Injector Pop Testing Question (Video)
Hey all,
I finally got around to building my injector pop tester. I may be using it wrong, so any input would be appreciated! The injector seems to begin "popping" around 400 PSI or so, and loses its pressure. http://youtu.be/hq5H-C-g8Bs Thanks! |
For one thing, a liquid-filled gauge is not the best option for pressure testing. Its response time is too slow.
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Anyone else have experience with pop testing? |
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From what I can see it appears to be working as expected. Your popping is more pronounced than what I get, but I think that's just higher flow with yours. Are you popping injectors with new nozzles or just checking your existing injectors as they came out of the car? What are your readings across all injectors? |
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I thought you might have meant it was 400 psi low until i watched the video and saw it chatter around 400.
How was the car running? and did you check your 0 to 60 before you pulled them? |
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I suspect that you won't find a professional injector tester that uses a damped pressure gauge. Quote:
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Regarding pop testers, if I felt I needed accuracy to +/- 1 psi on a pop tester, I'd buy a $5000 digital unit with integral printer, 16" screen and a .5 micron filter assembly and automatic popping and digital recording of each pop in super slo-mo, rather than building one. I can live with a lot less accuracy and bells and whistles and only have $21.47 invested...and you know what? The car runs perfectly, and has for the last 30k miles since I last popped my injectors. I kind of like my HF tools, too... and my swap meet tools and my Craigs List equipment. And I kind of like making my own tools and solving problems without investing a fortune. If you want a dry gauge, go for it... |
your popping appears to be around 135 bar... I don't know where you are seeing 400psi pop... it's over 1500psi... hard to tell exactly, as the needle is very slow to respond, but it's certainly not 400 psi...
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This little unit has a liquid filled gauge:
Caterpillar Cat 1U6661 Pop Injector Tester w Cart Used | eBay |
also, the liquid level in the gauge makes it hard to read the pop pressure... but it's sitting stable around 1000 psi... it only pops as you pump it over 1500...
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For future reference, once the eBay ad expires... http://www.peachparts.com/shopforum/...1&d=1395865033 http://www.peachparts.com/shopforum/...1&d=1395865107 |
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Why would you choose a damped gauge for use in a dynamic situation like injector testing? |
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...that is all |
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