602 prechamber leak - Page 2 - PeachParts Mercedes-Benz Forum

Diesel911 · #16 12-10-2013, 01:24 AM

Quote:

Originally Posted by sixto

Laser Tools | 5472 | Spline Socket Pre Chamber Mercedes-Benz

Sixto
87 300D

Well it worked and nothing wrong with a tight fit as long as it comes out.

I bouth several Laser Tool Delivery Valve Holeder Sockets and they would not fit over the Delivery Valve Holder deep enough and just barly touched the Splines.

I Emailed them with the dimensions I thought were wrong compared to a Hazet Socket and ask they why they had not simply copied the Hazet Socket.

It took a couple of Months but the Fixed changed the Sockets and sent Me replacements and a few extras.
Once Laser fixed them they worked as well as the Hazet Sockets. Of course the Torque is very low on the Delivery Valve Holders but the Steel on the Sockets seemed good.

See the pic

2.5Turbo · #17 12-10-2013, 02:49 AM

Quote:

Originally Posted by sixto

300D 2.5 would have angled injectors. Looks to be at least 204K miles between the sig line and post #4.

Sixto
87 300D

Sig line mileage is correct (155k), photo was taken at about 95k. I cleaned the leak area spotless when I reinstalled the injector and it's definitely coming out between the ring and the head via the keyway in the head. No drips from above (the xover pipe is over #3). It doesn't smoke more than normal and doesn't use any oil or coolant. I'm at about 7500 miles on this change of T6 and the level hasn't budged. Haven't blackstoned it recently but the last one was very clean.

I might clean it up and see if the "oil" still comes out after a while. I have a suspicion it might just be fuel that made its way down there when I undid the injector and is now being pushed out by compression carrying a bunch of black gunk with it making it look like crankcase oil.

Unless I have a severely cracked head I don't know how crankcase oil would make its way past the prechamber. There would have to be tons of oil in the cylinder and I'd think you'd notice rough running and/or smoke as well.

sixto · #18 12-10-2013, 02:45 PM

Quote:

Originally Posted by Diesel911

Was it a tight Fit like the aftermarket one mentioned?

I only have and have ever used the aftermarket Laser socket.

Sixto
87 300D

sixto · #19 12-10-2013, 02:50 PM

Quote:

Originally Posted by 2.5Turbo

I might clean it up and see if the "oil" still comes out after a while. I have a suspicion it might just be fuel that made its way down there when I undid the injector and is now being pushed out by compression carrying a bunch of black gunk with it making it look like crankcase oil.

If and when you do, put a smear of RTV along the edge of the manifold gasket where the picture shows goop.

Help me orient the picture - does the spread of goop follow a gravity gradient?

Sixto
87 300D

2.5Turbo · #20 12-10-2013, 03:52 PM

Quote:

Originally Posted by sixto

If and when you do, put a smear of RTV along the edge of the manifold gasket where the picture shows goop.

Help me orient the picture - does the spread of goop follow a gravity gradient?

Sixto
87 300D

Yes, the head surface slopes downward to the right of the injector well with the black stuff pooling against the edge of the intake manifold gasket. You can barely make out the edge of the semicircular prechamber alignment keyway at the edge of the well where it all seems to be coming from.