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Old 09-22-2006, 01:29 PM
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Stan944
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Question leak-down test

I'm trying to figure out a problem with the engine. I was wondering if someone had and could loan me the leak-down tester for a few days. I already bought the compression tester, but the leak-down tester is harder to source out fast. I'm in Oshawa/Toronto area.
Big thanks
Old 09-22-2006, 01:55 PM
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Imo000
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Sorry. I don't have a leakdown tester, but what's wrong with the engine? Maybe I can help you figure it out.
Old 09-22-2006, 02:31 PM
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Stan944
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Lost power, and idles very badly around 500 rpm. I disconnected the injectors one by one (cylinder #3 and #4 showed very little change), and I believe the head gasket is blown. I'll do the compression test on Saturday. I want to be reasonably sure before I open it up.
I'll post the results on Saturday in 924/931/944/968/etc. forum, and if you feel like sharing your comments, that would be great. I've already posted a few related topics:
"the engine died..."
"Leak down test"
"Compression test - tutorial needed"
Old 09-24-2006, 07:03 PM
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mark '87 930
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I have a leak down tester if you need one. I'm in Toronto (beaches)
Old 09-24-2006, 08:49 PM
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Stan944
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Originally Posted by mark '87 930
I have a leak down tester if you need one. I'm in Toronto (beaches)
Thanks Mark, I'll contact you if I need it next time. Looks like I almost found the problem: the intake valve on cylinder #1 doesn't close entirely - there is a 1mm gap.
Old 09-25-2006, 05:38 PM
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Imo000
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Originally Posted by Stan944
Thanks Mark, I'll contact you if I need it next time. Looks like I almost found the problem: the intake valve on cylinder #1 doesn't close entirely - there is a 1mm gap.
Wow... 1mm!! That's a lot. Withat that much gap the engine should backfire through the intake. Instead of a bent valve, could it be a bad/collapsed hydraulic lifter. Did you miss shift or over reved the engine just before the problems started or perhaps the timing belt jumped a few teeth?



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