Brake fluid LEAK!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bigru · 02-16-2014, 04:40 PM

I bought a CPP brake booster master cylinder kit to go with their disk brake kit. Can someone tell me what would cause it to LEAK between the MC and Booster? I can't stand leaks and of course the fluid ate up my Por-15 on the frame. Please help.

Thanks
Rudy

Bigru · 02-16-2014, 04:41 PM

Pic

tincan1966 · 02-16-2014, 04:57 PM

The master cylinder is defective- the rear seal is bad.

Bigru · 02-16-2014, 05:19 PM

What the hell, it's brand new!!

KJSR · 02-16-2014, 05:26 PM

X2 what tincan said and you shouldn't be driving it that way....

*Sharps40* · 02-16-2014, 05:29 PM

I didn't think anything but a hammer would damage POR15!

tincan1966 · 02-16-2014, 05:31 PM

Quote:

Originally Posted by Bigru

What the hell, it's brand new!!

New means new, New does not mean GOOD, Sorry but that's how it is.
I'd be on the phone pronto with them if you recently purchased it.

Bigru · 02-16-2014, 05:37 PM

Quote:

Originally Posted by Sharps40

I didn't think anything but a hammer would damage POR15!

Me too

Bigru · 02-16-2014, 05:39 PM

Quote:

Originally Posted by tincan1966

New means new, New does not mean GOOD, Sorry but that's how it is.
I'd be on the phone pronto with them if you recently purchased it.

I'll be on the phone first thing in the morning, thanks. At first I was think the brake rod might be too long.

**pimpston65** · 02-16-2014, 09:48 PM

i was told by a senior forum member that DOT 5 brake fluid wont eat the paint, but you have to only run that kind once you switch as its not compatible.

Reyals Bemus · 02-16-2014, 10:08 PM

CPP sucks. By and large.

**pdxhall** · 02-16-2014, 11:26 PM

Quote:

Originally Posted by Reyals Bemus

CPP sucks. By and large.

Sorry, but I don't agree. I've had very good luck with them.

Bigru · 02-16-2014, 11:43 PM

I just sent an email to Mario @ CPP, explaining the issue with pics. Lets see how they handle it.

tincan1966 · 02-17-2014, 08:11 AM

Quote:

Originally Posted by pdxhall

Sorry, but I don't agree. I've had very good luck with them.

Same here, only had a couple experiences with them and they were all good.

My only complaint was lack of ANY instructions with a disc brake conversion kit we bought once - just a box of parts and a bag of bolts! LOL! I wasn't impossible, but with a straight axle kit, there's a combination of spacers to figure out.....

R_W · 02-17-2014, 10:35 PM

I bought a disc brake kit for my Camaro, and had the exact same issue. Can't remember who made it or where I bought it. When I called, they said, "the vendor who rebuilds those for us has had some quality issues lately." Wow, thanks. I didn't have patience for the send it back then send me another (that also might leak). So I bought a seal kit at the local parts store, a hone, and rebuilt it myself. At least then I knew it was right.

Bigru · 02-17-2014, 10:44 PM

Quote:

Originally Posted by R_W

I bought a disc brake kit for my Camaro, and had the exact same issue. Can't remember who made it or where I bought it. When I called, they said, "the vendor who rebuilds those for us has had some quality issues lately." Wow, thanks. I didn't have patience for the send it back then send me another (that also might leak). So I bought a seal kit at the local parts store, a hone, and rebuilt it myself. At least then I knew it was right.

I might have to do the same thing, sent an email yesterday and still no response.

**Captainfab** · 02-18-2014, 01:27 AM

That's why I prefer to buy as many of my parts as possible local. I don't have to ship back and forth for warranty issues.

