E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-21-2016, 12:41 AM   #1
AndreBXP
Registered User
 
Join Date: Jun 2014
Location: Long Island
Posts: 826
My Ride: 2001 BMW 330ci
Good compression then 0 Compression in 10 seconds

Alright guys this has me stumped. Two days ago I was doing a compression test on the E36 in my Sig to check the health of the 350k mile motor and all was going as usual. To my surprise, I had consistent excellent numbers across the board.

After putting everything back together I went to start the car, and it took an extra crank or 2, but it started. Car was running pretty rough, but I let it idle and it just stalled. Went to restart and I could tell right away that there was no compression based on the sound; it sounded like it was cranking with no plugs in. The compression tester verified what I heard, 0 compression across the board.

So after that I added some oil to the cylinders to combat any cylinder washdown that might have happened and there was still no compression and wouldn't start.

After that I added ATF to the cylinders to try and rid any carbon on the rings and let it sit over night. Next morning I evacuated the cylinders and tried again. Nothing...still 0.

I pulled the valve cover and the timing chain is still in tact, and the motor is as clean as my 100k motor.

I got new spark plugs and tried to fire the engine up but the best I got was a cylinder that fired twice and nothing after that. Motor still sounds like it has no spark plugs in it.

Then the starter sized so after getting that to somehow work again I know I'm limited in how much cranking I can do so I really want this thing to fire before I move on with this project.

Does anyone have any idea what can cause a solid motor(M52b28) that tested with great compression suddenly lose all compression in a matter of 10 seconds. Nothing I have tried worked and my last hope is that changing the oil will restore compression if the oil was so contaminated with fuel that the rings can't seal.

I'm really all ears to any ideas because I can't go on with this project if the motor wont start.

Thanks in advance!
AndreBXP is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 11-21-2016, 01:02 AM   #2
Rob43
OEM ///Member
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 8,006
My Ride: 03 331Ci 5spd R1200R
It's like a good murder mystery...

I'm stumped on the fact that ALL 6 cylinders are equally effected at the same time. It's like all the valves are open all at once, fairly impossible to do. If you can't solve this problem easily, the next thing would be a bore scope down each spark plug hole for visual inspection. If that doesn't reveal anything I believe the head will need to come off.


Good luck,

Rob43
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 SCCA
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

I BUILD SUSPENSIONS (Consult) FROM MILD TO WILD FOR RWD & Xi E46's
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I Know How To Fix The Rear "Bouncing" Problem On Your Cheap Coilovers Like: Jom RL FK SE & RK.
Rob43 is offline   Reply With Quote
Old 11-21-2016, 01:34 AM   #3
BaliDawg
Keepin' it real stock
 
Join Date: Aug 2012
Location: Riverside, CA
Posts: 5,524
My Ride: E24 E32 E46 E39 E84
Is it possible that it's flooded AND the compression tester broke all at the same time?
__________________
///Mmmmmm...
BaliDawg is offline   Reply With Quote
Old 11-21-2016, 01:57 AM   #4
BKMrSteel
Registered User
 
Join Date: Oct 2014
Location: Ga
Posts: 1,199
My Ride: 99 328i
Quote:
Originally Posted by BaliDawg View Post
Is it possible that it's flooded AND the compression tester broke all at the same time?

The engine spins freely, as though it's making no compression? Is it possible you hydro locked your engine cranking it full of fuel?

I feel like you would have to have had a bad injector to fill up a cylinder with fuel quickly enough, and on all 6 seems unlikely. I'm interested in what happened.

Rob43 suggested a borescope, perfect place to start.
__________________
<a href=http://forum.e46fanatics.com/showthread.php?t=1094528 target=_blank>http://forum.e46fanatics.com/showthread.php?t=1094528
</a>
BKMrSteel is offline   Reply With Quote
Old 11-21-2016, 03:40 AM   #5
das_autobahn
Registered User
 
Join Date: Aug 2016
Location: asheville
Posts: 508
My Ride: 2004 330ci coupe
Good compression then 0 Compression in 10 seconds

so as the title states...

it took you 10 second to install all plugs and coils and start? i dont think the plugs are seated. or a valve is stuck open on each cylinder or you have holes in each piston.

