Low oil pressure, knock, chatter

Low oil pressure, knock, chatter

Car has freshly built k24a2 with DC 3.2 cams, super tech springs, 12.5 wiseco pistons.

Car was running strong after street tune.

Took car to work, no issues. After letting it cool for an hour, I cranked the car only to hear metallic grinding. Car started and my Link ECU threw me into limp mode, limiting rpm. Took a short log to collect idle and part throttle data. Only issue I found was low oil pressure at idle, around 70 kPa. Car began overheating too.

During this time I heard a metallic chatter, knock, something coming from the engine bay.

Investigation:
Skipped timing? - timing looked fine. No debris/excessive wear on cams, rockers.

Spun bearing? - oil showed very fine, power-like metallic dust that’s magnetic. I consider this to be the “break-in” dust rather than bearing material. Will drop oil pan soon. Will cut oil filter.

Knock?-Data log showed no knocking detected, raw frequencies look no different than when engine ran good.

VTC chatter?-Based on data log: Cam angle vs target was spot on!

Images and log file.

To do:
VTEC and VTC oil filter clogs?
Damaged rockers?-check valve lash, if nut came off.
Oil pump clog?
Check oil pan
Check rod cap play
Thrust washer play?

Lower than normal oil pressure is the culprit here. Will check oil pan; oil pump, rod caps. Any other ideas?

u/HSPrzepa_ — 18 hours ago

92 civic blinker gremlin

Problem: When headlights are on, front blinkers don’t work.

Observations: Both blinkers work, but blink rapidly with the headlights off. All four hazards work, and blink at normal pace when headlights off.

Troubleshooting:

-new, correct (dual filament) bulbs, housing, and pigtails installed. (Front only)

-new turning stalk installed.

-cutting ground wires on both front blinkers solves the problem, but blinking becomes rapid.

-headlights run on separate circuit, not sure why they would prevent blinkers from blinking.

-Issue remains after isolating left front blinker: disconnecting rear blink harness, disconnecting front right blinker pigtail, and cutting / connecting front left blink ground to clean ground spot on shock tower. This suggests I have a short in my signal wire?

Attaching blinker schematic for reference.

Edit: solved the issue. The new pigtails for the blinkers used the red wire for signal, green wire for parking light, and blue wire for ground. Considering that my stock harness used a red wire for parking lights, I assumed it went with the red wire in the pig tails. Nope! Swapping the red/green wires fixed the issue!

u/HSPrzepa_ — 20 days ago

Accidentally made a small kink along my PTFE fuel line while trying to push it through the fuel tank entrance. Is there a way to repair it? Was thinking of shoving a screw driver while heating the line.- the kink is close to the entrance. Or is it small enough to not affect performance?

u/HSPrzepa_ — 4 months ago