Quote:
Originally Posted by elhigh
If yours is a fuel injected engine, the computer might recognize the loading paradigm and provide no fuel while the engine is being driven by the tranny. Certainly a carbureted engine will continue to burn fuel, but only at a slightly above idle rate as the increased vacuum pulls a little extra fuel through the jet.
As for the brake booster, if you're still in gear but letting the car pull the engine, you're getting a strong vacuum into your reservoir the whole time (unless it's a diesel, YMMV). And even if you're coasting in neutral you should still have enough vacuum in your reservoir for a couple of stops.
If not, consider building or buying a supplemental reservoir to tuck into one of the unused spaces of your car, to provide backup.
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thanks! excuse me if this is commonly searchable on here but since we're here... for those that shut of their engine and coast in neutral, then restart their engine, is there advanced wear on the engine upon restart due to low oil pressure, and do you use a starter or can you bump the engine with the clutch at speed?
How much mpg increase can you expect to gain? Sounds risky but worth it if you know what you're doing...
