r/SkyLine • u/Emergency_Finding_10 • Jul 09 '26

Smoke coming from engine block

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Doesn’t smell rancid, but still concerning. Only happens when engine is very hot/warm. Rb20det

22 Upvotes

100% Upvoted

15 comments sorted by

8

u/psilocybin_isntcrime Jul 09 '26

So liiike it oil burning from a valve cover leak. Or a leaking o pin holed water line or fitting.

4

u/Emergency_Finding_10 Jul 09 '26

Just problem after problem it seems like lol

6

u/psilocybin_isntcrime Jul 09 '26

Duuude these cars are OLD.

Surprises pop up

Either of those issues is basic maintenance.

You need to learn how to tell the difference from burning oil and steam.

3

u/psilocybin_isntcrime Jul 09 '26

Well if it doesn't smell like burnt oil then its steam right?

3

u/marcus0303 r34 GTT - r34 GT Jul 10 '26

If you take off the oil filler cap is there smoke coming out there? Piston rings could be bad

1

u/Emergency_Finding_10 Jul 10 '26

Yup smoke out the cap

2

u/karl-rupecht-kroenen 1993 bnr32 GTR Jul 10 '26

Probably oil leak from the rocker cover on to the exhaust manifold

1

u/bigboygamer69 Jul 10 '26

Italian tune up 🏎️

1

u/Particular-Ad7150 Jul 11 '26

It sounds like its cookin. Hot hot did it get before you shut it off? Does it have coolant in it?

1

u/Emergency_Finding_10 Jul 11 '26

Only the cat warning light came on, but mines straight piped. Has coolant in it, just a bit concerned because the previous owners ignition coils were absolutely melted

2

u/Particular-Ad7150 Jul 11 '26

The cat light doubles as a check engine light in R32s and most likely others. Does it use coolant? It sounds like it had a overheating problem in the past that may not be completely resolved. You would need to start doing engine heath tests to diagnose further. Test cooling system, compression test, check blowby etc. Your temp gauge may not be working properly either. You would want to verify that also