Fenril Posted September 25, 2013 Share Posted September 25, 2013 Hi Hybridzers! I write you because I have an issue with my 77' 280z! After changing my exhaust manifold, I've had to remove my EGR Valve because the new manifold doesn't have the hole to connect the EGR... So, after deleted the EGR, my car doesn't keep the idle like if the air/fuel ratio was modified... (sound like too much air...) Could someone help me to explain me a way to proceed? Some pics: Thanks for your help! (Ps: sorry for my bad English, I try my best...) Quote Link to comment Share on other sites More sharing options...
NewZed Posted September 25, 2013 Share Posted September 25, 2013 Maybe the problem is not the EGR sytem at all. Since you've had the intake manifold off, several other important hoses must have been removed. One that's not obvious but people forget sometimes, is the PCV hose connection underneath the manifold. I would check all other possible intake leak sources, including the injector seals and manifold gaskets. And since the engine runs, you can test for leaks using a flammable fluid like carburetor cleaner or gas like propane at the possible leak areas. Listen for a change in idle speed. Don't start a fire. Quote Link to comment Share on other sites More sharing options...
Fenril Posted September 25, 2013 Author Share Posted September 25, 2013 Maybe the problem is not the EGR sytem at all. Since you've had the intake manifold off, several other important hoses must have been removed. One that's not obvious but people forget sometimes, is the PCV hose connection underneath the manifold. I would check all other possible intake leak sources, including the injector seals and manifold gaskets. And since the engine runs, you can test for leaks using a flammable fluid like carburetor cleaner or gas like propane at the possible leak areas. Listen for a change in idle speed. Don't start a fire. Thanks for your tip! I'll check the PCV Hose tomorrow! And I try to find if there is any leaks around the manifolds! Quote Link to comment Share on other sites More sharing options...
Fenril Posted October 10, 2013 Author Share Posted October 10, 2013 Sorry for the late reply... The issue is resolved! It was the PCV Hose that was cracked! Thanks all! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.