pjg

Brake pedal is very stiff, and engine idles rough, checked the engine vacuum and it was only reading 15 at idle, disconnected the brake booster and the vacuum jumped right up to 23, idles much smoother.

Brake booster diaphragm must be toast
any tips on replacing the brake booster it looks like a real pain ?


Thanks

WallyP

From a really old post in another world...

Oh, Man If there was ever a question that I can answer this is the one. BTDT.

You have to put your pedal back together so that you can depress the plunger in the middle of the booster. Make a peice of wood that jambs in between the pedal and the front of your seat to hold the pedal to the floor. Length is critical. Then I used a pair of needle nosed vise grips to grab the pushrod on the engine compartment side. Then it comes right out. You have to loosten the air box so that you can get it out through the little space between the fender and the cylinder head.

I fought with the thing for two weeks till I figured it out with much help from the list. This is not a dumb question, it's one of those Porsche tricks.

If you need more details email direct.

Jay Kempf
79 US 5 speed silber metallische

MBMB

I had my booster rebuilt, with excellent results.

pjg

All of the new brake boosters are made by ATE, the prices vary from $247 to $375, any one use parts geek they are the cheapest ( http://www.partsgeek.com) ?

Thanks