Good tip for not needing a vac pump. long hose. put in mouth. suck .tip i learned a long time ago for testin EGRs and stuffs
1988 Honda Accord LX-i Coupe 123k miles.
It's kind of tough to watch your timing mark while doing that though and tell how long the vacuum is holding. My hand vacuum pump is one of the most useful tools I have ever bought. You can get them for $25-$30. Great for testing all kinds of things, and you can bleed brakes without a helper. I have even used it to start siphoning gas without worrying about getting it in my mouth.
Haven't got around testing the vacuum advance but I've got myself an EK booster+master cylinder for cheap so I figured I'll just replace them Updates soon.
You could try disconnecting the booster and just running with manual brakes and see if that helps. I had to do that on mine, couldn't stand the hiss and the inconsistent brake pedal.
a hissing brake booster is blown and causes a vacuum leak
the check valve is there so you still have power assist after full throttle, it will not stop the leak
another thing to consider:
if your overall wheel size is bigger and you are calculating mpg by your odometer you will have lower mpg because you have actually traveled farther than your odometer indicates fyi
Eric
3geez member since October 12, 2000
"All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau
Replaced my booster few weeks back and the hissing is gone as well as gaining around 2-3 MPG.
Man I never considered the wheel size now. Does anybody know what the exact size of the stock 1g tires? I know its 155-13" but nobody listed the profile (N)
On the '76, the tire size was 155 SR 13, which means the sidewall is 100, I guess. The tire size changed by '81 though, and I don't know what it was.
Dr_Snooz
"I like to take hammers, and just break stuff, just break stuff." - Beavis
1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap
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I guess I'll check the speedo with my GPS to confirm if its accurate or not.
you need to check the odometer too, the speedo is probably off a bit if you pulled the needles to paint them orange.
The odometer is usually pretty accurate if the tire size is right
Eric
3geez member since October 12, 2000
"All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau
OMG yes you are right! I just got around checking the exact odometer reading compared to my GPS and its about 0.14km off per km. Which the odometer would read 14km less if I travel 100km according to the odo. It would be 114km exactly according to GPS.
Looks like I'm gonna have to recalculate my MPG again with my GPS (Y)
Glad I could help.
so now, when you check your mpg by your odometer, just multiply your kms traveled by 1.14 and divide by gallons and it should be right
Eric
3geez member since October 12, 2000
"All this worldly wisdom was once the unamiable heresy of some wise man." - Henry David Thoreau
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