Cold Compression Test Questions

[Likethunda]

Hello, Im currently replacing a bad fuel injector on my 300zx TT

I wanted to do a compression test, but (i cannot start the car) obviously because i removed the Plenum.

Should i just wait until i put everything back together for a warm compression test.

or can i still get some Good DATA from a cold compression test?

[ROGUE_RB]

Its better to test cold..just pull the fuel pump fuse and test, it won't start just like being on a crate at the japer's

[Highway Riding]

Some say a leak down is more important. Do both if ya can. Leakdown & compression

[Likethunda]

Its better to test cold..just pull the fuel pump fuse and test, it won't start just like being on a crate at the japer's

I asked because everyone tells me that to get an accurate compression test it needs to be warmed up first.. but you say cold is also fine... Hmmm yay or nay

[ROGUE_RB]

If u test it cold it's going to recreate initial first starting.. If it runs like crap then it's not gonna run much better hot..test it cold if ur numbers aren't quite what u want them to be, put a small shot of oil in each cylinder and retest.. if it improves u need rings

[jr_ss]

Your numbers will be more accurate if you were to do it warm/ at running temp. However, you can get an idea what your comp is with it cold. Leakdown tests give you a better overall picture of the health of your engine.