just a thought as well..... but yeah it sounds like your pump could be puking fule like crazy and the injectors are probably lazy as all hell...