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I'm wondering if any has any ideas on this. Map code, rich code, (trim seems to hang around -16) I noticed the air box was full of what looked and smelled like exhaust. I took off the Pcv hose and it appears that the exhaust it coming from inside the engine. It actually runs decent. Under hard load it seems like it could have a little more power. But nothing I would really complain about. The vacuum at idle is steady 20inhg. While brake torquing at 2k rpm it drops to about 10in. (I'm not sure if this is good or bad) I made a small video of the exhaust leak. Any help would be great. It's a very good customer. And I'd love to give him an answer. Thanks.
What voltages do you read while backprobing on the Lt Green wire of the MAP sensor? Take a reading during KOEO, and idling.
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Yes 105 code. Sorry. Scan data shows map voltage 4.8ish koeo and 1.2 at idle. Scope read the same on the green wire. The vacuum readings I gave were with a guage attached to the brake booster port on the intake. The video doesn't do the exhaust in the crankcase justice. I think the lighting is messing with it. When I took the air box off it was full of exhaust. The TB was very dirty. So I took it off to clean it. When i removed it exhaust rolled out from the intake. I put the TB and air box back on. (Still rich) re did the vacuum test to check for a plugged exhaust and the vacuum holds steady at various rpms, and loaded or unloaded. up to 2500. It drops to 10 ish depending on rpm,but it holds steady. (Not jumping or falling slow) At idle there is a rhythmic puff of exhaust coming out of the oil cap, and the pcv outlet that is in the video.
Yes 105 code. Sorry. Scan data shows map voltage 4.8ish koeo and 1.2 at idle. Scope read the same on the green wire. The vacuum readings I gave were with a guage attached to the brake booster port on the intake. The video doesn't do the exhaust in the crankcase justice. I think the lighting is messing with it. When I took the air box off it was full of exhaust. The TB was very dirty. So I took it off to clean it. When i removed it exhaust rolled out from the intake. I put the TB and air box back on. (Still rich) re did the vacuum test to check for a plugged exhaust and the vacuum holds steady at various rpms, and loaded or unloaded. up to 2500. It drops to 10 ish depending on rpm,but it holds steady. (Not jumping or falling slow) At idle there is a rhythmic puff of exhaust coming out of the oil cap, and the pcv outlet that is in the video.
