PeachParts Mercedes-Benz Forum - View Single Post - The "Diseasel"

Diseasel300 · #69 06-09-2017, 10:02 PM

Incremental Diseasel updates:

Fuel consumption is still down, the car never smokes unless it's wide open at high RPM's. Oil consumption has dropped to the point I'm no longer worried about it. ~500 miles on this oil change and the level has barely dropped below the "MAX" line on the dipstick. The only change has been adjusting the ALDA. I strongly suspect I was dealing with severe fuel dilution issues.

Earlier this week I changed out the expansion valve in the A/C system. The original one kept hanging open. The result was that it would sometimes work and sometimes wouldn't unless you got the RPM up. Lots of gurgling and hissing under the dash as it hunted back and forth before finally sticking open. The new expansion valve has put an end to that behavior and I'm getting 42˚ air on a 96˚ day. I can live with that!

Helping the A/C system out is a new genuine MB monovalve cartridge. The original one had intact seals, but they were very hard compared to the new one. The movement of the plunger is also very rough compared to the new one. Not to mention that now the A/C blows like an icebox without having to fight the heater!

Just this evening I did another polishing job on a nailing delivery valve in Cylinder #5. Was successful in stopping the nailing. So far that's 3 for 3. This fall (when it cools off) I intend to do some IP work and I'll lap all 6 DV's at that time. The IP is leaking oil and needs new seals and I still need to tweak the RPM limit to let the engine rev to the proper limit.

Other than that, it's been business as usual. The SDL has been the "daily driver" for the last couple of weeks and been doing a fine job. Working A/C and a working radio sure make a difference in the creature comfort department.