coolant pressure on 1996 Chevrolet Lumina

How long should coolant pressure hold when testing it with a pump-up pressure tester? My system is a 15 psi. I'm losing coolant very slowly and the pressure fades off from 15 psi to 10 psi over a half hour. Should it?

by in Eau Claire, WI on April 24, 2011
1 answer 1 comment
ANSWER by on April 24, 2011
That may just be normal leakage of the tool so check that first. My Stant pressure tester would hold pressure for an hour without dropping but two other fellows at work see their pressure tester loose 5 psi in i/2 hour.
COMMENT by on April 26, 2011
Thanks for the answer. I suspect that's why mine bleeds down too. I replaced an upper radiator hose that was pretty soft so I'm hoping it stops losing coolant now.
Related Items:
New head gaskets, new radiator...still found coolant in radiator. New oil, filter. Pressure check ok. Check engine light keeps comming on. New gas cap and replaced light sensor twice. Mechanic ...
Chevy Lumina 95 3.1L engine's lower intake manifold has only gaskets to seal the front and back cylinder heads. But, there is the ridge area of lower intake between the two slopes on top of the two...
The coolant level indicator on the dashboard is always on despite having the radiator and the resovoire filled to the brim
The temp gauge will go all the way to hot & then, if I rev the engine while it's in neutral, it will drop back to normal level. This may happen everyday or once every 2 weeks. I never know. I ha...

Related Content