HomemadeTurbo - DIY Turbo Forum

HomemadeTurbo - DIY Turbo Forum (https://www.homemadeturbo.com/)
-   Forced Induction (https://www.homemadeturbo.com/forced-induction-7/)
-   -   what happend if? (https://www.homemadeturbo.com/forced-induction-7/what-happend-if-13413/)

kyle h. 12-24-2003 02:22 PM

what happend if?
 
-no compression accross all cylinders.
-engine ran (hardly) after putting oil in the cylinders, smoked a whole lot and blew the dip stick out of the hole.
-engine had enough oil.
-pulled head.
-head gasket looks fine.
-rings are holding oil in the cylinders. (not leaking, yet?)
-head is fine.
-pistons are fine.
-engine spins freely.

what happend:

boosting ~10psi, engine shut off quietly.

when i popped the hood, after it died, there was oil bubbling out around the o2 sensor and adapter plate. turbo has bad seals in it, was blowing burnt oil and water out of the o2 housing.

-14b turbo
-chipped ecu
-sohc zc ~50k miles

for the record i wasnt trying to run 10psi, but i was using a carb spring for wastegate and didnt realize it didnt need a whole lot of tension. the turbo was also spooling 5 psi around 2500 rmp.



turboboy 12-24-2003 03:22 PM

Re:what happend if?
 
i think your rings are shot...no compression and the dipstick getting blown out=hardcore blowby imo

BLACKSI 12-24-2003 04:08 PM

Re:what happend if?
 

Originally Posted by kyle h.
-engine ran (hardly) after putting oil in the cylinders, smoked a whole lot and blew the dip stick out of the hole.

sounds like you were running around 25psi of crank case pressure :o

Beau

kyle h. 12-24-2003 04:26 PM

Re:what happend if?
 
ok, oil isn't glittered with metal either. all cylinders are holding oil, not leaking past the rings.

haha...well i just took out my ecu, and saw i put the chip in backwards...wow, sometimes i amaze myself...

i'm taking a guess that the compression tester was bad also.

Semnos 12-24-2003 08:02 PM

Re:what happend if?
 
damnnnn lol you need a new chip...I hope you didn't fry your ECU

HMT-Admin 12-26-2003 09:32 AM

Re:what happend if?
 
Make sure the head is true, (not warped) also check the deck of the block for warpage. Flip the head upside down (level) and fill gas in the combustion chamber (valve area) and see if the valves leak. 0 compression is no good, it should be something obvious like head gasket/ weak rings etc.. May want to pop out just 1 piston to check it out.

Jeff

kyle h. 12-26-2003 07:16 PM

Re:what happend if?
 
the compression tester was bad. it had something stuck in the valve. i put a new head gasket back on and got it all back together, but still no luck.

if i try to crank the engine with the chip in backwards several times, can it damage the ecu? i wouldnt think so, but it wants to start and then it goes flat.

88crxSi 12-27-2003 07:15 AM

Re:what happend if?
 
have a sparge ecu just for starting it? dont run it, ,just start it.. and put the chip in the proper way ;)

crxfreak88 12-27-2003 11:55 AM

Re:what happend if?
 
How do the ringlands look like. And I assume your timing did not jump. Just a thought good luck. ;)

kyle h. 12-28-2003 08:49 PM

Re:what happend if?
 
got a new compression gauge.

4 = 170
3 = 60
2 = 70
1 = 50

:(

well i guess i'll find out tomorrow whats wrong with it. this will be the second time taking it apart during this xmas break.

btw, it was mobil 1 5w30 that wasn't leaking past the rings.


All times are GMT -5. The time now is 06:13 AM.


© 2024 MH Sub I, LLC dba Internet Brands