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mpierce

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Posts posted by mpierce


  1. I assume you did an oil test, and it is fuel in the oil? If so, you NEED to get it fixed asap. The fuel dilution quickly removes the lubrication qualities of the oil, and wear inside the engine goes up dramatically, and keeps increasing as the level of fuel increases. It is a BAD thing. May not be a cheap fix, but guarantee a LOT cheaper than the fix to overhaul an engine! At least $10k cheaper!


  2. Did you interview the previous owners to see if they raised the tag or not? If not, how do you know if they did or not?

    I have seen this separation on single axle tires also. Obviously, they could not be lifted, but they would not scrub either. I have seen it on steer tires.

    I have seen other tires without it.

    I have seen tandem trailer tires, that scrub MUCH more than tag axle tires in jackknife situations, both develop, and NOT develop, these cracks.

    I have put over 100,000 miles on trailer tires, AFTER these cracks develop, without a tire failure.

    Again, I am NOT against raising the tag. I just do not feel that it contributes to early tire failure.


  3. I think there is some confusion between DPF, diesel particulate filter, and DEF, diesel exhaust fluid.

    DPF came out first. They are/were a pain. They burned fuel to clean them out. Caused problems.

    DEF was then added. By adding DEF, the makers are able to tune the engines better, and greatly reduce the particulates going to the DPF. Thus, increasing mileage and reliability.

    The restrictions of long idling, slow driving, definitely applied to the DPF only engines. Caused them LOTS of problems, as the amount of particulates at idle was overwhelming them.

    When the DEF is added, it greatly reduces the particulates going to the DPF at idle, making idle and slow driving much less of an issue.

    I have had both type engines, and I GREATLY prefer the newer ones with the DEF added. The fuel mileage is better, and the problems are lessened.


  4. You are correct. Suction side includes tank pickup, fuel line from tank to primary fuel filter/water separator, separator itself and line from separator to lift pump.

    The lift pump provides pressure, so the line from it to secondary fuel filter, secondary filter itself and line from secondary filter to engine/injector pump is pressurized. Pressure varies by engine/injection system.

    So, as OP stated the hose was NOT leaking, how did replacing a hose that is pressurized, with a pinhole in it, fix his problem?


  5. There are no differentials on either the tag axle, or the trailer axles. Each wheel end is free to turn on its own. No connection to the other side on either. The tractor drives are driven thru a differential, but I do not see what difference that makes.

    I am NOT saying it is wrong to lift the tag. It will lessen the scrub in turning. It is just that I do not think, for most cases, it will make a difference. Seems like almost everyone complains about aging tires out, getting too old, before they are worn out.

    There are some risks to lifting the tag. It puts more weight on the drive axle. It increases the risk of bottoming out on the rear if the road is not level. There is a risk that you forget, and take off down the road with the tag lifted.


  6. Just depends on where you want to go. The bigger you get, the more limited you will be in tight roads, and smaller sites to park. If that limitation is OK with your lifestyle, then the bigger WILL be better.

    If you have found that your current size is keeping you out of many places you now want to go, you will not be happy that the bigger coach will keep you out of even more places.

    All things are trade offs.


  7. Cummins DP 400, Allison 6 speed, 2012 Winnebago Journey 42E. About 7 mph is all we hope for. We're towing a 2012 Cadillac SRX. We didn't buy this beast for fuel economy! We didn't do any better when we had a 1999 Dodge RAM 2500 pulling a 28' Cardinal. We don't whine about fuel economy. I like to say, "If you can't afford the fuel, you should've have spent that kind of money on the vehicle!".

    Ouch! "7 miles per hour is all we hope for"

    Should get good fuel mileage at that speed! LOL


  8. We use a Coleman griddle. It does not cover all three quite right, but two are good. It needs to be somewhat heavy, to evenly distribute the heat. Otherwise, it is really hot where the burners are underneath, and quite a bit cooler between them. The heavier the more even the top is heated.


  9. Why would turning cause flat spotting of the tag tires? I have a couple million miles in a long wheel base Peterbilt, pulling a 53' Reefer. Everyday, did a LOT of short turning, jackknifing back into parking spots and docks. Not ONCE flat spotted a tire, having two sets of tandems, one on tractor, one on trailer.

    At times jackknifing, the trailer axles would stand still, and pivot! I owned the trucks and trailers, and paid for the tires. The same tires used on big diesel pushers. I would get 200k or so on retreads on the trailers!

    So, how does turning flat spot them, when the DP cannot turn nearly as short as either the trailer or my Pete?


  10. Shouldn't a lift pump be supplying more volume to the main pump than is being used? Thus, there would be pressure in that line? So, the only way a pinhole would cause lack of fuel, would be to leak it out?

    How could it suck air into a hole that has positive pressure inside of it? Or am I mistaken, and there is still vacuum AFTER a lift pump?


  11. According to Tiffin, on new 43 foot Allegro Buses, the front axle rating is 15600 pounds, rear is 22000 pounds and tags are 13300 pounds.

    It appears your front axle is within limits although starting to approach the limits. Redistribution of the cargo might do enough. I am unsure how to change the tags to put more weight on them. It appears they should be adjusted downward toward the road surface which should add more weight to the tags and take some off the front.

    If you increase pressure in the tag, it will add wt. to the tag. However, it will also ADD wt. to the steer. And take wt. off the drives.

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