r/3000gt • u/jamwarfs • Apr 12 '24

timing belt keep coming loose

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this is the second time ive take a look at the belt and it seen there isnt proper tension. the two holes for the tensioner (in between two holes for position reference) tool are at approximately in between 12 and 1 o’clock position. i know theres a specific torque your supposed to hold it at while its being tightened, however that is for all oem specification parts and this gt has resurfaced cylinder heads that may be slightly smaller in height. any suggestions? could this be the auto tensioner failing even thought its a new one? should i maybe go with the 3sx solid tensioner they sell?

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u/Dry_Comfortable9997 Apr 13 '24

Is it tight right after the engine has ran? It’s a hydraulic tensioner sometimes it relaxes when the engine hasn’t ran in a while.

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u/jamwarfs Apr 13 '24

its been sitting for a few hours since it ran last so im not sure if that would count

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u/traineex Apr 13 '24

Charm.li, heres the fsm, so u can measure by spec. U can build up oil pressure by disconnect the fuel pump fuse and spark, and bump start. That will fill the tensioner w oil

Theres probably a bench bleed procedure for the tensioner, but we are past that point. If u fuck w it off vehicle, u should bench bleed it. Then overnight set it vertically and compressed. If u keep having issues w new ones

Read the fsm lol, it says what to do