16# Radiator cap ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bill72BB · 01-13-2005, 11:10 PM

I've been using a 16 # radiator cap since I replaced the radiator and waterpump and hose's about 2 years ago . all of a sudden I am losing water out the over flow .
I replaced the cap with a new 16# and it still is doing it .

Any suggestions .
Thanks

jhow66 · 01-13-2005, 11:17 PM

How much water are you losing? Are you having to add?

**Stocker** · 01-13-2005, 11:19 PM

Bill, 16# ought to be right - at least that's all I've ever used. Off the top of my head, what about a blown head gasket, allowing the engine to over-pressurize the cooling system?

Bill72BB · 01-13-2005, 11:22 PM

Yes , I,ve had to add some water to top it off ,
Don't think it is a blown Head gasket , oil is ok and it isn't smoking and no anti freeze smell at the exhaust only when I stop after a long drive it leaks out the overflow hose .The Temp is always normal .

**Stocker** · 01-13-2005, 11:39 PM

Just to clarify - do you have a recovery tank? Is it puking into the tank, or overflowing the tank, or no tank, or.... ?

Bill72BB · 01-13-2005, 11:45 PM

Quote:

Originally Posted by Stocker

Just to clarify - do you have a recovery tank? Is it puking into the tank, or overflowing the tank, or no tank, or.... ?

I have the recovery tank and it overflowing out of that overflow tube .Now that I am writing this I better check the return line from the recovery tank.

**Stocker** · 01-13-2005, 11:51 PM

Of course it needs to have a cap for a sealed system, but you were good for two years... wouldn't think you'd get a second bad one, but stranger things have happened.

01-13-2005, 11:10 PM	#1
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	16# Radiator cap ?? I've been using a 16 # radiator cap since I replaced the radiator and waterpump and hose's about 2 years ago . all of a sudden I am losing water out the over flow . I replaced the cap with a new 16# and it still is doing it . Any suggestions . Thanks __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

01-13-2005, 11:17 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	How much water are you losing? Are you having to add? __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

01-13-2005, 11:19 PM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,595	Bill, 16# ought to be right - at least that's all I've ever used. Off the top of my head, what about a blown head gasket, allowing the engine to over-pressurize the cooling system? __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

01-13-2005, 11:22 PM	#4
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	Yes , I,ve had to add some water to top it off , Don't think it is a blown Head gasket , oil is ok and it isn't smoking and no anti freeze smell at the exhaust only when I stop after a long drive it leaks out the overflow hose .The Temp is always normal . __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

01-13-2005, 11:39 PM	#5
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,595	Just to clarify - do you have a recovery tank? Is it puking into the tank, or overflowing the tank, or no tank, or.... ? __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

01-13-2005, 11:51 PM	#7
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,595	Of course it needs to have a cap for a sealed system, but you were good for two years... wouldn't think you'd get a second bad one, but stranger things have happened. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay



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