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Ron914 |
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#1
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Member ![]() ![]() Group: Members Posts: 356 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California ![]() ![]() |
I needed to rebuild my MPS but Chris Foley is out of the kits due to no longer having a supplier of the BE-CU diaphragms . I was lucky enough to have a member here offer to sell me his spare parts kit from Chris (Thanks Tom). His kit did not have the instructions with it so I am wondering if anyone has a copy of those instructions?
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ChrisFoley |
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#2
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I am Tangerine Racing ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,990 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None ![]() ![]() |
Its a good idea to test the mityvac on a dead ended hose to make certain it doesn't contribute to leakdown rate. I installed a shutoff valve on my setup, between the vacuum pump and the tee.
When I test a MPS unit I pump it down to about 18", close the valve, and expect 5+ minutes with only 1-2" of loss. It's not uncommon for a unit to pass a test at 10-12" of vacuum, but fail during operation in the car. It usually means there is a cracked diaphragm. |
Ron914 |
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#3
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Member ![]() ![]() Group: Members Posts: 356 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California ![]() ![]() |
Its a good idea to test the mityvac on a dead ended hose to make certain it doesn't contribute to leakdown rate. I installed a shutoff valve on my setup, between the vacuum pump and the tee. When I test a MPS unit I pump it down to about 18", close the valve, and expect 5+ minutes with only 1-2" of loss. It's not uncommon for a unit to pass a test at 10-12" of vacuum, but fail during operation in the car. It usually means there is a cracked diaphragm. Thanks Chris, I agree my MPS still has a leaky diaphragm that needs. replacement . I am still going to replace the diaphragm in my MPS , I get my TB back today from rebuild and was just going to see if I could pass a smog test here in California with my current MPS so I can start driving my car in the mean time . I still have some time to complete the installation of the three gauges needed to tune my MPS afterwards . |
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