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Found 1 result

  1. Hello, as you can see from the title I have a CA18DET that has power loss. I was browsing this forum but I couldn't find anything similar to my problem. Anyway, I'm gonna try to explain it as clearly as I can. Also, I want to say that I'm not a mechanic, my knowledge with cars is really little. And sorry for my bad english, it isn't my first language. So, everything started when I was cleaning my engine (oil) from slug. I removed valve caps, CAS, camshafts, timing belt, hydraulic compensators (I've rebuild them). After putting everything together I also changed oil, oil filter, fuel filter, spark plugs, cleaned my injectors. When we started the car it worked fine, but after putting gas pedal to the floor the car would start to "cough"/shoot from exhaust and wouldn't go past 3k RPMs. Anyway, I didn't knew what to do so I gave it to a guy that works with 200sx for many years. He re-put my timing belt and set the timing. It helped for a few days. But after a few days I got a straight 3" exhaust with turbo elbow. The guys that installed it said that it's from SR20DET and that turbo elbow is now screwed to my turbo with 4 out of 5 screws. Anyway when I got my exhaust installed the problem started again. Car started caughing and wouldn't go past 3k RPMs when floored. I took my car to the same guy and he found out that my fuel pump is dead. He changed it to other one (used) and it was ok for a while. So now I have a different problem. When I am pushing gas soft the car runs fine, but if I floor it, I hear the turbo spool (~3k RPM), I can feel the acceleration till about 4k RPMs, then I feel a slight pause (it stops for like 1sec @ 4k RPMs) and then it goes further but reaaaaally slowly. And I feel like the boost turns on-off-on-off. It's really strange and hard to explain. Sometimes I feel like I don't have any boost. What should I check? Should I look at turbo's actuator? As I was googling I've read that it can be: 1) Boost leak 2) Spark plugs 3) Vacuum leak 4) IC piping leak 5) Exhaust leak 6) O2/lambda sensor 7) Coilpacks I tried to disconnect my O2 sensor, but nothing changed. I took NGK spark plugs (I will be able to tell the exact model tomorrow) from my friends dead SR20DET motor, gonna try to put them in, also check the coilpacks. Maybe you guys have any schemes or pictures that could show me where to look for boost/vaccum/ic piping leaks? I would be really grateful for that. Oh and by the way, my S13 is fully stock except for exhaust and stage 1 ECU chip. Thanks in advance, Kash.
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