86 ford 6.9
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86 ford 6.9
Hey there,
ive had my truck for 5 years now and love it. I think ive put more doors and fenders on it than the average person would miles on the average truck... ive had my list of problems aswell though.. My brakes seem to be the latest.. Ive replaced the vacume pump on the motor and checked the check valve, its working.. The brakes only seem to have any characteristics of power brakes at higher rpms when gearing down.. They will also slowly if at a light depress to the floor.. Ive check with my thumb the vacume at the master on the hose.. it doesnt seem to be much but should pull the diaphram.. Is there any good home shop test for all the components.. How do i test thebooster?
also, i replaced my return lines for my feul system and it seems that now all injectors are leaking where i replaced the orings.. I used lots of oil and followed all the info on these forums.. I have a complete spare motor that i am no thinking about stripping the whole works off to deal with this problem.. Any help would be great...
ive had my truck for 5 years now and love it. I think ive put more doors and fenders on it than the average person would miles on the average truck... ive had my list of problems aswell though.. My brakes seem to be the latest.. Ive replaced the vacume pump on the motor and checked the check valve, its working.. The brakes only seem to have any characteristics of power brakes at higher rpms when gearing down.. They will also slowly if at a light depress to the floor.. Ive check with my thumb the vacume at the master on the hose.. it doesnt seem to be much but should pull the diaphram.. Is there any good home shop test for all the components.. How do i test thebooster?
also, i replaced my return lines for my feul system and it seems that now all injectors are leaking where i replaced the orings.. I used lots of oil and followed all the info on these forums.. I have a complete spare motor that i am no thinking about stripping the whole works off to deal with this problem.. Any help would be great...
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From: Virginia
If you don't carefully wiggle and twist the caps back on, the o-rings can come out of the groove a little bit. With it running, I would try to wiggle the caps a little bit and see if they stop leaking.
One of the symptoms of a bad master cylinder is the pedal slowly going to the floor. If the area between the master cylinder and the booster looks wet, I would replace the master cylinder.
A symptom of poor vacuum is a hard stiff pedal. You can usually simulate this with the engine at idle, pump the brakes several times. Usually the system can't keep up and the pedal will get stiff because it ran out of vacuum.
One of the symptoms of a bad master cylinder is the pedal slowly going to the floor. If the area between the master cylinder and the booster looks wet, I would replace the master cylinder.
A symptom of poor vacuum is a hard stiff pedal. You can usually simulate this with the engine at idle, pump the brakes several times. Usually the system can't keep up and the pedal will get stiff because it ran out of vacuum.
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thanx for that info,
If the orings did become unseated will they seat back down with the wiggle.. If not is there a difference in quality of kits.. Mine was about 60$ canaidian.. Its really starting to irritate me ..
Also. how do i tell if the vacume problem is the booster or the vacume pump..
Thanx very much..
If the orings did become unseated will they seat back down with the wiggle.. If not is there a difference in quality of kits.. Mine was about 60$ canaidian.. Its really starting to irritate me ..
Also. how do i tell if the vacume problem is the booster or the vacume pump..
Thanx very much..
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Joined: Jan 2001
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From: Virginia
Wiggling the caps may or may not fix the leak, it's just something to try.
Usually if you have a booster problem, the problem is there all the time, and or you hear a hissing sound as you press the pedal.
If your vacuum system is weak or has a leak, you will have good brakes for the first one or two hits, and then the brake pedal will get stiff, because it has ran out of vacuum.
Usually if you have a booster problem, the problem is there all the time, and or you hear a hissing sound as you press the pedal.
If your vacuum system is weak or has a leak, you will have good brakes for the first one or two hits, and then the brake pedal will get stiff, because it has ran out of vacuum.
