Thx dr3500. By the time you change it, what pressures are you seeing? Also why are you changing it so quickly if the gauge isn't showing it to be clogging?

 

Lightman,I went with the FASS system 150 gph and increased the the intake tube going into the fuel tank.I had my dealer check my fuel pressure after my truck stumbled two weeks ago I threw two codes 0192 & 0247 with a check engine light.The dealer installed the PSI gauge and had me hit the key a few times,I had 10 psi of pressure,they tell me low side of pressure since I am running the quad box.I called a few other diesel shops in the state of indiana to make sure the dealer new what the heck he was talking about.After talking to them I had the FASS system installed with a Autometer pro-comp fuel pressure gauge.I tested it this last week,WOT in the 140 HP position on the quad-box my fuel pressure held at 12-13 psi constant,according to the fuel pressure gauge.coobie

 

Coob, I'm familiar with the fass system and am not interested, no offense. I'll be going with a nice and quiet RASP when I upgrade. However, the issue here is not low fuel pressure. I'm trying to determine the stock lift pump's pressure trends as mileage accrues, so I can see if my readings or normal or if I may have a dirty fuel source. Now that most people with my configuration have reported far less drop compared to my experiences, I will probably do a fuel analysis of my station. When I did this a few years ago in Florida, one of my local stations had SEVEN TIMES more particles per gallon than another local station. (both were high volume stations with truck islands - fresh fuel doesn't always=good fuel, just fresh ). In any case, with the increasing injection pressures today and especially with a pressure box, I want the cleanest fuel I can get.

 

Lightman,no offense taken.I looked at the Rasp system also,they are very nice also.With the bigger pickup tube installed in the fuel tank you can hardley hear the FASS system running.Good luck on your dirty fuel source problem,coobie.

 

Coob, I'm sure the fass pump is a great system. I hadn't heard about the larger pickup tube, but I just happen to have some super sensitive hearing, and any additional tiny noise tends to drive me nuts.

 

Don,t make me drive down to Cleveland from southern michigan to let you hear how quite the FASS is coobie (PS) I could meet you in Toledo OH if you want to hear it.

 

"1sttruck, just curious, but why do you think low fuel pressure would cause the filters to clog earlier?"

Filters are ideally changed when the pressure drop across the filter reaches some value, say 5 psi, but for those of us without fuel pressure gages we will change them when recommended, 15k miles, or when we notice a lack a hint of stalling at cruising speed, lack of acceleration, or a rough idle. I've never been able to get more than about 8k miles out of a filter before getting such symptoms, so I'm guessing it's low fuel pressure. A pressure drop across the fuel filter combined with low fuel pressure to begin with will produce shorter filter life.