Oil leak on dyno?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

onequicks10 · 02-16-2022, 05:10 PM

Hello! I have a 2022 ZL1 that I recently put Kooks longtubes, Rotofab cold air intake, and Borla exhaust on. Well this afternoon I had it dynotuned and the first pull went perfect for baseline run, no issues. Then he adjusted air/fuel for the lean codes, and removed the cats from the PCM. Second pull(581hp@6500 RPMS) the front main starting spraying oil at the top of the RPM range. He shut it down, cleaned it all up and the leak is gone at idle. So lthen he asked me what he wanted me to do(I had a hour drive home), and I just said cruise it at 70 for a few miles then punch it to 110 and let it decel, just to see if it leaked at all during driving conditions. Nothing, we looked it over THOROUGHLY, I drove it home and it runs perfect, no leaks no nothing.

Has anyone heard of this?? Any idea what could have happened, what should I do before trying to finish the tune.

ZMEnow · 02-16-2022, 09:12 PM

Quote:

Originally Posted by onequicks10

Hello! I have a 2022 ZL1 that I recently put Kooks longtubes, Rotofab cold air intake, and Borla exhaust on. Well this afternoon I had it dynotuned and the first pull went perfect for baseline run, no issues. Then he adjusted air/fuel for the lean codes, and removed the cats from the PCM. Second pull(581hp@6500 RPMS) the front main starting spraying oil at the top of the RPM range. He shut it down, cleaned it all up and the leak is gone at idle. So lthen he asked me what he wanted me to do(I had a hour drive home), and I just said cruise it at 70 for a few miles then punch it to 110 and let it decel, just to see if it leaked at all during driving conditions. Nothing, we looked it over THOROUGHLY, I drove it home and it runs perfect, no leaks no nothing.

Has anyone heard of this?? Any idea what could have happened, what should I do before trying to finish the tune.

Front main as in timing cover? Never heard of that on a 5th gen, you need to post on the 6th Gen forum. On a quick note, leaks don’t fix themselves.

Nmbr1gmfan · 02-17-2022, 10:46 AM

excessive crankcase pressure.

ZMEnow · 02-17-2022, 12:50 PM

Quote:

Originally Posted by Nmbr1gmfan

excessive crankcase pressure.

No Pullies, so standard boost so that shouldn't happen unless they got some massive block with the borla.

KaBoom1701 · 02-18-2022, 11:23 AM

Did u install a crankcase breather in lieu of of oil cap to relive excessive oil pressure?

ZMEnow · 02-18-2022, 02:03 PM

Quote:

Originally Posted by KaBoom1701

Did u install a crankcase breather in lieu of of oil cap to relive excessive oil pressure?

Standard boost that shouldn't be an issue..

hammdo · 02-18-2022, 04:26 PM

Quote:

Originally Posted by ZMEnow

Front main as in timing cover? Never heard of that on a 5th gen, you need to post on the 6th Gen forum. On a quick note, leaks don’t fix themselves.

Probably this. Many put the LS3 seal in to replace the stock one. Ck camaro6.com

-Don

roh · 02-18-2022, 04:35 PM

Quote:

Originally Posted by ZMEnow

Standard boost that shouldn't be an issue..

Maybe shouldn't be, but I can't think of a better explanation.

Very new car, maybe the rings aren't totally sealing yet. Or some other issue new to that model year. Easy enough to measure crankcase pressure.

.

FASTFATBOY · 02-18-2022, 06:35 PM

Did you pull the dipstick tube to put in the headers? I bet that's your leak.

ZMEnow · 02-18-2022, 07:04 PM

Quote:

Originally Posted by FASTFATBOY

Did you pull the dipstick tube to put in the headers? I bet that's your leak.

Then it would still be leaking, Especially on his way home and he said it isn’t.

Vicster · 02-19-2022, 08:33 PM

Quote:

Originally Posted by Nmbr1gmfan

excessive crankcase pressure.

I think it is excessive crankcase pressure also!

I use the CFM breather with check valve and have had no more issues, it only vent excess pressure.

https://www.amazon.com/CFM-Performan.../dp/B019QTEWIQ

FASTFATBOY · 02-20-2022, 10:01 AM

Quote:

Originally Posted by ZMEnow

Then it would still be leaking, Especially on his way home and he said it isn’t.

Mine only leaked under WOT boost, chased my tail for a minute on that one.

roh · 02-20-2022, 11:59 AM

Quote:

Originally Posted by FASTFATBOY

Mine only leaked under WOT boost, chased my tail for a minute on that one.

Yeah but that leak would be nowhere near the front crank seal.

FASTFATBOY · 02-20-2022, 02:36 PM

Quote:

Originally Posted by roh

Yeah but that leak would be nowhere near the front crank seal.

True, I'd like to know

02-16-2022, 05:10 PM	#1
onequicks10 Drives: 2022 Camaro Zl1 Join Date: Jan 2022 Location: Ohio Posts: 16	Oil leak on dyno?? Hello! I have a 2022 ZL1 that I recently put Kooks longtubes, Rotofab cold air intake, and Borla exhaust on. Well this afternoon I had it dynotuned and the first pull went perfect for baseline run, no issues. Then he adjusted air/fuel for the lean codes, and removed the cats from the PCM. Second pull(581hp@6500 RPMS) the front main starting spraying oil at the top of the RPM range. He shut it down, cleaned it all up and the leak is gone at idle. So lthen he asked me what he wanted me to do(I had a hour drive home), and I just said cruise it at 70 for a few miles then punch it to 110 and let it decel, just to see if it leaked at all during driving conditions. Nothing, we looked it over THOROUGHLY, I drove it home and it runs perfect, no leaks no nothing. Has anyone heard of this?? Any idea what could have happened, what should I do before trying to finish the tune.

02-17-2022, 10:46 AM	#3
Nmbr1gmfan Drives: Fast Join Date: Feb 2010 Location: Sarasota, FL. Posts: 410	excessive crankcase pressure. __________________ http://www.youtube.com/watch?v=fPvVm...&feature=share New and improved non-violation sig vid!!

02-18-2022, 11:23 AM	#5
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,631	Did u install a crankcase breather in lieu of of oil cap to relive excessive oil pressure? __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

02-18-2022, 06:35 PM	#9
FASTFATBOY Account Suspended Drives: 2013 ZL1 Join Date: Nov 2018 Location: Mobile Al Posts: 525	Did you pull the dipstick tube to put in the headers? I bet that's your leak.