2005 Chevrolet Cobalt Vavle noise

TM1750

MEMBER
2005 CHEVROLET COBALT
2.2L
4 CYL
FWD
AUTOMATIC
130,000 MILES

Changed timing chain because valve/chain noise. Motor started still had small valve noise. Removed valve cover cranked motor no ignition seen no oil come to valves. Do I have a bad oil pump? Don't know where to check oil pressure besides sensor

Monday, May 19th, 2014 AT 2:54 PM

6 Replies

HMAC300

MECHANIC
48,601 POSTS

Take the sensor out it will be the easiest place to hook up. Shold be 50 psi minimum at idle check for a stuck pressure regulator

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Monday, May 19th, 2014 AT 4:18 PM

TM1750

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3 POSTS

Is the sensor the only place to check oil pressure? Should I see oil with the motor cranking?

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Monday, May 19th, 2014 AT 4:26 PM

HMAC300

MECHANIC
48,601 POSTS

I really don't have a schematic of the 2.2 for other places to check it will start then maybe quit due to no oil pressure showing

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Monday, May 19th, 2014 AT 4:31 PM

HMAC300

MECHANIC
48,601 POSTS

Ya you should see some oil

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Monday, May 19th, 2014 AT 4:32 PM

TM1750

MEMBER
3 POSTS

I don't see any oil coming to the top when I crank the engine (valve cover off, ignition pulled) also valve cover had no oil dripping when I removed it. Without checking pressure can I assume the oil pump let go.