I was told I had a bad vacuum leak in the pcv or hoses. What do you have to do to get this fixed as I believe it is in the back of the motor in which you cannot get to???? I was told the intake has to come off to get at it and replace the assembly??? They did a smoke test and it is leaking bad back there but you cannot get to anything. Please advise, Thanks JT
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Sounds like you have a vacuum leak. If you have the V-6 engine, those have a PCV hose under the upper intake plenum that likes to leak. You will need an upper intake gasket set, a new PCV Valve, and some PCV rated hose to fix it. DO NOT use regular vacuum hose on the PCV or you will be doing it again in about 6 months. Standard vacuum hose breaks down rapidly when it is exposed to engine oil.
Check all your other vacuum hoses first. Fix any leaks you find. If you don't find anything else leaking, then the hose under the plenum is your most likely suspect.
There has been an issue of Suzuki engines smoking due to the PCV. valve or the baffles under the valve cover. One method of curing this is to place an oil separator between the vacuum line from the intake and the PCV. This will make for the need to keep an eye on it as it will fill up with oil eventually thus negating the purpose of placing it there in the first place. I think the big fix would be to remove the valve cover and check the oil baffles and filter therein. The problem is that oil builds up at the location of the PCV and is getting sucked into the intake via the vacuum hose to the intake. The quick fix? unplug the PCV and plug up the vacuum hose to the intake. This will get you by until you can get it to a mechanic. Anyway, That what I know. hope it helps
Lack of HO2S-11 Switch, Indicates Lean.Right bank front 02 sensor. When an HO2S sensor indicates lean at the end of a test, the system is trying to correct for an over-lean condition. The code is set when the fuel control system no longer detects switching for a calibrated amount of time.In other words the 02 sensor is indicating lean and the fuel trim has reached the programed limit trying to correct it.
There are many things that could cause this like a bad 02 sensor,a vacuum leak,a leaking or contaminated fuel injector/s,a stuck open PCV valve,leak in hose between MAF sensor and engine causing un-metered or unmeasured air entering the engine,exhaust leak,improperly seated oil dipstick,stuck EGR valve.
Check PCV valve first if it is stuck open if you pull the hose off of the valve cover that hooks to the air tube between MAF and engine you will feel a strong vacuum pull there,normal you would hardly feel it.
This is Common on the SS Models. They will need to Remove the Exhaust to get to this. The SS 350's are Totally Built Different than the Basic 350 Motor. Drop me an E-Mail and I will show you my Cars Just to Prove that I AM a Chevy Guy! MrScary6661313@aol.com