02-16-2014, 04:40 PM	#1
Bigru Registered User Join Date: Mar 2013 Location: Missouri City, Tx Posts: 321	Brake fluid LEAK!! I bought a CPP brake booster master cylinder kit to go with their disk brake kit. Can someone tell me what would cause it to LEAK between the MC and Booster? I can't stand leaks and of course the fluid ate up my Por-15 on the frame. Please help. Thanks Rudy Attached Images __________________ 1965 Short Fleet http://67-72chevytrucks.com/vboard/s...d.php?t=637478 1983 Short Fleet (Under construction for my 13 year old son) 2008 GMC Denali 2012 Harley Roadglide Follow me on Instagram: Ru_django

02-16-2014, 04:41 PM	#2
Bigru Registered User Join Date: Mar 2013 Location: Missouri City, Tx Posts: 321	Re: Brake fluid LEAK!! Pic Attached Images __________________ 1965 Short Fleet http://67-72chevytrucks.com/vboard/s...d.php?t=637478 1983 Short Fleet (Under construction for my 13 year old son) 2008 GMC Denali 2012 Harley Roadglide Follow me on Instagram: Ru_django

02-16-2014, 04:57 PM	#3
tincan1966 Registered User Join Date: Oct 2010 Location: Independence,KS Posts: 1,477	Re: Brake fluid LEAK!! The master cylinder is defective- the rear seal is bad.

02-16-2014, 05:19 PM	#4
Bigru Registered User Join Date: Mar 2013 Location: Missouri City, Tx Posts: 321	Re: Brake fluid LEAK!! What the hell, it's brand new!! __________________ 1965 Short Fleet http://67-72chevytrucks.com/vboard/s...d.php?t=637478 1983 Short Fleet (Under construction for my 13 year old son) 2008 GMC Denali 2012 Harley Roadglide Follow me on Instagram: Ru_django

02-16-2014, 05:26 PM	#5
KJSR Registered User Join Date: Aug 2012 Location: Tooele, Utah Posts: 327	Re: Brake fluid LEAK!! X2 what tincan said and you shouldn't be driving it that way.... __________________ 1936 Chevrolet 1/2t 1964 Chevrolet C10 1964 Chevrolet C10 (sons) 1965 Chevrolet K10 Suburban 1969 Chevrolet C10 1937 Plymouth P4

02-16-2014, 05:29 PM	#6
Sharps40 Account Suspended Join Date: Oct 2012 Location: here Posts: 2,408	Re: Brake fluid LEAK!! I didn't think anything but a hammer would damage POR15!

02-16-2014, 09:48 PM	#10
pimpston65 Senior Member Join Date: Aug 2013 Location: corktown,mi. Posts: 5,194	Re: Brake fluid LEAK!! i was told by a senior forum member that DOT 5 brake fluid wont eat the paint, but you have to only run that kind once you switch as its not compatible.

02-16-2014, 10:08 PM	#11
Reyals Bemus Registered User Join Date: Dec 2007 Location: Billerica, MA Posts: 329	Re: Brake fluid LEAK!! CPP sucks. By and large.

02-16-2014, 11:43 PM	#13
Bigru Registered User Join Date: Mar 2013 Location: Missouri City, Tx Posts: 321	Re: Brake fluid LEAK!! I just sent an email to Mario @ CPP, explaining the issue with pics. Lets see how they handle it. __________________ 1965 Short Fleet http://67-72chevytrucks.com/vboard/s...d.php?t=637478 1983 Short Fleet (Under construction for my 13 year old son) 2008 GMC Denali 2012 Harley Roadglide Follow me on Instagram: Ru_django

02-17-2014, 10:35 PM	#15
R_W Registered User Join Date: May 2005 Location: Hendersonville, TN Posts: 134	Re: Brake fluid LEAK!! I bought a disc brake kit for my Camaro, and had the exact same issue. Can't remember who made it or where I bought it. When I called, they said, "the vendor who rebuilds those for us has had some quality issues lately." Wow, thanks. I didn't have patience for the send it back then send me another (that also might leak). So I bought a seal kit at the local parts store, a hone, and rebuilt it myself. At least then I knew it was right. __________________ ______________________ "Daddy, that truck's not red" Build Thread: TN 20 Build

02-18-2014, 01:27 AM	#17
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Brake fluid LEAK!! That's why I prefer to buy as many of my parts as possible local. I don't have to ship back and forth for warranty issues. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE



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