Brake problem!!!
Thread Starter
|
Junior User
Joined: May 2006
Posts: 77
Likes: 0
Brake problem!!!
I started my truck after work today. It too a few cranks to start which is very unusual. When I started driving and went to stop the brake pedal was very hard to push and took a lot of force to slow down the truck. I think I am not getting vacuum to my master cylinder. I took the vacuum hose off of the back of the master cylinder and there was little to no vacuum on the line with the engine running. How do I fix this???
Elder User
Joined: Jun 2006
Posts: 924
Likes: 0
From: Fuquay Varina,NC
Have to find the vaccuum leak, must be a pretty large one if youre losing brake power. Does the engine run smoothly or rough?
Do a visual check on all the hoses. Have you installed a new TB or TB spacer? Get a can of carb cleaner and spray around the base of the TB, and around the intake manifold with the truck running. If the RPMs jump, youve found a vaccuum leak.
Do a visual check on all the hoses. Have you installed a new TB or TB spacer? Get a can of carb cleaner and spray around the base of the TB, and around the intake manifold with the truck running. If the RPMs jump, youve found a vaccuum leak.
Post Fiend
Joined: Dec 2006
Posts: 9,111
Likes: 3
From: Lexington Mo
Same here
You must have a major vacume leak (engine running bad) If the engine's running ok, then check for vacume at the brake booster by pumping the brake pedal several times with the engin not running. Holding pressure on the pedal, start the engine. If the brake pedal fall's slightly you are getting vacume. If not you have a vacume problem going to the booster..........
Bob
Bob
Thread Starter
|
Junior User
Joined: May 2006
Posts: 77
Likes: 0
Thanks for all of the input guys. The truck is not idling rough which confuses me because if I was not getting vacuum it would run rough like ya'll said. I am going to haul it to the shop tomorrow.
Senior User
Joined: Jan 2007
Posts: 144
Likes: 0
ohboy44,
SOB is an understatement. There is no way to hook it up if it comes loose that I could find. My wife couldn't even get her hands back there to feel it.
The short piece from the back of the intake hooks onto a short metal line that is bolted to the back of the cylinder head and then another rubber line runs to the master cylinder booster.
When I re-installed my intake, I used a piece of vacuum hose and clamped it to the back of the intake manifold, zip tied it to the metal line, and continued it on to the master cylinder.
I also talked to the shop foreman at my local dealership and his only comment was "Yeah, that line is a b*tch." I think Ford had all these line installed and connected before the cab of the truck went on...
The problem is, to get at the back of the intake manifold, you will need to pull the intake, at least from my experience, this is the only way to get at it.
Best of luck...
Doug
SOB is an understatement. There is no way to hook it up if it comes loose that I could find. My wife couldn't even get her hands back there to feel it.
The short piece from the back of the intake hooks onto a short metal line that is bolted to the back of the cylinder head and then another rubber line runs to the master cylinder booster.
When I re-installed my intake, I used a piece of vacuum hose and clamped it to the back of the intake manifold, zip tied it to the metal line, and continued it on to the master cylinder.
I also talked to the shop foreman at my local dealership and his only comment was "Yeah, that line is a b*tch." I think Ford had all these line installed and connected before the cab of the truck went on...
The problem is, to get at the back of the intake manifold, you will need to pull the intake, at least from my experience, this is the only way to get at it.
Best of luck...
Doug
