When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Occaisionally when i step on the brakes the pedal will go to
the floor or little brake. However soon as I step on the brake
again it has full brakes and will be fine for awhile. Then after say 20 normal stops, i will get a no pedal again.
Fluid topped up and no apparent leaks.
Master cylinder maybe?
I would do the usual and check the brakes all four corners. Pull off the drums and make sure the wheel cylinders aren't blown. Check for any cracked rubber hoses ect. What kind of truck do you have? Some of the older trucks the master cylinder is a relatively inexpensive part. About 20 bucks depending on where you go. If this is the case it might be a good idea to just try that and see what happens. Otherwise you may want to start by just bleeding and flushing out the brake system starting from the farthest from the master cylinder working your way to the closest. In order RR, LR, RF, LF. Good luck, Derick.
People who say it can't be done should not interrupt the person doing it.