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Re: 93 5.2 Magnum stumbles off idle. I'm stumped [Re: demon] #2985785 11/16/21 02:56 PM 11/16/21 02:56 PM
Joined: Jan 2006 Posts: 8,162 USA 3 360view Moparts resident spammer
360view Moparts resident spammer 3 Joined: Jan 2006 Posts: 8,162 USA	Another thing to check on the EGR is just below the throttle blades. The EGR outlet holes are arranged in a “T” just below the throttle butterflys. If one hole of the two holes on the T plugs up with carbon crud, it will send all of the exhaust gas to one side of the V8 which will cause those 4 cylinders to stall out.

Re: 93 5.2 Magnum stumbles off idle. I'm stumped [Re: demon] #2985832 11/16/21 04:37 PM 11/16/21 04:37 PM
Joined: Mar 2010 Posts: 1,061 Atlanta, GA M mgoblue9798 super stock
mgoblue9798 super stock M Joined: Mar 2010 Posts: 1,061 Atlanta, GA	Originally Posted by demon I did not remove the distributor. One thing though, the engine seems to use more oil than it used to, and it will puff blue out the exhaust when restarted after it stumbles and stalls. Ok based upon that you almost certainly have a bad intake pan gasket on the kegger. Look down the throttle body inside the intake. If you can see oil this is your problem. It will cause the motor to use oil and have a vacuum leak. Exactly what you are describing. There are aluminum plates out there available to replace the stamped sheet metal piece on the bottom of the intake to make sure it does not leak again. Last edited by mgoblue9798; 11/16/21 04:40 PM.

Re: 93 5.2 Magnum stumbles off idle. I'm stumped [Re: mgoblue9798] #2985895 11/16/21 08:46 PM 11/16/21 08:46 PM
Joined: Feb 2006 Posts: 1,179 Canada D demon OP super stock
demon OP super stock D Joined: Feb 2006 Posts: 1,179 Canada	Originally Posted by mgoblue9798 Originally Posted by demon I did not remove the distributor. One thing though, the engine seems to use more oil than it used to, and it will puff blue out the exhaust when restarted after it stumbles and stalls. Ok based upon that you almost certainly have a bad intake pan gasket on the kegger. Look down the throttle body inside the intake. If you can see oil this is your problem. It will cause the motor to use oil and have a vacuum leak. Exactly what you are describing. There are aluminum plates out there available to replace the stamped sheet metal piece on the bottom of the intake to make sure it does not leak again. Nope, I did the intake pan gasket a year ago. Ran fine until recently

Re: 93 5.2 Magnum stumbles off idle. I'm stumped [Re: demon] #2986007 11/17/21 09:50 AM 11/17/21 09:50 AM
Joined: Jan 2006 Posts: 8,162 USA 3 360view Moparts resident spammer
360view Moparts resident spammer 3 Joined: Jan 2006 Posts: 8,162 USA	Originally Posted by demon I did not remove the distributor. One thing though, the engine seems to use more oil than it used to, and it will puff blue out the exhaust when restarted after it stumbles and stalls. The PCV system design on the early Magnum’s is not the best. Blue oil smoke might be an indicator that oil is being drawn in. Even a tip top condition PCV system on a Magnum V8 allows more oil through than I like to see. The valve cover baffles leave a lot to be desired. If you install an oil separator in the line it will catch a lot of oil.

Re: 93 5.2 Magnum stumbles off idle. I'm stumped [Re: demon] #2986040 11/17/21 11:29 AM 11/17/21 11:29 AM
Joined: Jan 2004 Posts: 8,237 fredericksburg,va C cudaman1969 master
cudaman1969 master C Joined: Jan 2004 Posts: 8,237 fredericksburg,va	Originally Posted by demon Originally Posted by mgoblue9798 Originally Posted by demon I did not remove the distributor. One thing though, the engine seems to use more oil than it used to, and it will puff blue out the exhaust when restarted after it stumbles and stalls. Ok based upon that you almost certainly have a bad intake pan gasket on the kegger. Look down the throttle body inside the intake. If you can see oil this is your problem. It will cause the motor to use oil and have a vacuum leak. Exactly what you are describing. There are aluminum plates out there available to replace the stamped sheet metal piece on the bottom of the intake to make sure it does not leak again. Nope, I did the intake pan gasket a year ago. Ran fine until recently I’d check it again, they do fail. The steel pan and aluminum intake move differently from hot to cold.

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