MPS testing and where get rebuilt, Slight loss of vacuum after 5 min ? bad MPS |
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MPS testing and where get rebuilt, Slight loss of vacuum after 5 min ? bad MPS |
jsf322 |
Aug 18 2006, 02:18 PM
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#1
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Member Group: Members Posts: 83 Joined: 1-December 05 From: Baldwin, New York Member No.: 5,220 |
I just checked my MPS because my car is running rich, burns a lot of fuel, and idles very poorly especially when warm. The CHT was bad and I replaced that. IT improved the stalling I had before replacing it, but the car is still rich and idles very unpredictably. I put 15mm Hg on the MPS and it lost about 1/2 mm in the first minute and 4-5mm within 5 minutes. Would that be considered a bad MPS. If so does anyone have experinece with rebuilt units from AA or Preformance Products. AA is about $40 cheaper. Thanks for any input.
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bondo |
Aug 18 2006, 02:46 PM
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#2
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
I wouldn't consider that unacceptable, but that doesn't mean it's good. There are ways for it to break that will still allow it to hold a vacuum. The only way to know for sure is to take it apart, or test it with fancy equipment. A quick and easy test is to borrow a known good MPS and see if it fixes your problem.
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