Reply to thread

Message: <blockquote data-quote="DPP" data-source="post: 1588558" data-attributes="member: 36296">I have a 1994 3.8 L V6 mustang and have got it running pretty good, but I have an issue with it spiking rpms every now and then on slow downs--driving 40-60 mph and then decelerating in speed zone  hanges. The EGR differential pressure sensor threw a error and so I put the smoke machine in the sensor line to see if there was a leak and I noticed that smoke creeps out around the nut where the EGR tube connects to the exhaust manifold.Correct me if I am wrong, but a leak here wouod allow unmetered oxygen to get into the motor to cause the rpm spikes, correct?My question is how should I go about getting a tight and sealed fit of the EGR tube onto the connection site of the exhaust manifold?The EGR tubes are not sold anymore and I actually had mine repaired, so a new tube is out of the question.Thanks for the feedback.Dustin</blockquote>