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Apr
9
comment How Much Pressure Drop across the fuel filter is normal / acceptable?
you know, either the original question changed or I misread it. I thought they were asking the max pressure drop that is allowable.
Apr
8
comment Strange overheating behaviour
Lol, 'engineer'
Jan
29
comment How can you use the headlights to tell the quality of your battery?
@JPhi that's a really good point. Not to mention that most car batteries (if I'm not mistaken) all produce the same amount of volts. So really, putting in a 'bigger' battery essentially means putting in a battery than can handle a large amperage being pulled on it, which is pretty safe. Still, though, I always err on the side of caution when I'm changing up electrical circuits, b/c that stuff can kill you dead pretty quick.
Jan
29
comment How can you use the headlights to tell the quality of your battery?
Ah hah, yea so if you replace a bad battery with a good one you should see the headlights dim less. But again, it's a pretty hard measurement to make. Could you tell if your faucet ran a bit faster when you put in a low-flush toilet?
Jan
29
comment How can you use the headlights to tell the quality of your battery?
Yea, that's a fair assumption to make, however the battery isn't really our main pipe, the battery is the pump that is pumping the water through the pipe. The pipe is analogous to your wire - bigger pipe is equivalent to larger gauge wire. I would be hesitant to add a larger battery b/c I wouldn't know if the rest of the circuit could handle the higher current. I.e. if I doubled the pressure in my pipe, would the pipe burst?
Nov
4
comment Does intermittent starting difficulty indicate alternator or starter?
The OP didn't really say that it ran fine. He said he had 'no problems' driving to work, but that's not to say that it was not running sluggish. Besides, these were simply fallback suggestions, in the case that the alternator, battery, and starter are all fine.
Mar
14
comment Typical Stock Boost Values
That's the thing, I don't know any particular car models to reference. I do know from speaking to some Ford and GM engineers that both these OEMs are moving towards undersized vehicles with boosting, in order to meet tougher CAFE standards. I don't know of any that are currently on the market though. Are most stock boosted motors strictly boosted for performance?
Mar
14
comment Typical Stock Boost Values
I've looked through the mentioned section in Heywood, and even read a good portion of the section on knock. I'm not looking for any more insight than that, i'd just like to know broadly what range or pressures engines are boosted to. Is 15 psi an upper limit, and is that usually reserved for performance vehicles? Or are greater boost values common?
Mar
14
comment Typical Stock Boost Values
I've added some detail to my original post to address some of your questions
Mar
6
comment Misfire the next morning if car runs only for 15 seconds
I would guess that any oil on the cables would eventually seep through the protective covering, and cause a short on the wires. At first startup, this would cause the wires to heat up and eventually burn off whatever minute amount of oil was causing the short. After this, the car would run normal. After letting the car sit for a bit, however, the oil has a chance to seep back through the plastic covering and cause a misfire again. I should emphasize that this is purely speculative, however. Replace those cables!