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so basically, i have a poopy single piston 4lug FC.
But the brakes are especially shitty. The first half or so of pedal travel does nothing at all. And then the second half has not a whole lot of resistance and even when pushed to the floor doesnt stop too quick. I still need to get the wheels off and take a look at how much meat is on the pads, but im thinking worn pads wouldnt cause such poor performance so there might be something bigger wrong with it. Anyone got any opinions? |
blow-by in the booster, low on fluid, worn out brake lines, leaky calipers...
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my brakes sorta sucked and a new master cylinder fixed it. see if it is leaking
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ive got a new master, braided lines, and 4 piston calipers to go into, fc brakes are always mushy
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Originally Posted by j9fd3s' post='801429' date='Feb 13 2006, 07:39 AM
fc brakes are always mushy No mushy breaks on my fc.... |
Originally Posted by GMON' post='801448' date='Feb 13 2006, 08:33 AM
No mushy breaks on my fc.... what did you do? gsl-se brakes always seem to be firmer, and theres not much difference |
ive also noticed that when sitting and idling, pushign the clutch in makes my idle go up ~50rpms, and depressing the brake pedal makes it drop 100-200rpm. Any ty-ins with poor performance?
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Originally Posted by Leetheslacker' post='802678' date='Feb 18 2006, 02:18 PM
ive also noticed that when sitting and idling, pushign the clutch in makes my idle go up ~50rpms, and depressing the brake pedal makes it drop 100-200rpm. Any ty-ins with poor performance? nah, when you push the brakes, the booster is a small vacuum leak |
yay finally! where are the pics? i just replaced the booster hose at the hardline to the intake manifold and they feel a tad firmer... it was a crappy hose.
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id check the fluid level, normally a pedal that mushy is a leak somewhere, im guessing a possible master cylidner leak.
to check if its the master cylinder, if you push it real fast and it sinks and doesnt stop much let it up and press down quick again, if its stronger now, feels like it built up pressure, you have an internal leak in the MC. basically you shouldnt have to pump your brakes to build pressure with the car running. sometimes thats tricky tho because altho it shouldnt happen with a bad booster sometimes it does, which is odd. But of course if your MC is leaking too long the leaking fluid will build up inside the brake booster and eat away the diaphragm....which would kil the booster. but with the booster kill your pedal would be harder to press. bah whatever, disregard this whole last paragraph, im being to technical i my head. kevin. |
Originally Posted by teknics' post='802767' date='Feb 19 2006, 04:55 AM
id check the fluid level, normally a pedal that mushy is a leak somewhere, im guessing a possible master cylidner leak. to check if its the master cylinder, if you push it real fast and it sinks and doesnt stop much let it up and press down quick again, if its stronger now, feels like it built up pressure, you have an internal leak in the MC. basically you shouldnt have to pump your brakes to build pressure with the car running. sometimes thats tricky tho because altho it shouldnt happen with a bad booster sometimes it does, which is odd. But of course if your MC is leaking too long the leaking fluid will build up inside the brake booster and eat away the diaphragm....which would kil the booster. but with the booster kill your pedal would be harder to press. bah whatever, disregard this whole last paragraph, im being to technical i my head. kevin. yeah the booster isnt really open like that |
basically, if i pump it real fast it just hits the floor a lot, doesnt really build up any more pressure. It has some resistance but is still easy to hit the floor with.
and the fluid level is still at full. i considering just living with it until i get all the 5lug swap stuff going. |
and out of nowhere comes the 3800 stumble and a mysterious idle fluctiation with electrical load placed on and off.
****. |
haha! no n1 for you sir. time for full tune up... yay
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when I did the stainless lines and took everything apart for paint the brakes felt good then got soft after a few miles of driving.
I had to go back and bleed them again, now they feel good again. |
bleed brakes, air in the lines probably. start with rear passenger, go to rear driver, go to front passenger, then to front driver. or was it opposite of that? ****!! gonna probably need somebody to help you out. either you pump the brake pedal, or other guy does.
fc ownership is vundabar! |
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