Er possible issue.....

[Behold81]

So as some know I did a cam change recently. Since u have covered about 200 miles maybe a bit less. I have been taking it relatively easy tuning in the lower end of the rpm for fuel. Today I got to the petrol station after a reasonably light cruise home and filled up. On restarting and pulling off down the road the oil light came on.

The car sounded a bit loud at this point. I pulled over I tried to identify the issue and can't find any obvious problems. The car was quiet in the engine bay but not out side.

Being a road away from home I limped it back at 1200 rpm. I have checked the engine with a stethoscope and only light ticks of a running engine can be heard from all places. Top of block, across the rockers, each exhaust outlet.

The light turned of briefly and then came back.

It seems to be running but not sure what is going wrong. Do I have a shot oil pump? Sensor? Or should I be looking at something more serious.

What should I check for?

[mfp4073]

I'm not much help TBH, but when my oil pressure sensor went the journey, the oil pressure gauge went to zero and didn't move after that. The engine did not make any additional noises at that time.
If there is plenty of oil on the dip stick, that obviously that is a good sign!
I'm sure the wise ones will be along and advise you with the rest of your questions.

John

[Behold81]

Plenty of oil on the dip stick. And seems like oil is hitting up to the rockers. Not pulled them yet to look.

[Boosted LS1]

Did you remove the oil pump and change sprockets or was it just the cam you changed?

[Behold81]

Boosted LS1 said:

Did you remove the oil pump and change sprockets or was it just the cam you changed?

no just cam. Oil pump and crank sprocket stayed put.

[stevieturbo]

First off, get a mechanical or known working gauge on there to see if it actually has oil pressure etc.

If you didnt touch or unbolt etc the pump, pickup or anything there, then it would be hard to suggest the problem could lie there. Although obviously couldnt rule it out either.

Find out what you have first though, only run the engine long enough to do a quick test

[Behold81]

Where is best to attach a gauge to. Where the existing sender is or is there a better or easier to get to place?

[stevieturbo]

Anywhere that is accessible really. OEM sensor location is as good as any, or tee'ing into your supercharger feed line should do ok too.

[ArnieVXR]

I'd have thought a notably increase in engine noise coinciding with an indicated oil pressure issue would indicate something significant. What sort of noise is it?

[Boosted LS1]

I'd agree with Stevie and fit a mechanical guage to verify what's happening when you drive the car. You may have flow but not pressure on some occasions. You can tap into an oil gallery low down at the front/ passenger side of the block adjacent to the oil pump.

[Behold81]

ArnieVXR said:

I'd have thought a notably increase in engine noise coinciding with an indicated oil pressure issue would indicate something significant. What sort of noise is it?

Well that's the thing

Knocking/ticking. It seems to be rear of engine but can't be heard in a scope. Might just be exhaust noise with the overlapping cam and paranoia.

[Behold81]

Bought a oil pressure gauge and compression tester. Both worth looking at.

[Boosted LS1]

Did you have any issues inserting the cam and did it spin relatively freely? I've seen 2 ls2 engines where number 4 cam bearing has walked rearwards slightly. This exposes an oil gallery.

[fred bloggs]

I recently had a pressure switch fail . It did chuck a cel though. Seems a bit of common fault for this senser.
Hope it's not more serious.

[Xpuffin]

I have a leak down tester here if you need it.

[stevieturbo]

Boosted LS1 said:

Did you have any issues inserting the cam and did it spin relatively freely? I've seen 2 ls2 engines where number 4 cam bearing has walked rearwards slightly. This exposes an oil gallery.

Had cam bearings walk myself....it's a bit of a ballix!

But need to verify actual pressure first

[Behold81]

Well my oil pressure gauge turns up by Friday and my compression tester. Will run both and see what they give. Could do with a scope to check in the cylinder really.

Cam inserted really easily. And spun freely. Barely caught it going out or in as I managed to keep it lifted and went slow

Hoping it's simple. But let's see. If it is major bottom end issues. I guess that's just my decision to rebuild as a forged bottom end. But let's hope not.

[Boosted LS1]

Your most likely culprit is a sensor. Then an oil pick up seal or a bearing leakage. If your gauge confirms an issue neither will be expensive fixes labour wise.

[Behold81]

Boosted LS1 said:

Your most likely culprit is a sensor. Then an oil pick up seal or a bearing leakage. If your gauge confirms an issue neither will be expensive fixes labour wise.

I'll let you know. Thanks so far.

[stevieturbo]

Behold81 said:

Well my oil pressure gauge turns up by Friday and my compression tester. Will run both and see what they give. Could do with a scope to check in the cylinder really.

Cam inserted really easily. And spun freely. Barely caught it going out or in as I managed to keep it lifted and went slow

Hoping it's simple. But let's see. If it is major bottom end issues. I guess that's just my decision to rebuild as a forged bottom end. But let's hope not.

USB bore scopes are cheap...although not really sure what you're expecting that to tell you, or indeed the leakdown tester.

If the symptoms are no oil pressure and ticking...then it is a good chance there is no/low oil pressure and the ticking is the lifters.

Again, I'd be checking the oil feed to the blower....easy access point and it would let you see if there is a good quantity of oil getting to there at least ( blower doesnt need a lot though )