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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 03-20-2017, 07:12 PM   #1
240_newb
 
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Ka-t No Power

Ok, so I've got most of my issues solved for now, and my ka idles great, but I've got a severe lack of power. Compression is 163 on all four and I build boost well, but I've got even less power than when I was n/a. Just revving the engine there is a big hesitation after applying throttle. Plugs are dark sooty black, when i get into boost it gets plenty loud but doesnt go anywhere fast, no the clutch isnt slipping. Seems to still be running very rich. I have to have the distributor all the way clockwise to get to 20 degrees, which makes me think the lower chain may be off a tooth, but I'm not sure because it seems like it wouldn't start so easily or have good compression numbers. Running a t25 and enthalpy tune. Draw through z32 maf, and 370cc injectors, walbro 255 pump. Does this sound like a timing chain issue?
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Old 03-20-2017, 07:20 PM   #2
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Start with the basics. Put your timing back to stock.

Whats your plug gap?
Also, when is the last time you changed the fuel filter?

Next look for vacuum/boost leaks
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Old 03-20-2017, 07:44 PM   #3
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Boost leak?


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Old 03-23-2017, 01:42 PM   #4
240msh
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sounds like its all timing related
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