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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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04-13-2021, 12:09 PM | #1 |
Leaky Injector
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SR20DET looses boost past 4K
SR20DET drives fine but once past 4K it then looses power I can hit boost at lower RPM, 3500k, I do feel it pulling pass 4K, NOW when attempting again it doesn?t boost and starts to lag. Anyone experienced this ????
SpecR T28 OEM turbo
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04-13-2021, 01:53 PM | #2 |
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What did you change? Did you replace or modify something, THEN this problem started?
What have you tested? Compression? Fuel pressure? Power balance test? Vacuum / boost leaks? |
04-13-2021, 02:35 PM | #3 |
Leaky Injector
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I?ve checked spark plugs, checked side Mount intercooler, hoses are good. I still need to do a compression test.
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04-20-2021, 06:01 PM | #4 |
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The easy things to do are:
Check all your vacuum/boost lines. You could have a small crack or tear in one that opens up when it gets hotter. Also, check your actuator- see if it's overly loose when moving it by hand- I've seen them get flaky with heat too. Do you hear any hissing when trying to build boost but not boosting? Sure sign of a boost leak. Good luck! EDIT: Just realized this is a week old. Would really be nice to hear back on what the fix was if found. Mike
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