Mechanics

WON'T START, PRESSURE BUILT UP IN RADIATOR.......

1995 Oldsmobile Cutlass • 13,000 miles

The car will run great for a month or two then will not start and it has built up pressure in the radiator. Let the car sit for a day or two after removing the radiator cap, yes after it has cooled off. Then the car will run great again for another month or so. What may be the cause of this?
Avatar
Peanuts54
September 18, 2012.




Do you have coolant losses or overheating issues?
When pressure builds up, does the coolant level in radiator drop?
Have you checked for trouble codes?

KHLow2008
Sep 18, 2012.
If there was too much pressure in the radiator it would pop the cap and the reservoir would fill up. When the problem occurs, if it cranks good but won't start, have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check fuel pressure.

JDL
Sep 18, 2012.
Hey khlow, no answer there when I started typing. Have a good day.
AD

JDL
Sep 18, 2012.
No problem. The more the merrier, JDL.

Same to you.

KHLow2008
Sep 18, 2012.

AD