milky crap on cap!!

[mk3tattoos]

i was hoping the milky crap would stop coming up but it seems to show it self every time i let the engine warm up. there is no sighns of water in the oil or on the dip stick, no oil in the coolent.

i just did a block test to see if there is exhaust gasses in the coolent system and it came up negitive, (stayed blue) and i tested for over 5 min to make sure.

should i do a compression test next? if it was loosing compression would'nt the block test have showed it?

i was thinking it might be a very small leak in the oil cooler.

 

[IJ.]

"Might" be condensation considering the other tsets done otherwise>>

:runaway:

 

[CyFi6]

Sending an oil sample into some place like blackstone labs will tell you for sure if there is coolant in there

 

[GrimJack]

Pictures of said milky crap might help, too. A little is generally ok. A lot is not. However, those are really subjective measurements...

 

[super.secret.supra.club]

agree^

 

[mk3tattoos]

i was going to take a picture to! but i am going to do the compression test right now while the engine is cold. i will do a dry and wet test. then i will change the oil if it test good and drive around for a bit and check the cap for milky crap, if it is ill take pics and then send a sample of oil to blackstone.

other than the milky crap the car is running realy stong
thanks for the advice and help fellas!!!!!!

 

[mk3tattoos]

so it was 110 on all 6 cyliders, and wet was at 125psi on all 6.

i think i am going to try another compression tester fom my buddy, i rented this on from oreilly's and it seems kinda cheap.

it seems strange that all 6 are the same and that low! if they are that low (when i retest with a high quality one), i guess i have to do the headgasket

 

[CyFi6]

I wouldn't consider that to be conclusive of a head gasket at all. If it is pretty severely blown you will likely see low compression one one or two cylinders but not even across all of them. Im not sure what the spec is for that engine for compression but those results don't point to a head gasket issue.

 

[mk3tattoos]

oh good! i have just seen some 1j's around 150psi to 180psi


should i have done the compression test with the engine warm, i hear mixxed reviews on it?

 

[mk3tattoos]

if the timing belt was off a tooth would it effect the compression? with comression that low, would i still have all the power? mabey it being off a tooth is why i am getting black soot on all spark plugs as well!

this engine feels as strong as my 7m that was modded pretty good, rc550, 57 trim ct, safc2, ect. and i have not realy even taken it up to redline yet.

how do i make sure its not a tooth off . last time i went to check timing, my timing light would not work, so i have to buy another one.

thanks for the help!

 

[CyFi6]

Compression specs are always with a warmed up engine. As things warm up the rings/pistons expand and create a tighter seal in the bore which is why you are supposed to test it warm. To check the timing belt you just need to remove the timing cover and make sure the marks both line strait up at #1 TDC compression. Someone else will have to chime in on whether or not that would actually cause your compression readings but find out what the spec is for your engine before you do anything else.

 

[mk3tattoos]

checked the timing belt and the marks both lined strait up at #1 TDC.

changed oil and saw that the intercooler pipe on the bottom passanger side was never tightend down! put all the spark plugs back in and took it around the block to see if the cap would get milky stuff on it, here is a pic of what it looks like. note, this is only the 3rd time driving the car for no more than 10min and about the 8th time letting it fully warm up.

got back and took pic, then took all the spark plugs out, none of them were covered in black dry soot anymore (probably getting that way because of IC pipe). retested compression with engine warm and they all went up about 5psi, so now they are 115. then did the wet test and they all went up 5 as well, held 130 now.

so i can see about getting another compression tester or move on to the next set of test, like sending off oil sample to blackstone and doing a leakdown test (how do i do a leak down test?) or if its fine with the compression were it is and i just need to drive the car on the freeway for awhile to see if the milky crap will go away.

 

[IJ.]

Are you holding the throttle WIDE Open when doing the comp test?

 

[grimreaper]

^ that and condition and age of battery? short drives and idling do little for a recharge on the battery.

