my burb is overheating - The 1947 - Present Chevrolet & GMC Truck Message Board Network

clipity · 02-29-2004, 11:45 PM

Let see Friday on my way to work steam started comming from under the hood.Get ot work pop the hood look around to see what is going on I dont find any leaks so I grab the upper hose and squeez it water comes out the front.Tighten up the clamp no more leaks that I can see fill with water.Drive home temp hits red zone then drops to the line past 210.Get up Saturday go buy new thermostat and upper hose as I pull the upper hose off I see that the neck is moving abit I clean around the neck and can see a crack.So I try to patch it dosent work cant soider it because its brass and aluminum.Sunday locate a new radiator go get it turns out to be the wrong one they have five different models go back get the right one.Put it in still heats up get mad come in to seek the wisdom of the forum.I also checked the oil for water and none found.

Thanks Derreck

J-Spec C10 · 03-01-2004, 01:18 AM

I noticed that you said no water in your oil, but you could still have a head gasket problem, if your exhaust is getting into your coolant system, it increases the pressure to the point that something has to give. Like your rad hose, then your rad. I think theres a test you can do to see if your coolant has exhaust gasses present, but im not sure where to go to have it done. Hopefully you find the problem before it gets worse, good luck!

KShortell · 03-01-2004, 01:24 AM

How's the lower hose? It's the one with the spring in it that keeps it from collapsing since it's the suction hose.

Are you using the right thermostat? Stock should be a 195 deg. unit. The stock operating range for 1986 (hopefully the same for your year) is between 188 deg and 206 deg F according to the factory service manual.

How's your radiator cap? If your system isn't maintaining enough pressure, the boiling point of the coolant will be reduced.

Good luck!
Kevin

Grim Reaper · 03-01-2004, 11:54 AM

Ohh I played this game last year. First off what motor?

My problem ended up being bad fan clutch and a radiator both pluged with bugs and inside.

clipity · 03-11-2004, 01:33 AM

Hooray its fixed,turns out the distibutor was loose and had advanced the dealer/mechanic I bought it from never tightened the bolt. Also the sending unit,fan (no clutch)and thermostat were wrong.So after $200.00 in new parts its fixed.

Thanks to everyone that responed to this post.
Derreck

KShortell · 03-11-2004, 12:14 PM

Cool!

It's always harder to solve when it turns out to be a combination of things...

02-29-2004, 11:45 PM	#1
clipity Big hands Big feet ohwell Join Date: Sep 2003 Location: North Highlands,CA Posts: 168	my burb is overheating Let see Friday on my way to work steam started comming from under the hood.Get ot work pop the hood look around to see what is going on I dont find any leaks so I grab the upper hose and squeez it water comes out the front.Tighten up the clamp no more leaks that I can see fill with water.Drive home temp hits red zone then drops to the line past 210.Get up Saturday go buy new thermostat and upper hose as I pull the upper hose off I see that the neck is moving abit I clean around the neck and can see a crack.So I try to patch it dosent work cant soider it because its brass and aluminum.Sunday locate a new radiator go get it turns out to be the wrong one they have five different models go back get the right one.Put it in still heats up get mad come in to seek the wisdom of the forum.I also checked the oil for water and none found. Thanks Derreck __________________ I only drive as fast as I can see!!! 89 Suburban 4x4 49 Willys flatbed 4x4 87 Banshee 88 Katana 1100

03-01-2004, 01:18 AM	#2
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	I noticed that you said no water in your oil, but you could still have a head gasket problem, if your exhaust is getting into your coolant system, it increases the pressure to the point that something has to give. Like your rad hose, then your rad. I think theres a test you can do to see if your coolant has exhaust gasses present, but im not sure where to go to have it done. Hopefully you find the problem before it gets worse, good luck! __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

03-01-2004, 01:24 AM	#3
KShortell Registered User Join Date: Oct 2003 Location: Chesapeake, VA Posts: 734	How's the lower hose? It's the one with the spring in it that keeps it from collapsing since it's the suction hose. Are you using the right thermostat? Stock should be a 195 deg. unit. The stock operating range for 1986 (hopefully the same for your year) is between 188 deg and 206 deg F according to the factory service manual. How's your radiator cap? If your system isn't maintaining enough pressure, the boiling point of the coolant will be reduced. Good luck! Kevin __________________ Semper Paratus

03-01-2004, 11:54 AM	#4
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Ohh I played this game last year. First off what motor? My problem ended up being bad fan clutch and a radiator both pluged with bugs and inside. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

03-11-2004, 01:33 AM	#5
clipity Big hands Big feet ohwell Join Date: Sep 2003 Location: North Highlands,CA Posts: 168	Hooray its fixed,turns out the distibutor was loose and had advanced the dealer/mechanic I bought it from never tightened the bolt. Also the sending unit,fan (no clutch)and thermostat were wrong.So after $200.00 in new parts its fixed. Thanks to everyone that responed to this post. Derreck __________________ I only drive as fast as I can see!!! 89 Suburban 4x4 49 Willys flatbed 4x4 87 Banshee 88 Katana 1100

03-11-2004, 12:14 PM	#6
KShortell Registered User Join Date: Oct 2003 Location: Chesapeake, VA Posts: 734	Cool! It's always harder to solve when it turns out to be a combination of things... __________________ Semper Paratus



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