Last edited by das_autobahn; 11-21-2016 at 03:57 AM.
das_autobahn is offline   Reply With Quote
Old 11-21-2016, 05:18 AM   #6
BKMrSteel
Registered User
 
Join Date: Oct 2014
Location: Ga
Posts: 1,199
My Ride: 99 328i
Quote:
Originally Posted by das_autobahn View Post
so as the title states...

it took you 10 second to install all plugs and coils and start? i dont think the plugs are seated. or a valve is stuck open on each cylinder or you have holes in each piston.

He said it ran poorly for a little bit, and reinstalled everything a few times now with all this testing.
__________________
<a href=http://forum.e46fanatics.com/showthread.php?t=1094528 target=_blank>http://forum.e46fanatics.com/showthread.php?t=1094528
</a>
BKMrSteel is offline   Reply With Quote
Old 11-21-2016, 02:25 PM   #7
Loaded325i
Registered User
 
Join Date: Aug 2011
Location: oregon
Posts: 491
My Ride: bmw 325i
When you fiddle with stuff that doesn't need to be touched that's when you increase the chance of screwing something up. And this is just advice, there is no pun intended. You can do relative compression tests based on the current spike on the coils. You can disable the igniton and just do it by sound as you have demonstrated. I never check compression unless there is an issue to diagnose. Period. You should probably try to retrace your steps to see, where you went wrong
__________________
A mechanical hobbyist and car enthusiast
1971 Datsun 240z Devil Z red
1999 740il Titanium Silver
2004 BMW 325i CW,PP and Sports Package
1996 toyota avalon-263,000-Sold
2003 Lexus Is300-Sold
2000 Acura TL-Sold
2000 Accord 5 speed-Sold

Last edited by Loaded325i; 11-21-2016 at 02:27 PM.
Loaded325i is offline   Reply With Quote
Old 11-21-2016, 02:58 PM   #8
Yewzer B Lewzer
Registered User
 
Join Date: Jan 2013
Location: St. Petersburg FL
Posts: 2,255
My Ride: 2003 325i
My guess is its flooded and it washed the rings of oil. I would squirt a bit of oil in each cylinder and re-start.

Sent from my SM-G930V using E46Fanatics mobile app
__________________

^^Blue Ridge Parkway^^ '03 325i. '74 Jeep CJ-5. '93 Sailfish 170XL. '12 Westside SS Longboard. One of these four are sure to be running at any given point in time.
Yewzer B Lewzer is offline   Reply With Quote
Old 11-21-2016, 03:02 PM   #9
GhostFlame
Registered User
 
Join Date: Jun 2011
Location: Toronto, ON
Posts: 596
My Ride: E46 Sedan
OP - did you pull the fuel pump fuse when doing your test?
__________________
GhostFlame is offline   Reply With Quote
Old 11-21-2016, 03:06 PM   #10
jfoj
OEM ///Member
 
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 22,858
My Ride: 330CiC, M5, X5, E93
Get a drinking straw, the long once from 7-11 or Popeye's are the best.

Open a new quart of oil, drop the straw in the oil, plug the end with your finger, and put the straw down the sparkplug hole a remove your finger and allow the oil to drain into the cylinders.

Do this for all cylinders, crank engine over about 10-15 revolutions. Put the spark plugs back in and try to start the engine. You should have a STRONG battery, if you don't jump start the car, see if you can get the engine started. Allow the engine to run AT LEAST 3 minutes, not matter how rough as long as there are no mechanical noises.

If the engine does not smooth out, shut the engine off and then restart after 30 seconds. Engine should run smooth now, allow engine to warm up.

Pull the dipstick, check the oil color and smell it for fuel. If it smells like fuel, you probably need to change the oil either way. Maybe before you even try to start the engine.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
jfoj is offline   Reply With Quote
Old 11-21-2016, 08:19 PM   #11
AndreBXP
Registered User
 
Join Date: Jun 2014
Location: Long Island
Posts: 826
My Ride: 2001 BMW 330ci
Motor is shot. Piston 3 is in many pieces and cylinders have coolant in them; I'm assuming a cracked head and/or block. Never seen anything like this happen before. Found stop leak in there as well, so this is just a shitshow of a motor.

Picking up a new M54b30 and a ZF to swap in on Wednesday. Will post updates in the thread in my Sig if you're interested in how it goes.

Would never have suspected this unless I saw it with my own eyes though the borescope.

