2016年8月22日 · 4. Next, we find ourselves in the intake manifold, which is pictured below. Inside this port, there is a check valve (which GM refers to as a non-return valve), pictured in the next two images. Note, this is not a ball (as it has been previously referred to). It is a non-return/ check valve, that more closely resembles a specifically shaped nipple.

2017年1月20日 · You need to be able to do this while sustaining pressures of 15-30psi (stock/tuned vehicles). The OEM intake manifold check valve serves this function decently well, while it works, but the check valve stops sealing well after a few thousand miles, producing an audible boost leak, and eventually disappears altogether.

2017年2月23日 · It's not a matter of if, but when, it will fail. There are three primary components to this system that frequently fail: the PCV regulator diaphragm (some people call it a check valve) on the valve cover, the check valve in the intake manifold, and the corrugated hose going from the intake manifold to the turbo.

2018年9月11日 · Non return valve 6) If the intake manifold Non Return Valve is missing, then replace the intake manifold assembly, Clean oil from all induction system components and retest for oil consumption, leaks or DTCs resetting. 7) If the intake manifold Non Return Valve is seated properly, then perform the following. Record the crankcase pressure.

2018年1月20日 · Manifold "pot" is a different shape. whether any of these things make any difference, I have no idea. BUT what is different regarding PCV Check valve is that it is displaced further back into the manifold vs it in line with the Anti-return check valve tube opening. Same design however I have no idea if this will remedy the lousy designed system.

2022年8月9日 · The new external check valve is easily accessible for cleaning, and can be replaced for $10-$20; Stops oil consumption caused by missing check valve. Oil consumption will cause carbon build up on the piston crown and ring lands, which can cause detonation and piston damage. Much longer lasting than the OEM check valve due to more robust design.

2018年9月29日 · Description: non return valve missing, pcv port on camshaft cover leaking, Tech at dealership said it was running lean. work done: stop OLH for camshaft cover and pcv pipe, replaced intake mansfield ASM for non return valve missing, OLH to replace camshaft cover and pcv hose for leaking vacuum. Cleared codes, test drove.

2015年10月5日 · There's a diaphragm on the valve cover with a small hole in the front. There will be an audible whistle coming from there. This indicates the valve cover has failed. It's also worth pulling the PCV hose off the intake and checking for the non return valve (small orange triangular piece) being present in the intake, moat of the time it's gone.

2019年11月17日 · What I found: valve cover gasket was extremely hard and brittle and came apart as I removed it. Intake manifold ports were very gunked up. Orange check valve was still in place but probably not operating as it should. Turbo oil feed line was free and clear but slid out of the block easily, would have developed a leak soon for sure.

2019年12月12日 · GM 1.4L Turbo Intake Manifold PCV Valve Fix Kits 3. How-To: Remove 2011-2016 Cruze 1.4L Intake Manifold 4. How-To: Replace the Valve/Camshaft Cover (1.4L Turbo) 5. How-To: Replace CPASV (Camshaft Position Actuator Solenoid Valve) Seals 6. How-To: 1.4L Gen 1 front crankshaft seal replacement 7. How-To: GM 1.4L LUV/LUJ PCV Fix Kit V1 Install 8.