 Oil dye, To locate leaks |
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| mtndawg |
 Aug 15 2019, 04:54 PM
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Member  Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None 
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I have a slow leak on the passenger side on the bottom of my engine and can’t find where it’s originating. Has anyone used an oil dye with success?
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| IronHillRestorations |
Aug 16 2019, 06:58 AM
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#2
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I. I. R. C. Group: Members Posts: 6,724 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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Motor oil will fluoresce under a black light as milky white, the dye helps though.
I'd clean your engine as good as you can, run it, and then shine the black light on it. I have the most success with this at night as I've just got the little "Smart Light", which is a small fluorescent black light Part of the problem with air cooled engines is the oil migrates with the airflow from the fan. Clay's advice is good though, there's really just a handful of places a 914-4 engine can leak |
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| mtndawg |
Aug 16 2019, 02:00 PM
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#3
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Member Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None
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QUOTE(IronHillRestorations @ Aug 16 2019, 05:58 AM)  Motor oil will fluoresce under a black light as milky white, the dye helps though. I'd clean your engine as good as you can, run it, and then shine the black light on it. I have the most success with this at night as I've just got the little "Smart Light", which is a small fluorescent black light Part of the problem with air cooled engines is the oil migrates with the airflow from the fan. Clay's advice is good though, there's really just a handful of places a 914-4 engine can leak I had not thought about using a black light shining on the oil without the dye. I have a newly rebuilt motor with all new seals and everything is very clean. I think I'm getting a leak from one of the push rod tubes. I'll try the black light. |
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Posts in this topic
mtndawg Oil dye Aug 15 2019, 04:54 PM
mark04usa Most of us just look at the usual suspects: valve ... Aug 15 2019, 08:15 PM ClayPerrine I used it a lot when I was still fixing cars for a... Aug 16 2019, 06:16 AM
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