Oil in the intake and a fried hose! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Chris49066SS · 12-13-2020, 02:26 PM

Today I found dirty sludgy oil had pooled in the air intake tube where the filter connects to it, and oil film all throughout the tube. My catch can has been bone dry for several months and upon looking behind the manifold I saw and felt the hose had been deformed. It has a huge bulge in it and has a different, softer texture. Has anyone got a clue how or why this happened? Where its like that is nowhere near the headers. Do I just need a new hose? Its still on and there aren't any holes in it

InFiD3ViL · 12-13-2020, 02:49 PM

That's exactly what happened to my brake booster hose. The one that connects right behind the manifold near the oil pressure sensor. It was really soft and swollen in one spot and had developed pinhole leaks which eventually triggered a P0556. It's weird since it's not really near any major extreme heat sources. It never caused any other outward symptoms of a vacuum leak though, which I thought was strange.

Just speaking generally here, but I assume any loss of function on a vacuum system line is going to cause a loss of efficiency in the PCV system. Seeing as you are running the LOD intake, I am not really sure about your PCV setup/routing.

0stones0 · 12-13-2020, 03:14 PM

If not from a heat source, then the deformation is more than likely from vacuum that was hindered or blocked in some way. The pic, to me, looks like the hose was collapsed for some time and then held the shape. Only an opinion.

1JEWLDSSRS · 12-13-2020, 04:42 PM

It almost looks like it got pinched somewhere, or was bent a little to cause a kink in it to get warm and soften and maybe collapse some. And as for the oil in your intake tube, I had that happen as well, I pulled the small hose from my passenger side valve cover that went to the intake tube off and capped the fitting on the intake tube and left the hose from the valve cover just laying along the valve cover and no more oil was in my tube at the filter.

Chris49066SS · 12-14-2020, 04:21 PM

Thanks a lot for the input guys, I am just going to replace the hose and hope it doesnt happen again. By the time I can hopefully get back over to GPI for my spring refresh/replacement I can always have them look at it if it keeps happening.

1JEWLDSSRS · 12-14-2020, 04:29 PM

You're welcome bro, good luck. So far I haven't had that hose issue yet. Now the next time I take her out for a cruise, I guess I need to look at it. lol.

Machh5 · 12-15-2020, 12:39 PM

Synthetic oils can attack hoses like this.

12-13-2020, 02:26 PM	#1
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,634	Oil in the intake and a fried hose! Today I found dirty sludgy oil had pooled in the air intake tube where the filter connects to it, and oil film all throughout the tube. My catch can has been bone dry for several months and upon looking behind the manifold I saw and felt the hose had been deformed. It has a huge bulge in it and has a different, softer texture. Has anyone got a clue how or why this happened? Where its like that is nowhere near the headers. Do I just need a new hose? Its still on and there aren't any holes in it Attached Images __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371

12-13-2020, 02:49 PM	#2
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,575	That's exactly what happened to my brake booster hose. The one that connects right behind the manifold near the oil pressure sensor. It was really soft and swollen in one spot and had developed pinhole leaks which eventually triggered a P0556. It's weird since it's not really near any major extreme heat sources. It never caused any other outward symptoms of a vacuum leak though, which I thought was strange. Just speaking generally here, but I assume any loss of function on a vacuum system line is going to cause a loss of efficiency in the PCV system. Seeing as you are running the LOD intake, I am not really sure about your PCV setup/routing. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

12-13-2020, 03:14 PM	#3
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,205 View My Garage	If not from a heat source, then the deformation is more than likely from vacuum that was hindered or blocked in some way. The pic, to me, looks like the hose was collapsed for some time and then held the shape. Only an opinion. __________________

12-13-2020, 04:42 PM	#4
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	It almost looks like it got pinched somewhere, or was bent a little to cause a kink in it to get warm and soften and maybe collapse some. And as for the oil in your intake tube, I had that happen as well, I pulled the small hose from my passenger side valve cover that went to the intake tube off and capped the fitting on the intake tube and left the hose from the valve cover just laying along the valve cover and no more oil was in my tube at the filter. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

12-14-2020, 04:21 PM	#5
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,634	Thanks a lot for the input guys, I am just going to replace the hose and hope it doesnt happen again. By the time I can hopefully get back over to GPI for my spring refresh/replacement I can always have them look at it if it keeps happening. __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371

12-14-2020, 04:29 PM	#6
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	You're welcome bro, good luck. So far I haven't had that hose issue yet. Now the next time I take her out for a cruise, I guess I need to look at it. lol. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

12-15-2020, 12:39 PM	#7
Machh5 Account Suspended Drives: Camaro Join Date: Jun 2020 Location: US Posts: 120	Synthetic oils can attack hoses like this.