M119 distributor caps collecting moisture
 

I have a 94 E420 that I bought with spark issues. I replaced a cracked cap and cleaned the other in my driveway in January. It's been sitting since and I've been trying to start it weekly to keep it in running shape until they stop salting the roads. However I neglected to do that for a little over 2 weeks and now the caps are full of moisture again and it had a hot start issue.

What's the permanent solution to this? I replaced one with a Bosch part I purchased new and it had this issue still. I'm rather disappointed in that.

Replace both caps and rotors and the suppressor disk behind the rotor. The suppressor disk plays an important role in keeping the caps dry.

Good luck

Jayare

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I had to Google that hah. Are you talking about the large plastic cover? That's in good shape with no cracks. Is there something else that can be wrong with it like a seal I should inspect?

Yes, the disk behind the rotors. Replace them..

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Ok thank you. Do you know the part number?

I found 014 997 58 48 as the seal and I have ordered that.