r/300zx

▲ 3 r/300zx

300zx running rich and smoking behind the engine

My 90 300zx na has been recently really running rich and smokes from back of the engine after drive. The smoke is white and mostly doesent smell like anything. What could be the reason to this?

Thanks already for every reply and suggestion!

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u/Luxufighter — 8 hours ago
▲ 1 r/300zx

1995 cat back on 1996

So I'm trying to buy a cat back but I cant find enough information on the flange differences on both the new exhaust and the 96 cats compared to the 95 to pull the trigger. can someone let me know if i just have to cut, rotate, and weld the 95 flanges to fit or are the exit flanges on the 96 cats also something I have to modify and in that case, can I just weld the old flanges on the cat back with a new gasket and be fine?

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u/OkActivity4090 — 8 hours ago
▲ 1 r/300zx

Power Steering Return Hose fitting?

I'm doing some work on my JDM 1990 TT and have found a leak on the power steering return hose (short straight rack to reservoir one).

There is a metal crimp fitting thing holding it on that I can't find anywhere on a diagram. I've tried cutting it but it still won't pry off despite cutting it down to the hose surface. Does anyone have advice for removing this or have I cut something I shouldn't have?

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u/Huge_Berry5566 — 10 hours ago
▲ 3 r/300zx+1 crossposts

Headlight issues

When the cars running, the left headlight will never turn on but the right does occasionally, and vice versa when the car’s off. Already replaced the relay. I’m getting super low voltage when the headlight’s not working (~2-4v), and normal when working (~14). I already cleaned off the switch with some electric contact cleaner, just wondering if anyone else has had the same issues.

Thank you in advance

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u/steel_prod — 1 month ago
▲ 1 r/300zx

Brake Drag

I'm having an issue with my rear brakes slightly dragging that I can't seem to fix. The rear right always drags and the rear left starts to drag after I've been driving for a while. Both rear rims are also considerably warmer than the fronts, becoming uncomfortable to touch after a long drive.

I think it's related to some residual hydraulic pressure, because if I crack a bleeder, the drag stops until I engage the brakes again.

So far I've tried adjusting the handbrake and brake booster on both pedal and engine side, and have replaced the rotors, pads, calipers, rubber lines, and master cylinder.

The car has had this problem ever since I got it, and I've run out of parts to replace trying to fix it. Any other idea on what's up?

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u/WhomstdveYouTalkinTo — 13 hours ago
▲ 1 r/300zx

Headlights not working

Title. My headlights won’t come on on my 86 turbo. They pop up just fine, but after that only the passenger side occasionally turns on. I already cleaned the switch, I’m reading both continuity through the switch and voltage out of the switch when the stalk is turned. I’m reading 14 volts into the relay from the harness (driver side fender, brown and black). I just recently replaced the brown relay, and both relay harnesses have continuity to both headlights. The fuses are good. The bulbs are good. I’m honestly stumped as to what it could be. My only thought could be the black relay is bad, but even when I pulled it the passenger side headlight came on somehow. Any links to wiring diagrams would be appreciated. Thank you!

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u/steel_prod — 21 hours ago
▲ 1 r/300zx

High Idle/No AC

Last year my car started idling high and strangely the ac would not work. It blew air, but not cold. I mention the A/C because both always occur together. Took it to shop where they thought it was and egr issue, then they said IACV. I also noticed during the winter that it rarely occured, now with hotter days and summer coming up, it is happening again. Any ideas or suggestions?

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u/Empty-Lab3272 — 22 hours ago
Week