No Brakes! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Striker169 · 10-24-2005, 08:46 PM

Ok, so I got the truck running today, and I backed up brakes worked fine even screeched a little, put it in drive to go around the block and after about brakeing twice bam peddle to the floor like I just lost pressure. so I turn it off and wait push the pedle and bam pressure, so I go to start it again drive hit the brakes about twice bam peddle to the floor.

What is going on? my truck is now on the side of a road

and my driveway is at a slope so I cant just like coast in.

krue · 10-24-2005, 08:54 PM

How much fluid in the master cylinder? Any visible leaks? Power or manual brakes? Will they pump up?

**truckdude239** · 10-24-2005, 08:57 PM

front disc brakes rear drums power brakes? i would check for leakings do an full visual check frist. check the wheel clyiders make sure they are not blown check the master cyliders i don't think its an adjustment problem or it would do it all the time. i would bleed the whole system you might have air in it

A.P. · 10-24-2005, 09:20 PM

It sounds like your master cylinder is not working. When my master cylinder died, the brake pedal would drop to the ground. I had to pump the brake pedal a few times to get some pressure. Hope this helps.

Striker169 · 10-24-2005, 09:59 PM

Quote:

Originally Posted by A.P.

It sounds like your master cylinder is not working. When my master cylinder died, the brake pedal would drop to the ground. I had to pump the brake pedal a few times to get some pressure. Hope this helps.

thats what I am thinking

I have power brakes, with drums all the way around, new brake hardware shoes and brake cylenders. There were no leaks around the wheels, but I think that my MC is going out, and the crappy thing is that the lines to the prop valve are soo close to being rounded off bc of the PO.

shifty · 10-24-2005, 10:01 PM

Vice grips

Striker169 · 10-24-2005, 10:02 PM

Quote:

Originally Posted by shifty

Vice grips

hahaha such a PITA though but so true

jhwkns · 10-24-2005, 10:12 PM

Does your parking brake work? Could you use to move the truck into the driveway?

Striker169 · 10-24-2005, 11:02 PM

Quote:

Originally Posted by jhwkns

Does your parking brake work? Could you use to move the truck into the driveway?

nope its not adjusted I am going to try that tomorrow afternoon

Striker169 · 10-25-2005, 06:42 PM

Ok so quick question can/would it be safe to use a C-20 MC on a C-10 would it mess up the brake cylenders lines prop valve etc? I am going to get a new mc and brake lines from the MC to the Prop Valve today so I wanted to know before I go

**truckdude239** · 10-25-2005, 07:58 PM

NOPE just get the rpop vavle with oit

66`shortbed · 10-25-2005, 08:15 PM

yea sounds like the master cylinder, my g-pas truck did that once and all u can do is pump it for pressure

10-24-2005, 08:46 PM	#1
Striker169 Car O'Holic Join Date: Jan 2005 Location: Austin, Tx. Posts: 692	No Brakes! Ok, so I got the truck running today, and I backed up brakes worked fine even screeched a little, put it in drive to go around the block and after about brakeing twice bam peddle to the floor like I just lost pressure. so I turn it off and wait push the pedle and bam pressure, so I go to start it again drive hit the brakes about twice bam peddle to the floor. What is going on? my truck is now on the side of a road and my driveway is at a slope so I cant just like coast in.

10-24-2005, 08:54 PM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: No Brakes! How much fluid in the master cylinder? Any visible leaks? Power or manual brakes? Will they pump up? __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" Last edited by krue; 10-24-2005 at 08:56 PM. Reason: I reread the original post.

10-24-2005, 08:57 PM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: No Brakes! front disc brakes rear drums power brakes? i would check for leakings do an full visual check frist. check the wheel clyiders make sure they are not blown check the master cyliders i don't think its an adjustment problem or it would do it all the time. i would bleed the whole system you might have air in it

10-24-2005, 09:20 PM	#4
A.P. Black 72 Chevy Join Date: May 2002 Location: Los Angeles, California Posts: 662	Re: No Brakes! It sounds like your master cylinder is not working. When my master cylinder died, the brake pedal would drop to the ground. I had to pump the brake pedal a few times to get some pressure. Hope this helps.

10-24-2005, 10:01 PM	#6
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Re: No Brakes! Vice grips __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

10-24-2005, 10:12 PM	#8
jhwkns Registered Cruiser Join Date: May 2002 Location: Las Vegas NV Posts: 2,230	Re: No Brakes! Does your parking brake work? Could you use to move the truck into the driveway? __________________ I intend to live forever. So far, so good.

10-25-2005, 06:42 PM	#10
Striker169 Car O'Holic Join Date: Jan 2005 Location: Austin, Tx. Posts: 692	Re: No Brakes! Ok so quick question can/would it be safe to use a C-20 MC on a C-10 would it mess up the brake cylenders lines prop valve etc? I am going to get a new mc and brake lines from the MC to the Prop Valve today so I wanted to know before I go

10-25-2005, 07:58 PM	#11
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: No Brakes! NOPE just get the rpop vavle with oit

10-25-2005, 08:15 PM	#12
66`shortbed Registered User Join Date: Oct 2005 Location: saint charles, missouri Posts: 45	Re: No Brakes! yea sounds like the master cylinder, my g-pas truck did that once and all u can do is pump it for pressure

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