<![CDATA[iFixit - Answers With Device "Mityvac MV8000"]]> https://www.ifixit.com/Answers/Device/Mityvac_MV8000?rss=yes en-US Thu, 07 May 2026 14:34:57 -0700 <![CDATA[Mityvac MV8000: won't build vacuum when handle released]]> Hi I just recently bought this pump and for whatever reason it is able to pull vacuum if i hold the handle down but when i release the handle the vacuum restores to no-vacuum - not sure what the issue is - i have disassembled and cleaned the entire unit and no signs of brake fluid or debris. Seals all look new as the unit is brand new with the exception of 1 time use which at that time it worked great - but no brake fluid has been in the gun

⟐ Answered June 24, 2023 at 19:18 MST

]]> https://www.ifixit.com/Answers/View/798457/won't+build+vacuum+when+handle+released https://www.ifixit.com/Answers/View/798457 Sat, 24 Jun 2023 19:18:03 -0700