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Post by milkboy on Aug 19, 2009 21:25:26 GMT 8
Joey Bro,
Any idea what is the good point having fuel regulator? did you do on that? thanks
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Harmony Motor
Motoring with Peace of Mind - Honesty, Sincerity and Integrity are our beliefs!
Posts: 1,761
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Post by Harmony Motor on Aug 20, 2009 13:29:14 GMT 8
Joey Bro, Any idea what is the good point having fuel regulator? did you do on that? thanks Good question! The purpose of Fuel Regulator is to increase the fuel pressure in the fuel rail. The result will be more fuel injected for the same Injection Pulse Width and also finer fuel mist which will improve combustion result. The situation where you need to use a Fuel Regulator is when your AFR is too lean and even after you increase your injection pulse width, the amount of fuel is still not enough. And if that is a borderline case, you can use a Fuel Regulator to increase it and richen the AFR. During the older days where there is no mean of increasing the Injection Pulse Width by OEP or the Piggyback is not doing a good job (mostly Turbo project), then the tuner/owner will use Fuel Regulator. Sometime, where the weather changes very drastic during the day, and the owner is knowlegeable enough to twitt the device, Fuel Regulator is handy too. Thanks and safe driving. Joey Lim Harmony Motor
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Post by TeaNazaR on Aug 31, 2009 14:48:14 GMT 8
broe milkboy sory tompang ur thread, since its abt fuel regulator.
hi broe joey, very good explaination. i hav a question though. i hav afpr installed sometime ago. before concluding the afpr goin bad (nope there's no fuel trace in vacuum line), i would like to seek advise from you.
during idle, how great should the vacuum pressure be from the intake manifold to the afpr? i pulled that afpr vacuum hose and place my thumb over it, the suction wasn't that great compared to other vacuum lines. Im not sure if the vacuum from that hose is strong enough to pull the spring in the afpr to lower fuel pressure during idle. or could the spring b stuck? if any of this is the case, means im now running high pressure during idle which will increase the idle fuel dump and emission.
also to add, i've juz installed a fuel pressure gauge ontop of the afpr. the reading stays 42psi despite throttle changes or vacuum plugged/unplugged. is there any fuel test port i can check the fuel pressure besides from the afpr itself?
hope u can advise further, my ride is cerato v2 m, thank you...
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Harmony Motor
Motoring with Peace of Mind - Honesty, Sincerity and Integrity are our beliefs!
Posts: 1,761
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Post by Harmony Motor on Sept 7, 2009 18:31:49 GMT 8
broe milkboy sory tompang ur thread, since its abt fuel regulator. hi broe joey, very good explaination. i hav a question though. i hav afpr installed sometime ago. before concluding the afpr goin bad (nope there's no fuel trace in vacuum line), i would like to seek advise from you. during idle, how great should the vacuum pressure be from the intake manifold to the afpr? i pulled that afpr vacuum hose and place my thumb over it, the suction wasn't that great compared to other vacuum lines. Im not sure if the vacuum from that hose is strong enough to pull the spring in the afpr to lower fuel pressure during idle. or could the spring b stuck? if any of this is the case, means im now running high pressure during idle which will increase the idle fuel dump and emission. also to add, i've juz installed a fuel pressure gauge ontop of the afpr. the reading stays 42psi despite throttle changes or vacuum plugged/unplugged. is there any fuel test port i can check the fuel pressure besides from the afpr itself? hope u can advise further, my ride is cerato v2 m, thank you... I have not taken note of the idle vacuum reading as it always varies a little when the engine is constantly adjusting by opening/closing the Idle Actuator Controller. Thus the Reading is always moving. But however there is always a range but I never keep track of it. The feeling from any vacuum hose connect to the Intake Surge Tank is always 'not so strong' to your finger. The smaller the diameter, the 'weaker' it seems but the reading should be same for all hoses. Plugging and unplugging the vacuum hose on your Fuel Pressure Regulator may not cause the Fuel Pressure to fluctuate a lot. Most FP Regulator are designed to sit neutral at idle when the diaphram is not stretch and spring is at ease too. So plugging and unplugging may not cause any fluctuation as it is on the neutral region. There are professional Fuel Pressure and Flow Gauge used by the workshops. But these gauges is not for permanent fixtures for your car.
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Post by TeaNazaR on Sept 10, 2009 10:10:35 GMT 8
thanks for the advise broe Joey...
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Post by TeaNazaR on Sept 10, 2009 16:56:15 GMT 8
Sory Joey just to check with you...
does cerato 2007 v2 have fuel return line?
and can we install afpr inline with the fuel rail without fuel return line? ie. pump->afpr->injectors?
thank you...
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Harmony Motor
Motoring with Peace of Mind - Honesty, Sincerity and Integrity are our beliefs!
Posts: 1,761
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Post by Harmony Motor on Sept 10, 2009 19:35:14 GMT 8
Sory Joey just to check with you... does cerato 2007 v2 have fuel return line? and can we install afpr inline with the fuel rail without fuel return line? ie. pump->afpr->injectors? thank you... Alpha II engine is a returnless system. So I don't think you can use that equipment.
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Post by TeaNazaR on Sept 10, 2009 23:19:20 GMT 8
aites thanks very much broe...
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