RCU Forums - View Single Post - Midrange issue

12-12-2010 | 03:00 AM

#16

DarZeelon

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From: Rosh-HaAyin, ISRAEL

RE: Midrange issue - glow plug?

Quote:

ORIGINAL: wcmorrison

...Or a checkvalve between the muffler and the tank to ensure pressure stays up.

No way, Chip!

This cannot work and never will!

Muffler pressure in the tank at higher throttle settings, is higher; and becomes lower as the throttle is closed.
For this to happen, the pressure-line MUST allow bi-directional gas flow, to allow the fuel pressure to stabilize almost instantly.

If a check-valve is placed within this line and the engine is run at full; and then the throttle is closed to idle, the pressure within the tank will be way too high for a proper mixture... It will be too rich!
Since the excessive pressure cannot be bled-off back to the muffler, because of the check-valve; it will only become reduced as fuel is consumed; and this will take 'years'... during which the engine will dowse itself to death..

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