MarkCayabyab

Hey guys, so to start off i have a vx gsr swap. Im losing coolant so i decided to do a compression test to see if its my head gasket. Pulled out the ecu fuse and i stepped on the gas while i was doing my compression test. My test results are..

Normal:
1:225
2:215
3:235
4:235

W/ Oil:
1:250
2:250
3:260
4:265

Don't know what the numbers mean but i don't know if my compression accuracy is considered close enough to be good. any help guys? much appreciated

93egSLEEPER

Those compression numbers are great for a stock GSR. A compression test would not be my first step in testing the HG though, the rings determine compression primarily. You should be able to look down the hole w/ the plugs out and see water on top of the pistons if in fact the HG is leaking.

You don't see any leaks? Smell it burning off? How long does it take the car to warm up and where does the needle sit?

MarkCayabyab

I would say it takes about 5-10 mins for the car to warm up starts off around 1500rpm and then eventually goes down to about 700-900. Only leak that i ever saw was at the at the edge of the head near the upper hose. BUT, i wasn't sure if it was from the other hoses and what not. But other than that, i don't smell any coolant whatsoever. thanks for the reply man! i was pretty surprised too cause the person i bought it from was from Craigslist and man did he look suspicious lol.

MarkCayabyab

Lemme add further information that could help.

No smoke whatsoever. Engine is almost at 100k. Yes I did a valve adjustment the day before. I warmed up the engine for 20 minutes. No visible leaks or puddles.

93egSLEEPER

If you HG was going you would notice incrased amounts of steam, possibly a miss at idle and when accelerating, and excessive coolant use, not just a little bit over a long period of time. Sounds like you're in the clear. Top it off and keep truckin

pityocamptes

You tested it at WOT with no spark plugs in any cylinders, correct? Also, if one of your cylinders and plugs look like they are brand new and shiny you have a small leak in the HG. Look down the cylinder and see if one of the piston tops looks like it just came out of the box - or very clean when comparing them to the other ones.

MarkCayabyab

Yes i tested with no spark plugs in any cylinder. And i'm blowing white smoke out of my exhaust any ideas? This happens when i start it up but it stayed like that for about 10-15 minutes. i searched and people said head gasket O_O so i mean idk what to think.

jbpnoman

Are you sure it's white and not blue? Dry/wet numbers like that lean more towards poor ring seal than a head gasket. A leakdown test would give you a better idea without ripping into the motor, though.

jdmh22eg2

i have had a stuck inj blow white smoke like a blow hg, never went away till i found the leaky inj. not saying thats your issue but another place to look if your sure its white smoke

MarkCayabyab

I am most definitely sure it's white. but before i get a leak down test, is it possible that white smoke can be cause by a leak in the exhaust system? i see water dripping ever since i had a stuck silencer in my axle back and i was tugging the sht out of it lol. and what do you mean inj? injector?

jdmh22eg2

yes injector. it was stuck open when ever you primed fuel pump.