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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Nov 2012 Posts: 543 Shop Shark | | Shop Shark Joined: Nov 2012 Posts: 543 | At last report I'd had the system flushed. Then idled for 30 min and laser gun said 174 on the block. I called The Filling Station yesterday and was told by tech to idle with cap off to bleed air out... Did that and yes, small bubbles started coming up..then looked like steam but no hard boil. Water temp at the end was 185. Gauge is a 49..not a 56 so it's likely toast and needs to be replaced. I still dunno if I'm overheating or not...didn't like seeing steam coming off the water. Also not sure if gas gauge is right and ammeter is off too. Maybe need to replace the whole cluster... ? | | | | | Joined: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | Haven't you ever watched a tea kettle heat up? Or seen a bathroom faucet steam in a cool room?
Drill a 1/8" hole in a new thermostat and replace the radiator cap with a 160 and put it on and run it. Your worrying too much. | | | | | Joined: Nov 2012 Posts: 543 Shop Shark | | Shop Shark Joined: Nov 2012 Posts: 543 | Put in a new 160 thermostat Friday...why the 1/8" hole ? Easy to buy a new cap. Yes, I guess I do worry cuz I don't wanna fry the engine. Admittedly, I'm new at all this...so thanks for the help...  | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | The holes to let trapped air purge. ...pic... The last stat I purchased had a little check valve buit into the flange to do the same thing. | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I don't know what kind of rad cap you are getting but I would suggest not going over 7 lbs. A 4 lb cap would be good. | | |
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