Wish me luck.

Last edited by AndreBXP; 11-21-2016 at 09:36 PM.
AndreBXP is offline   Reply With Quote
Old 11-21-2016, 08:33 PM   #12
Rob43
OEM ///Member
 
Rob43's Avatar
 
Join Date: Oct 2009
Location: Richmond VA
Posts: 8,006
My Ride: 03 331Ci 5spd R1200R
Knew it was gonna be something real bad...

Good look with your M54B30 swap.



Rob43
__________________



Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 SCCA
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

I BUILD SUSPENSIONS (Consult) FROM MILD TO WILD FOR RWD & Xi E46's
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I Know How To Fix The Rear "Bouncing" Problem On Your Cheap Coilovers Like: Jom RL FK SE & RK.
Rob43 is offline   Reply With Quote
Old 11-21-2016, 09:59 PM   #13
das_autobahn
Registered User
 
Join Date: Aug 2016
Location: asheville
Posts: 508
My Ride: 2004 330ci coupe
called it, sucks man
das_autobahn is offline   Reply With Quote
Old 11-21-2016, 10:21 PM   #14
mikeetastic
Registered User
 
Join Date: Nov 2012
Location: Cali
Posts: 1,126
My Ride: lots of 3
E36 ms42 on m54b30 ms43? Sounds like a good diy post specially the wiring side and converting from drive by cable to electronic TB.

Keep us posted.
mikeetastic is online now   Reply With Quote
Old 11-21-2016, 10:31 PM   #15
zander271
Registered User
 
Join Date: Mar 2010
Location: Seattle, WA
Posts: 3,439
My Ride: 6spd ZHP/5sp XI
Sucks Andre GL with the swap.
__________________

ZHP Mods: JB Lightweight fly wheel (10.5 pounds), Koni FSD ProKit, Supreme Power Drop Hats, Hotchkis front(30.2mm)/rear(25.4mm) sway bars, Sprint Booster, AFE Stage 1 Intake, Morimoto EvoX-R Headlights, Orion V4 Angel Eyes, Satin Black 18x9 ET42 APEX ARC-8 Wheel

330xi Mods:Front Koni Yellow Struts and Rob43 Rear 9 Way adjustable Rear Dampers,Custom Sport Springs,Supreme Power Drop Hats,ZHP 5 speed shift knob
zander271 is offline   Reply With Quote
Old 11-22-2016, 12:42 AM   #16
BKMrSteel
Registered User
 
Join Date: Oct 2014
Location: Ga
Posts: 1,199
My Ride: 99 328i
Good luck with the swap. Sadly, I think everyone knew it wasn't good. Do the hard coolant lines!
__________________
<a href=http://forum.e46fanatics.com/showthread.php?t=1094528 target=_blank>http://forum.e46fanatics.com/showthread.php?t=1094528
</a>
BKMrSteel is offline   Reply With Quote
Old 11-22-2016, 10:20 AM   #17
Dave1027
Registered User
 
Join Date: Jan 2013
Location: California
Posts: 1,845
My Ride: '06 IR zhp coupe
Still don't understand how you had good compression across the cyls 10 seconds before. That's just freaky
Dave1027 is offline   Reply With Quote
Old 11-22-2016, 12:23 PM   #18
WieGeil
Registered User
 
Join Date: Aug 2010
Location: SoCal
Posts: 36
My Ride: God's Chariot
Just don't understand how it could go from running fine to a cracked piston and free coolant in a matter of minutes. Never heard of an engine hydrolocking so quickly, but that's the only thing I can think of that explains it.
WieGeil is offline   Reply With Quote
Old 11-22-2016, 12:51 PM   #19
BaliDawg
Keepin' it real stock
 
Join Date: Aug 2012
Location: Riverside, CA
Posts: 5,524
My Ride: E24 E32 E46 E39 E84
Quote:
Originally Posted by WieGeil View Post
Just don't understand how it could go from running fine to a cracked piston and free coolant in a matter of minutes. Never heard of an engine hydrolocking so quickly, but that's the only thing I can think of that explains it.
We're all eagerly awaiting the cause of this sad mystery...

OP, any updates?
__________________
///Mmmmmm...
BaliDawg is offline   Reply With Quote
Reply

Tags
no compression, no start

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 03:46 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use