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Classic/Antique Car Repair/1968 pont. lemans brakes

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QUESTION: I have replaced the master cylinder and brake cylinders. I've bled all wheels but still have no first part of pedal. The front brakes work but the back doesn't. I'm asking could it be air and i'm not bleeding them enough? Thats the 2nd master cylinder could it be bad ones? I believe it has the original booster could that be it? And is there a certain rotation to bleed the brakes, like starting with the front driver and going clockwise? If you can understand what i'm asking i would greatly be gratful. thank you!

ANSWER: Do you by chance have disc brakes on the front end of this car? Let me know.
Brad

---------- FOLLOW-UP ----------

QUESTION: thank you for you're response. but to answer your question, no, i have drum brakes all the way around. and again i appreciate you time.

Answer
I doubt that the brake booster is the culprit. The correct bleeding procedure is to start with the wheel furthest away from the master cylinder first and work towards the master cylinder. that would be the right rear, left rear, right front and finally left front. It is not unheard of for two master cylinders from the same rebuilder to be defective. If the bleeding procedure does not help let me know.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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