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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#31 | ||
Post Whore!
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Haha Jay, no worries. I'll continue being a post whore and helping people out. Quote:
It shouldn't have just died. That just controls the VTC oil flow. It activates just off idle and switches off at 5200rpms. I just wanted to see if it made a change to the noise.
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*My SR20VET* Does your VTC gear rattle in your S14/15 SR? PM me. |
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#32 | |
Zilvia Junkie
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I was doing a little research and found this thread. Just so you know, my neutral position switch is not hooked up. I don't see how this could relate to the vct?? so the clicking noise is the solenoid actuating/de-actuating really fast?
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#33 |
Join Date: Jul 2015
Location: Mid Mo.
Age: 51
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I'm really fond of my S14 but your car looks pretty sweet.Same color too. You should be able to narrow it down by finding which area its coming from. Sometimes youn can hear better underneath without fan and other noise. Has it always done it or just recently after changing or replacing something.
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#34 | |
Zilvia Junkie
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As for the sound. Has it always done that? To be honest.. I am not sure. I only just recently noticed it. I have not had the car running for the longest time. Only since the end of last summer. Now I am trying to fix all of the bugs. I don't have a consult port, so I find it hard to find engine problems.
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#35 |
Join Date: Jul 2015
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Lifters and rockers tap. Exhaust leak is usually a tick accompanied with soot and exhaust smell. Lower end is gonna be a knock, obviously louder and deeper than the top end noise. Injectors tick and so does your spark if it grounds out just right and the spark is stretched a little. Are there performance symptoms that will help us find waldo.
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#36 | |
Zilvia Junkie
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#37 |
Zilvia Junkie
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UPDATE:
I had misdiagnosed my engine. I thought it was the VTC solenoid. It was actually the TPS. When I did a check on the TPS, I had noticed it was turned all the way clockwise. I checked the FSM and did a resistance test on it. FSM states: throttle released = 0.7 ohms partial = 0.7 - 5 ohms WOT = Approx 5 ohms Mine was totally off. I got my throttle released now set to 0.7 ohms. which is perfect. I can't quite get my WOT to 5 ohms. I get approx 4.1 ohms. I know the FSM says approx. I had an issue with backfiring and this has seemed to stop it. The car runs way better, quieter, smoother, more power. No more clicking/ticking noise. BUT... on the downside, my car seems to die a lot more often when coming to a stop. I have a lightweight flywheel and drive shaft. Found what I have read, there is not enough inertia to stop the engine from stalling when coming down from revs. I am pretty sure I need to now try and increase my base idle. Because now after messing with my TPS, I have noticed my idle is a lot lower than it was... and it was low already before!!! Pretty embarrassing I tell ya when driving around and stalling. Some hot tart on the sidewalk watching and laughing thinking I can't drive stick lol My tach is not working at the moment due to have a sohc cluster with my sr20. Anyways I think I can raise idle with the IACV. Any comments or questions are appreciated EDIT: I was able to raise the idle. Not sure its set at, but I don't seem to stall at stops now. It still drops down a lot, but then bounces back enough to keep car alive. I am happy. I might raise idle a little bit more in near future. Not sure how much more screw can come out lol
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Last edited by 2plus4plus0eq6; 07-29-2015 at 01:02 PM.. |
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#38 |
Post Whore!
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Do you have a BOV that vents to atmosphere?
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*My SR20VET* Does your VTC gear rattle in your S14/15 SR? PM me. |
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#39 |
Zilvia Junkie
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It's recirculating and vacuum is like -25. I build boost no problem to about 13 pounds which is what my controller is set at
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Last edited by 2plus4plus0eq6; 07-29-2015 at 04:58 PM.. |
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#40 |
Post Whore!
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What is your base idle?
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#41 |
Zilvia Junkie
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I don't know. My tach isn't working. Sounds like it's around 1000
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#42 |
Post Whore!
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Let's fix the tach next, then you can set base timing.
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#43 |
Zilvia Junkie
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Totally agreed. Its the next thing on my list. Budget for the year is gone. Will have to wait til spring.
Quick question. Does increasing base idle make it difficult to set timing properly since revs are now higher? does there need to be a proper idle speed so timing can be set? I ask because I believe when engine revs go up, the engine will advance timing on its on. This may not be the case since I am not increasing the idle by much? thanks
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#44 |
Join Date: Jul 2015
Location: Mid Mo.
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Trying to adjust timing to make up for idle changes or possible idle issues will be a bandaid on a stabb wound. Will probably cause some valvetrain issues at some point in the timing curve. Gonna go against my better judgement and guess that it will give you some valve noise or worse around 4000-4500 rpms. Not that familiar with the sr's but i did the same thing on my ka to make up for a wore out iacv and at about 2800-3000 i got valvetrain noise and a little loss of power. I would set base timing and try to get a nice smooth idle that you can just barely feather the clutch and get your car moving without giving any throttle at all. If that makes since to you. KA has a little more torque and it idles right at 940ish and i can do it but i dont like dragging my clutch out like that.
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