Misfire Issue & Internals Upgrade Suggestion

borikangel · 04-04-2013, 10:54 AM

Hi,

I got BMW 135i 09/2008 with the following FBO:

1. AA Intercooler
2. Chargepipe
3. Meth with dual nozzle
4. DCI
5. Low Temperature Thermostat
6. Nitrous w/ .0027 jet
7. AR Downpipe
8. Midpipe
9. aFe Axleback w/o muffler
10. JB

On december a misfire was presented in cylinder 3. I moved the injector to another cylinder, programmed and new oem spark plug so no more misfire after that. Then the last week i was running with another BMW and the misfire and lean mode came again on map 3. So I moved the ignition coil to another cylinder to discard the ignition coil but the issue came again in the same cylinder. Before the second issue on map 0 didn't have the issue. Now the check engine don't turn off in anyway at any maps and misfire on cylinder 2 and 3. I already verified the compression in all piston:

Firewall
6- 150psi
5- 150psi
4- 124psi
3- 92psi
2- 94psi
1- 150psi
Bumper

I don't have any white or black smoke from the exhaust or oil mixed with water.

I attached the injector and spark plug pictures from cylinder 3. The spark plug smell gas so i don't if the injector remain on or is dirty. So I sent all 6 injectors to http://www.injectorrx.com/

After i saw the compression I'm thinking about new internal upgrades like for example new pistons and/or cylinder head. I want too some recommendation according to my modifications or general modifications.

GeorgiaTech335coupe · 04-04-2013, 10:56 AM

Not to alarm you too much, but those compression numbers would have me very, very worried. You don't want to see more than a 10% variance between cylinders.

GeorgiaTech335coupe · 04-04-2013, 10:58 AM

Do you have access to a video scope that you can stick down the plug hole and get some pics of cylinders 2 and 3?

enrita · 04-04-2013, 11:39 AM

Your engine is toasted... Thats exactly what happened to me but on cyl 5.

Cripple · 04-04-2013, 12:15 PM

Where those cold or warm numbers? Regardless I think the compression ring is probably toasted. Keep us updated!

borikangel · 04-05-2013, 08:49 AM

No

Quote:

Originally Posted by GeorgiaTech335coupe

Do you have access to a video scope that you can stick down the plug hole and get some pics of cylinders 2 and 3?

borikangel · 04-05-2013, 08:49 AM

Quote:

Originally Posted by Cripple

Where those cold or warm numbers? Regardless I think the compression ring is probably toasted. Keep us updated!

Warm numbers

eric@helix · 04-05-2013, 08:55 AM

Those are unhappy compression numbers. It's probably worth doing a leak down test, but I'm afraid it will just verify the works.

ASAP · 04-05-2013, 09:46 AM

That compression is beyond bad... i had mine tested and it was between 153-158 on all 6 cylinders. You have an internal issue.

enrita · 04-05-2013, 02:18 PM

You need to start finding a second hand engine and stop using nos.

335xi Kevo · 04-06-2013, 08:09 AM

Trade the car while there's still value.

04-04-2013, 10:54 AM	#1
borikangel BIMMER 1 SERIES 5 Rep 86 Posts Drives: BMW 135i 2009 Join Date: Sep 2011 Location: PUERTO RICO iTrader: (0)	Misfire Issue & Internals Upgrade Suggestion Hi, I got BMW 135i 09/2008 with the following FBO: 1. AA Intercooler 2. Chargepipe 3. Meth with dual nozzle 4. DCI 5. Low Temperature Thermostat 6. Nitrous w/ .0027 jet 7. AR Downpipe 8. Midpipe 9. aFe Axleback w/o muffler 10. JB On december a misfire was presented in cylinder 3. I moved the injector to another cylinder, programmed and new oem spark plug so no more misfire after that. Then the last week i was running with another BMW and the misfire and lean mode came again on map 3. So I moved the ignition coil to another cylinder to discard the ignition coil but the issue came again in the same cylinder. Before the second issue on map 0 didn't have the issue. Now the check engine don't turn off in anyway at any maps and misfire on cylinder 2 and 3. I already verified the compression in all piston: Firewall 6- 150psi 5- 150psi 4- 124psi 3- 92psi 2- 94psi 1- 150psi Bumper I don't have any white or black smoke from the exhaust or oil mixed with water. I attached the injector and spark plug pictures from cylinder 3. The spark plug smell gas so i don't if the injector remain on or is dirty. So I sent all 6 injectors to http://www.injectorrx.com/ After i saw the compression I'm thinking about new internal upgrades like for example new pistons and/or cylinder head. I want too some recommendation according to my modifications or general modifications. Attached Images __________________ JB4 modded, DCI, AR DP, AA Intercooler, AA ChargePipe w/BOV, AfE Axelback, Custom Midpipe, Meth Kit.
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04-04-2013, 10:56 AM	#2
GeorgiaTech335coupe Lieutenant Colonel 76 Rep 1,883 Posts Drives: Black BMW 335i coupe Join Date: Mar 2007 Location: USA iTrader: (0)	Not to alarm you too much, but those compression numbers would have me very, very worried. You don't want to see more than a 10% variance between cylinders. __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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04-04-2013, 10:58 AM	#3
GeorgiaTech335coupe Lieutenant Colonel 76 Rep 1,883 Posts Drives: Black BMW 335i coupe Join Date: Mar 2007 Location: USA iTrader: (0)	Do you have access to a video scope that you can stick down the plug hole and get some pics of cylinders 2 and 3? __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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04-04-2013, 11:39 AM	#4
enrita Major General 159 Rep 7,378 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	Your engine is toasted... Thats exactly what happened to me but on cyl 5. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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04-04-2013, 12:15 PM	#5
Cripple Captain 102 Rep 775 Posts Drives: 12' 335is Join Date: Dec 2012 Location: Canada iTrader: (4)	Where those cold or warm numbers? Regardless I think the compression ring is probably toasted. Keep us updated!
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04-05-2013, 08:55 AM	#8
eric@helix 208 Rep 1,161 Posts Drives: 01 M Coupe, 08 135i, '12 328i Join Date: Jul 2007 Location: Philadelphia iTrader: (0)	Those are unhappy compression numbers. It's probably worth doing a leak down test, but I'm afraid it will just verify the works.
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04-05-2013, 09:46 AM	#9
ASAP Major General 10127 Rep 8,606 Posts Drives: '23 X3 M40i Join Date: Sep 2012 Location: FL iTrader: (0)	That compression is beyond bad... i had mine tested and it was between 153-158 on all 6 cylinders. You have an internal issue. __________________ 2 x N54 -> 1 x N55 -> 1 x S55-> 1 x B58
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04-05-2013, 02:18 PM	#10
enrita Major General 159 Rep 7,378 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	You need to start finding a second hand engine and stop using nos.
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04-06-2013, 08:09 AM	#11
335xi Kevo Lieutenant 26 Rep 497 Posts Drives: 2008 335xi Join Date: Jan 2012 Location: CT iTrader: (3)	Trade the car while there's still value. __________________ 08' 335xi 6MT Space Metallic Grey Premium, Nav, Cold weather, Sport Procede 2.5, DCI, Forge DV, PWM, Scoops, KW V1, ETS 5" FMIC, VRSF Downpipes, M3 Skirts
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