Vacuum leak - Reduced engine power - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

AITI · 07-28-2015, 02:36 PM

No PCV valve. All flow is controlled from the fixed orifice PCV barb on the rear of the passenger side valve cover. PM me with info on the catchcan your running and how you had it connected. You should empty every few thousand miles (4-5k kilometers). The can, if a proper system with cleanside separator, will remove what you do NOT want being ingested and should never cause a vacuum leak or effect the rate of flow through the system.

Mr Jos · 07-28-2015, 03:09 PM

Elite Engineering catchcan, bottom hose to the fixed orifice PCV barb, top one to the intake manifold. Usually emptied every 3~5K km but it catched alot last time (filled till top) within 7K km I added 2Liters (2quarts) to keep it in the middle. Now I'm running without catchcan to get it solved first.

It seems to suck up loads of oil. I already took of intake manifold, no puddles of oil and intake valves are clean (because I run on LPG, wich is injected in the ports) so actually I don't even need the catchcan because the LPG cleans the valves. No oil leaks under car (parked on concrete at night). Engine oil gets changed every 8-9K km.

Could a full catchcan have damaged anything? PCVsystem doesn't seem clogged as I can blow air in the crankcase, but sucking does go easyer though.

AITI · 07-28-2015, 05:03 PM

Quote:

Originally Posted by Mr Jos

Elite Engineering catchcan, bottom hose to the fixed orifice PCV barb, top one to the intake manifold. Usually emptied every 3~5K km but it catched alot last time (filled till top) within 7K km I added 2Liters (2quarts) to keep it in the middle. Now I'm running without catchcan to get it solved first.

It seems to suck up loads of oil. I already took of intake manifold, no puddles of oil and intake valves are clean (because I run on LPG, wich is injected in the ports) so actually I don't even need the catchcan because the LPG cleans the valves. No oil leaks under car (parked on concrete at night). Engine oil gets changed every 8-9K km.

Could a full catchcan have damaged anything? PCVsystem doesn't seem clogged as I can blow air in the crankcase, but sucking does go easyer though.

What are you doing on the driverside (clean side?) To be complete and properly functioning you will want the Elite billet cleanside. I have the E2 with one side outlet to the IM vacuum, the other to a barb I inserted just in front of the throttle body, and then the cleanside replaced the oil fill cap and the hose from it runs to the main intake tube where the original stock tube connected from the rear of the drivers valve cover. That way at all times the can is pulling vacuum and evacuating, and the cleanside will also trap any oil that may try to enter there. I would put it back on after you get their cleanside unit. If yours is a 2014 or newer, it will have the correctly sized PCV orifice barb on the passenger side valve cover. If not, it will need to be removed and the "drill mod" performed to bring it to the 2014 and up size.

I have a 2015 so it has the correct PCV barb. You cant change out the newer ones as they are seated into the aluminum valve cover to firmly to remove and re-insert. The 2012 and 2013 LFX still use the LLT style plastic valve cover that you can easily remove that from, drill, clean, and reinsert.

Mr Jos · 07-29-2015, 12:03 PM

Cleanside; Only the factory lines from intake tube to rear driverside valve manifold. With a big plastic tube it seems in the middle. Is this some kind of filter?

I checked the hole on my orifice and it has a big hole on top, and I can fit a 1mm wire (1/32") easy in through bottem hole, after putting it about 2" in I hit something and can't go further. So I think it's a end of year 2013 with modified orifice already.

Cold starts it really smokes out of exhaust, and dripping gas out and can't hold idle speed and dies multiple times, pushing throthle pedal doesn't do anything when cold. When warm no more smoke and reaction to throthle is back but with detonations in exhaust. After a while it goes in reduced engine power, and then it runs fine, just slow acceleration, but good idle and revving.

Earliest I can bring the car to a shop is August 10 due to summer holiday time and all shops run on less employee, so I'm hoping to find the problem myselve.

