[Vwdiesel] Diesel talk for beginners --- ( Does a Dieselengine
slow down ...
LBaird119 at aol.com
LBaird119 at aol.com
Mon Jun 20 09:02:45 EDT 2005
except I think the bucking trashed a
tranny to chassis mount. The car now swerves to
right after accelerating hard and letting off the
fuel. Anyone concur on this diagnosis?
I'd look at a lower control arm bushing instead. Tranny mount would
let the engine and transmission buck and move but shouldn't affect the
alignment, which is what it sounds like you have going on.
If I didn't find a bad bushing then I'd check tie rod ends (outer AND
inner) ball joints, wheel bearings (front and rear) for slop and upper
strut mounts, in about that order.
On braking, I think most of us refer to a running engine when we talk
about "engine braking". Meaning foot off the accelerator pedal, going
downhill or coasting to a stop. Seat of the pants, in my experience
says that an unthrottled diesel doesn't offer a lot of it. Compression
doesn't figure in as much as it should due to the compression resistance
being overcome by the engine's own fuel system while idling. A gasser
has a throttle valve which then has the engine pulling a vacuum, fighting
the idle momentum a bit more. Compare either to a throttled diesel (early
Mercedes) and then you REALLY get some engine braking! Get your
foot unsteady on a rough road in Dad's '70 220 and you start getting
thrashed back and forth pretty good! It's not all that noticeable at higher
speed though, really noticeable at an idle.
Sure engines shut off and the diesel should "brake" more. That's generally
not standard practice though.
Loren
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