pugads650

im getting about 60psi when the car is cold once it warms up the oil pressure drops to 10-12psi at idle the car also feels slower once it warms i can spin the tires just by flooring it in first gear when it is cold but once it warms up it feels like it lost 50-100hp what could be causing this

list of mods
bbk 58mm throttle body
edelbrock shorty headers
comp cams camshaft
comp cams rocker arms
moroso cold air intake
ported intake

pugads650

anybody

also if i go over 4-5000 rpm the check engine light comes on

Demon's Camaro

Although this is worst case scenario: you could have worn out bearings.

Also your pickup tube on the oil pump may have fallen off.

Either way fix it fast or you will be buying a new engine.

VK

ya, better stop beating on it. Put a manual oil pressure gauge on it, that will tell you really quick on the oil. Then go from there. But sounds like you'll be taking **** apart.

OBE1 95Z28

Get your code scanned to know what you're dealing with. Oil pressure will always drop once it's warmed up, especially now that it's winter. I believe 10 -12 psi is within spec at idle per GM. What is read at 3,000 rpm when it's warm?

pugads650

does the motor have to be taken apart if it is bearings also is it common for the oil tube to fall out thanks

pugads650

any more suggestions to what the problem could be thanks

jonathan

Guest47904

You're problem is unrelated to your oil pressure which is no problem. If the problem with performance were the same problem with oil pressure, the engine would have torn itself apart by now.

Next, it would be nice to know what year you have and what accessories as well as where you are located.

You say after it warms up but is it when it goes into closed loop? What type of maintenance has been done? ie filters, cleaned anything like IAC, EGR, TB, injectors, done any kind of tune up work, like wires, plugs or O2s?

Noticed any gradual decrease in fuel mileage? Do you have fuel present in the oil?

To many questions, not enough answers

pugads650

the car has not had a tune or a tune i did change the oil and the filter and did the sea foam thing but it didnt help 400 miles ago and the oil does have a gas smell to it

and im getting very bad gas mileage about 180-190 a tank

jsetzer

Haha, thats not bad. New motor I have gone through almost 4 tanks and barely have 400 miles on it

Do you hear anything odd? When I spun my 2 rod bearings I still had @ 10psi at idle (only reason the car made it home) and would build to 30ish up top.

I would say change the oil again and look for metal. Def don't drive it much until you figure out what is up. Catch a bearing early and you can get by with just replacing bearings. Catch it late and you may be building a whole new motor.

pugads650

im running castrol 5w-30 do you think this is to thin there is also a gas smell to it im getting 20psi at idle and at 1500-2k rpm im getting 40 psi do you think i switch to a thicker oil

ABA383

Maybe I missed something, but have you tuned the computer for your mods? what are your cam specs? You definitely want to tune for your cam swap...

--Alan

pugads650

the guy i bought the car from told me the car has a cam but couldnt the paper work from the first owner the sounds like it has a cam in it and it idles like a carburated car

pugads650

...

pugads650

...