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Everything posted by porcupine73
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Well first I would make sure you can make the 'business case' for this conversion. You must accurately calculate over the lifetime of the vehicle or how long you plan to keep it what your savings will be to go to propane vs. just stay with gasoline. Don't forget the time value of money at whatever percentage you think it is; you have to shell out cash up front for the propane conversion. Propane conversions usually require a vaporizer tied in somehow to the engine coolant system so it doesn't freeze up. Not a big deal; your conversion would include one if it's needed. Dual fuel propane is popular on diesel engines because of increased hp. Natural gas can be a little more tricky because the pressures in the tank could be like 3000psi as it doesn't liquify at relatively low pressures like propane does, thus making LPG. I would absolutely love to convert my vehicles to NG but haven't found a reasonable way to do it. I tried a little propane experiment, just routing a little propane from those small camping cylinders into the intake just to see if there was a mileage incrase, sort of a synergy experiment.
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Well either there's so much crud in the fuel tank that it plugged up the new filter in 100 miles, or maybe it's just a coincidence that the problem went away for that time. Is the check engine light illuminated or are there any pending codes? There's probably a lot of things that could cause this problem; are your spark plugs and wires in good shape and are they OE? How many miles do you have and has the front oxygen sensor ever been replaced and is it OE? PCV valve OE? Air filter clean? Does it do it only when engine hot/cold/warm when it's hot/cold/wet/dry outside? More info please?
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Well you could look at the plug wires and coil in the dark, engine running of course, whilst spritzing water on them to see if there's any sparks then you'd know what has to be replaced if they are 'shorting'. I have a '96 Legacy that would cough and sputter a bit when floored from a standstill and it was the knock sensor causing it, but it never gave a CEL/MIL indication either.
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Yah I believe the preferred method per the manual is to check it 'hot' which I can't remember but is like 170-180 deg. F. or something like that. I check pretty much cold 'cause I just can't get a reading hot the fluid is just all over the place even after checking like 4 times. I think the risks in too high fluid are lots of air bubbles in fluid which isn't good for antiwear, or too low a fluid making the pump start sucking air and that is definitely bad as the clutches may slip causing mega wear. Too much diff gear oil could probably cause air getting whipped into the oil again air bubbles not good for antiwear, too low maybe the sun/ring gears can't pick up oil and you've basically got metal on metal rather than that nice hydrodynamic or whatever oil action.
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Maybe part of the issue is heat cooking/breaking down the diff gear oils? I think part of the issue may be that one front wheel and one rear wheel on the opposite side are kind of coupled b/c of the center diff and that might be what toasts the diff between the hypoid and ring gear or whatever? That's my impressions but maybe I could research first. FWD cars with transverse mounted engines/transaxles might have a straight or bevel or maybe even herringbone gear type incorporated diff which is not the same as the hypoid type diff's in Subaru's?
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Used that exact same Harbor Freight chain wrench on '96 Legacy 2.2 (sohc) with a piece of old belt taped on as suggested and it works fine, that chain wrench is plenty strong and the long handle makes it easy to hold. On the cam sprockets, I'd suggest getting the chain wrench wrapped around the side closest to the spokes. On my '96 Legacy I wrapped it around the side away from the spokes and I can swear the thing looks a little distorted now.
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Sure go for it. OE (Subaru) part is recommended for front o2 sensor. You might need some good penetrating oil to loosen the existing front o2 sensor and/or run it maybe 30 seconds or a minute to heat it up a bit before loosening. You'll need to get the vehicle up on jack stands or over a ditch or something to get at it. Make sure to put antisieze on the threads of the new sensor, tho many new ones come with some already on there. Sounds like you might possibly have a vacuum leak too and maybe that's the cause of the remaining problems.
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Some number of states now require 'California emissions' so that is probably true. I don't know if the cats for federal and CA emissions are different. Generic cats aren't always the best even if you can find one; cats are expensive because they have platinum or palladium or something in there as the catalyst which is 'spensive. Another option could be a salvage yard. Sometimes emissions components are required to be warranted for 100k miles or something, but I don't know if that would cover the crack.
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Hi Patrick. Well if your front diff gear oil is real low, that obviously is not optimal b/c it will result in excessive wear on the gears and stuff in there. I'm pretty sure it has a vent of some sort, almost anything like that does to keep the pressure inside equalized with the pressure outside. I don't know if you've had this vehicle since new, but maybe it was loose or something or somebody RTV'd it glued it in there for some reason; would be kind of weird but hey sometimes people do odd things. If you really have torque bind that's usually b/c of the center diff/clutches in the AT rather than the diff's, but changing the gear oils is easy to do and not that expensive. Are all your tires the same brand/circumference, ATF level good and not dark/burnt/etc?