MrChrisLS3 · 07-29-2015, 02:23 PM

I don't think PCV is the issue here. Not sure what is, but smoke and fuel out of the exhaust on cold start is definitely not good, and not something PCV would cause. Leaking injector maybe? MAF sensor? O2 sensor?

Mr Jos · 08-27-2015, 03:00 PM

Feedback on the issue;

Problem(s) have been solved.
- High pressure fuel pump was completely stuck and has been changed.
- Some restrictor in PCV system got loose making the hole to big causing it to pull to much air, restriction inserted fixed issue.

Driving like new again

07-28-2015, 03:09 PM	#16
Mr Jos Drives: '13 2LT RS Join Date: Dec 2013 Location: Belgium Posts: 49 View My Garage	Elite Engineering catchcan, bottom hose to the fixed orifice PCV barb, top one to the intake manifold. Usually emptied every 3~5K km but it catched alot last time (filled till top) within 7K km I added 2Liters (2quarts) to keep it in the middle. Now I'm running without catchcan to get it solved first. It seems to suck up loads of oil. I already took of intake manifold, no puddles of oil and intake valves are clean (because I run on LPG, wich is injected in the ports) so actually I don't even need the catchcan because the LPG cleans the valves. No oil leaks under car (parked on concrete at night). Engine oil gets changed every 8-9K km. Could a full catchcan have damaged anything? PCVsystem doesn't seem clogged as I can blow air in the crankcase, but sucking does go easyer though. __________________ Black '13 2LT RS Thé only one 2013 LPG converted Camaro in the world MRT V2, VTC

07-29-2015, 12:03 PM	#18
Mr Jos Drives: '13 2LT RS Join Date: Dec 2013 Location: Belgium Posts: 49 View My Garage	Cleanside; Only the factory lines from intake tube to rear driverside valve manifold. With a big plastic tube it seems in the middle. Is this some kind of filter? I checked the hole on my orifice and it has a big hole on top, and I can fit a 1mm wire (1/32") easy in through bottem hole, after putting it about 2" in I hit something and can't go further. So I think it's a end of year 2013 with modified orifice already. Cold starts it really smokes out of exhaust, and dripping gas out and can't hold idle speed and dies multiple times, pushing throthle pedal doesn't do anything when cold. When warm no more smoke and reaction to throthle is back but with detonations in exhaust. After a while it goes in reduced engine power, and then it runs fine, just slow acceleration, but good idle and revving. Earliest I can bring the car to a shop is August 10 due to summer holiday time and all shops run on less employee, so I'm hoping to find the problem myselve. __________________ Black '13 2LT RS Thé only one 2013 LPG converted Camaro in the world MRT V2, VTC

08-27-2015, 03:00 PM	#20
Mr Jos Drives: '13 2LT RS Join Date: Dec 2013 Location: Belgium Posts: 49 View My Garage	Feedback on the issue; Problem(s) have been solved. - High pressure fuel pump was completely stuck and has been changed. - Some restrictor in PCV system got loose making the hole to big causing it to pull to much air, restriction inserted fixed issue. Driving like new again __________________ Black '13 2LT RS Thé only one 2013 LPG converted Camaro in the world MRT V2, VTC

07-28-2015, 02:36 PM	#15
AITI Account Suspended Drives: 2015 LFX Auto Join Date: Apr 2015 Location: US of A Posts: 280	No PCV valve. All flow is controlled from the fixed orifice PCV barb on the rear of the passenger side valve cover. PM me with info on the catchcan your running and how you had it connected. You should empty every few thousand miles (4-5k kilometers). The can, if a proper system with cleanside separator, will remove what you do NOT want being ingested and should never cause a vacuum leak or effect the rate of flow through the system.

07-29-2015, 02:23 PM	#19
MrChrisLS3 Drives: 2018 1SS M6 Join Date: Nov 2014 Location: Houston Posts: 2,617	I don't think PCV is the issue here. Not sure what is, but smoke and fuel out of the exhaust on cold start is definitely not good, and not something PCV would cause. Leaking injector maybe? MAF sensor? O2 sensor?