around 6-7 hours according to AllData
Atlanta GA...I just received an estimate of 4 labor hours to remove the intake manifold of a 1996 E300D
The sensor is located under the intake manifold. It takes about 2 and half hours to replace the intake manifold, book time. Knock sensor is about $35 + $60-$90/hr labor. So you are talking about $300.
5 hours labor Book time. A good experenced mechanic can do it in about 3 hours.
most time it is caused by intake gasket failure
Leak is from the intake manifold at the back by the firewall. drips when not running due to presure at the top, vaporizes on the exhaust pipe. Need a new manifold gasket, $500 labor $50 parts. 4-5 hrs time
you need to take the intake maniflod off, and the 2 screws on the back of the manifold. total time 2.5 hours, replace intake gasket or reseal it...
Most of the time - yes
that can be any number of things. 1 check or replace the distributor. 2 check your head gasket. 3 if its back firing it doesnt always mean u jumped timing, your exhaust manifold gasket could be bad and you might be getting exhaust fumes in your intake manifold. note- intake manifold and exhaust manifold share 1 gasket
The intake manifold is leaking from the water jacket. That is a common problem on V8 and V6 engines over a period of time. That is the only thing that can leak water back there. There are 4 water jackets in the intake, 1 on each corner of the intake front and back. Hope I helped. NEED TO REPLACE INTAKE GASKET
If the usual problems don't reveal the prolem have your mechanic check the intake manifold. These engines have a tendency to loosen the bolts on the intake manifold and the leak will damge the gasket. In time it will get worse.
Just an update, we didn't want to take the time in removing the fuel system so we held it to the side and unscrewed the 8 bolts holding the intake in, after that it was pretty simple to detach the intake manifold and "finagle" it out. However, i did run into a problem with the chosen header going in to replace the old exhaust manifold and had to grind the outsides of the intake manifold around the bolt holes in order to make the exhaust manifold fit correctly.