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Had a late 80 series with the 1HD-FT in at work a couple of months ago with the same leak, also had cold running issues. Pulled pump off & sent away for overhaul, main housing was worn, fitted a new pump after the boss haggled with Toyota & waited a few weeks for it to come from Japan. Customer was rapt, come back asking if we fitted an additional turbo.
The oring can leak where the unit bolts to the housing, it can also leak through the shaft of the main device. Its call an automatic cold start device. Can be tricky to do in the car but not impossible.
Andy
www.diesel-tec.com.au Ph 03 9739 5031
Ball bearing turbo upgrades for factory turbo vehicles. Got a diesel question just ask.
Home of the twin turbo shorty and many 150rwkw+ patrols.
i had the same leak the housing does wear and have seen a few altho i found it easy enough to replace the part myself i did end up sending the pump to a pump place the get all upgraded parts put in it and cleaned up while off because i wanted to turbo the 1hz shortly after
The leak is actually coming out at the furthest point in the spring so could be the shaft. Let it warm up tonight and reduced from one drip per second to one drip per ten seconds. I might take it into the mechanic to see what happens
