dave17352 wrote:
ninerbikes I answered your survey so what did you come up with. Do they replace the old pump with a new improved pump if there is problem? What do you think of stanadyne?
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You drive through Denver going to the Rockies? There's numerous places in Denver to buy 10 gallons of biodiesel before you tow up the grade. Do a google search in Denver, CO for biodiesel, One near Commerce City, one near Aurora, CO
I'd keep your truck.
I'd slow down to 55- 57 in that 20 mph headwind.
I'd run biodiesel blend, however you have to get it, in the summer, and any time you tow in temps above 80F. Even if you only add a quart every 24 gallons, it helps tremendously with lubricity in your fuel.
I can't comment on Stanydyne additive. I can say that Power Service Power Kleen white bottle additive, the 96 oz size at Wal Mart, will keep your fuel dry. Put in 8 ounces every fill up, to keep condensation out of your fuel tank, and keep your fuel tank full, as much as possible when you are storing the truck a lot without doing much driving.
Never run your fuel tank gauge below 1/4 tank, that HPFP uses the fuel as coolant, you need fuel as coolant, and 1/4 tank of fuel is the minimum acceptable level of coolant for your HPFP.
I'd run that motor in a gear going up the grades like I-70 where you can always accelerate in a healthy manner, no matter how steep, if you add in more throttle at the pedal. If you can't accelerate in the gear you are in, drop it down gears, until you can, and slow down. Somewhere on that motor, while trailering, on the torque band, is a sweet spot, where the motor makes enough torque, enough horsepower, that you aren't marginalizing the whole powertrain system. Find it, and live within it's means. Diesels are very good about letting you know when you are working them, and when you are overworking them, let your tach and how the throttle responds to added input be your guide. If you get nothing or not enough from added input, you're not where you need to be speed wise, gear wise, and load wise. Downshift and slow down. Let the motor work at a range it's comfortable with, not at a death rate.
If you lose a HPFP, Chevy GMC will take care of you. File the online complaint with NHTSA, just to be safe, and to help NHTSA keep complete records on this issue with this Bosch fuel pump design. They sold all of us a Bill of Goods, they deserve what they have coming to them in warranty claims.
