Plenumotron
01-17-07, 02:59 AM
#1
The Sleeve
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Plenumotron
Hi all
Another question, why does my brake pedal now feel wierd when i go from accellerating hard to braking, i mena it feels like its been pressurised with air, and theres like a balloon have to crush before the brakes work, is quite scary at 120 mph
It happened when i changed the cracked leaky tube from the plenum chmaber to the servo assist beastie
Keeping it fresh for 2007
Another question, why does my brake pedal now feel wierd when i go from accellerating hard to braking, i mena it feels like its been pressurised with air, and theres like a balloon have to crush before the brakes work, is quite scary at 120 mph
It happened when i changed the cracked leaky tube from the plenum chmaber to the servo assist beastie
Keeping it fresh for 2007
01-17-07, 08:14 AM
#3
RX-7 Bad Ass
iTrader: (55)
That hose has a check valve built in so the brake booster only gets vacuum. If you replaced it with a non-Mazda part, you probably eliminated the check valve.
In the US, there was a recall done on that hose which moved the check valve and changed the design. If you have a RHD car, that's a whole 'nuther story, I'm not sure where to source that check valve.
Regardless, you need to get that fixed pronto - that's a BIG safety problem.
Dale
In the US, there was a recall done on that hose which moved the check valve and changed the design. If you have a RHD car, that's a whole 'nuther story, I'm not sure where to source that check valve.
Regardless, you need to get that fixed pronto - that's a BIG safety problem.
Dale
01-17-07, 08:48 AM
#4
Racecar - Formula 2000
Originally Posted by DaleClark
That hose has a check valve built in so the brake booster only gets vacuum. If you replaced it with a non-Mazda part, you probably eliminated the check valve.
In the US, there was a recall done on that hose which moved the check valve and changed the design. If you have a RHD car, that's a whole 'nuther story, I'm not sure where to source that check valve.
Regardless, you need to get that fixed pronto - that's a BIG safety problem.
Dale
In the US, there was a recall done on that hose which moved the check valve and changed the design. If you have a RHD car, that's a whole 'nuther story, I'm not sure where to source that check valve.
Regardless, you need to get that fixed pronto - that's a BIG safety problem.
Dale
Correct, or the check valve could be faulty, or the vacuum assist chamber or hose could have a leak. You are feeling either no vacuum assist or positive manifold pressure (resistance instead of assist) until the manifold vacuum builds up and assists braking again.
Dave
01-17-07, 10:55 AM
#5
The Sleeve
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Originally Posted by KINETIK_FD3S
are you talking about the hose that goes from the upper intake manifold to the brake booster?