I'd take it out for a solid 1/2 hour to an hour drive. Short drives and idling till warm make it difficult to get all the condensation out. Not to mention its colder out now. Look at a pic of a jz block. Where are the oil ports in relation to the coolant passages? If its like the 7m, you have to totally push through the coolant passages to get the oil/coolant mix. I'd expect a block tester to be postive if your getting oil/coolant mix.

The compression results look terrible man, something isnt sealing right!

 

[mk3tattoos]

IJ- i held the throttle wide open when doing the compression test. i have the 12v mod so i just pulled the fuel pump fuse and efi, is that ok? heard to pull ignition fuse but not sure if i should.....

grim- the battery is old, but seems to crank the engine good, i should borrow a charger and get it fully charged and test again with the charger on it.

i think the compression numbers are to low as well, but would'nt the performance and power of the car by low as well?

like i was saying before she is strong, even without getting into boost it just seems realy good to me.

going to get a known working tester and charge the battery fully and also keep it on while perfoming the test today.

funny i was just thinking what you were up to yesterday GRIM!!!

 

[mattsplat72]

I had to finally drive my car up to Bellingham and back before I got rid of the condensation. Honestly Gary I think you are being a little paranoid, Which is understandable. I am still breaking mine in too. I haven't taken it over 90 yet. I only drove it to Everett and Bellingham. Still pop the hood every time I park it, listen to it, and replace the cardboard under it every day to check for leaks. The compression test equipment from Shucks are crap. Go to Napa and get the test for exhaust gas in the coolant and be done with it. Remember it isn't a 7m I am struggling with having a reliable motor as well. If you are afraid of a long drive let it run in the drive way for an hour.

 

[mk3tattoos]

it did pass when i tested the coolant for exhaust gasses

 

[grimreaper]

IJ- i held the throttle wide open when doing the compression test. i have the 12v mod so i just pulled the fuel pump fuse and efi, is that ok? heard to pull ignition fuse but not sure if i should.....

grim- the battery is old, but seems to crank the engine good, i should borrow a charger and get it fully charged and test again with the charger on it.

i think the compression numbers are to low as well, but would'nt the performance and power of the car by low as well?

like i was saying before she is strong, even without getting into boost it just seems realy good to me.

going to get a known working tester and charge the battery fully and also keep it on while perfoming the test today.

funny i was just thinking what you were up to yesterday GRIM!!!

LOL took a while to get motivated to put the motor together, AGAIN. Had to take a break from the supra life. Damn things will drive you over the edge faster then they do 0-60.

Id say take it for a nice long spin. Give it chance to redeem itself!
I suspected my 7m had a leaking headgasket since I've owned it. No test ever confirmed it until 2 years later though. Only sign over the years was a funky reservoir water level after hard runs. Took a day or two of easy driving for it to "refill" the radiator on its own. And every now and then a ting of exhaust smell in the reservoir. Green coolant smelled sweeter then the g-05 so it wasn't until I switched to the g-05 that i even noticed it. Yes thats right, I was the guy in the walmart parking lot smelling my coolant. I've developed some freaky compulsions since owning this car.:yikes: Mainly from reading the countless horror stories on the internet though.

Are the cams in time with the crank?
crank pulley could be coming apart too. Some what common on the jz's. put a chopstick or coat hanger down the #1 sparkplug hole and move the crank to TDC. Should see the stick rise and level off a few degrees before and after TDC.

 

[mk3tattoos]

i did the chop stick trick and everything lined up, my friend was telling me i should give it a chance to redeem itself today too and in a week he will bring me his snap on compression tester to see what it reads.

so tomorow i will go for a nice long drive and report back, hopefully the cap will clear up

they sertainly will drive you crazy and keep you up all night trying to figure it all out in your head, lol... hang in there and dont give up buddy. ill be checking on your progress as well.

and as always, thanks for the help and advice. keep it coming!!!!!

 

[mk3tattoos]

t\milky stuff seems to be going away! went for a realy long drive then looked at the oil cap and wiped of the mily oil and then drove it back home, checked the cap and there was only a tiny little spot of white. drove for a tatal of 45min i will take it out again for a longer drive tomorow.

blackstone is sending the test kit for the oil, so i will still do that just to see how my oil is