Testing a four MPS, one holds vacuum but it's erratic |
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Testing a four MPS, one holds vacuum but it's erratic |
Mark Henry |
Feb 18 2021, 01:56 PM
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#1
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Hi All!
Ethan just tested four MPS on a '74 2.0 we have here and it seems one holds pressure but it runs erratic. We tested the three other MPS and they tested good. I know that even if an MPS tests good, old MPS's the diaphragm's often fail once pressed back into service. Would the Tangerine MPS diaphragm kit help this, or is there something else likely going on? |
914_teener |
Feb 20 2021, 10:44 PM
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#2
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914 Guru Group: Members Posts: 5,245 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
I had one that was partially cracked.
Would operate and run fine...and then not. |
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