Rad hose collapsing after water pump install
07-23-2012 | 04:23 PM
#1
Thread Starter
Registered User
Joined: Jul 2012
Posts: 2
Rad hose collapsing after water pump install
First let me list what all has been checked and replaced, ive checked the return hose to the reservoir, no blockage, new cap from my job at Griffin Rad, 2 of them, new hoses, all rad hoses!, Bled the system per proper procedure, about 90 times, lol, Now for when it happens, after driving it normally to operating temp, upon cool down period is when it sucks shut, if anyone has any ideas of what to try now please let me hear them
This is all happening to a 1997 ss camaro. Oh new thermostat also.
07-23-2012 | 06:17 PM
#2
Registered User
Joined: Mar 1999
Posts: 2,064
From: Kernersville, NC
Re: Rad hose collapsing after water pump install
Which hose is collapsing? Upper? lower? When you open the radiator cap, does the hose reform to normal? What is the level in the radiator and overflow reservoir after opening the cap? Sounds like some kind of flow problem(blockage) and you are pulling a vacuum in the system somewhere.....but I'm not completely sure of that. Does it overheat when driving now? What is the temp when cruising on the highway?
Last edited by ACE1252; 07-23-2012 at 07:25 PM.
07-23-2012 | 06:48 PM
#4
Administrator
Joined: Nov 1998
Posts: 70,853
From: Hell was full so they sent me to NJ
Re: Rad hose collapsing after water pump install
First let me list what all has been checked and replaced, ive checked the return hose to the reservoir, no blockage, new cap from my job at Griffin Rad, 2 of them, new hoses, all rad hoses!, Bled the system per proper procedure, about 90 times, lol, Now for when it happens, after driving it normally to operating temp, upon cool down period is when it sucks shut, if anyone has any ideas of what to try now please let me hear them This is all happening to a 1997 ss camaro. Oh new thermostat also.Please post a topic only on one forum and take the time to respond to people who try to help you. Do not start a new thread.
07-23-2012 | 07:31 PM
#5
Registered User
Joined: Mar 1999
Posts: 2,064
From: Kernersville, NC
Re: Rad hose collapsing after water pump install
This is Injuneer's response to the other thread....
This makes the most sense. Replacing the hose from the radiator neck to the reservoir take might fix it. Maybe some kind of a one way blockage in the hose. Might also be that he has the wrong type rad cap.....might have a 18psi cap that only is "one" way.
If the above is the case, his overflow tank level will rise over time if he is topping off the rad after each event. If he is not topping off the rad, the overflow level would remain constant "hot level"(even when cold) and his low coolant light may cycle on and off depending on rad fluid level.
Is it possible the rubber hose from the cap/neck to the reservoir is also collapsing under vacuum, preventing the coolant from flowing up the hose? The stock hose is fairly flexible.
It's obviously allowing coolant to flow out of the reservoir as it expands and heats up, but not flowing coolant back into the radiator as it cools down and contracts.
It's obviously allowing coolant to flow out of the reservoir as it expands and heats up, but not flowing coolant back into the radiator as it cools down and contracts.
If the above is the case, his overflow tank level will rise over time if he is topping off the rad after each event. If he is not topping off the rad, the overflow level would remain constant "hot level"(even when cold) and his low coolant light may cycle on and off depending on rad fluid level.
Last edited by ACE1252; 07-23-2012 at 07:37 PM.
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
10-31-2016 11:09 AM