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Is This normal? Blowing brake boosters
Quick rundown i baught my truck in 2001
i replaced the brake booster that i baught the truck with,(it failed) (around 05-07) cant remember exactly what year. it was a napa replacement booster listed for a 1970 gmc 2500.
ive been having a hard brake pedal for a few months now. and braking perfromance sucks.
when the brakes are acting normal i can lock them up (not possible now)
i checked the vacuum line
i pulled the line off the booster and hear the air (motor almost dies-plug with thumb) and retures to idle)
it seems to me i need a new booster. is this normal replacment (in years from when i replaced it before) or is it premature failure?
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1970 2wd  3/4 ton- 2004 crate 350 thorley tri-y headers-edelbrock performer eps manifold 600cfm performer carb, crane cams energizer cam,lifters, dual 2.5 magnaflows, mallory HEI, powermaster 140 amp altenator, griffen aluminum radiator.(8 MPG  )
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