84 300D vacuum leak?
#1
84 300D vacuum leak?
Hello all,
I have a 1984 N/A 300D that has a vacuum leak somewhere i believe.
I have reduced the vacuum system to the single line going from the vacuum pump to the brake booster, with a gauge T'd into the line.
Upon starting the engine it takes approximately 20-30 seconds before the max vacuum is reached (about 22 in Hg) where it will remain while idling. revving the engine increases vacuum about 2-3 in Hg.
Upon stepping on the brake pedal, vacuum decreases slightly, and decreases more when the pedal is released (down to about 17) where it takes a few seconds to regain the vacuum. if i press the pedal multiple times quickly i eventually lose all vacuum and it becomes difficult to press the brake pedal.
are these normal vacuum levels/times? or am i looking at rebuilding the vacuum pump?
Thanks!
I have a 1984 N/A 300D that has a vacuum leak somewhere i believe.
I have reduced the vacuum system to the single line going from the vacuum pump to the brake booster, with a gauge T'd into the line.
Upon starting the engine it takes approximately 20-30 seconds before the max vacuum is reached (about 22 in Hg) where it will remain while idling. revving the engine increases vacuum about 2-3 in Hg.
Upon stepping on the brake pedal, vacuum decreases slightly, and decreases more when the pedal is released (down to about 17) where it takes a few seconds to regain the vacuum. if i press the pedal multiple times quickly i eventually lose all vacuum and it becomes difficult to press the brake pedal.
are these normal vacuum levels/times? or am i looking at rebuilding the vacuum pump?
Thanks!
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