Why didn't I think abt that??? (leaky injector)

007_e350 · 07-10-2015, 01:16 PM

I think this's an excellent idea to test for leaking injector(s), stole it from the web lol

ferocity02 · 07-10-2015, 01:20 PM

Interesting!

I guess the rail pressure is high enough when cranking over to get them to leak.

Levanime · 07-10-2015, 01:32 PM

Quote:

stole it from the web lol

no worries, i'm author of this video

007_e350 · 07-10-2015, 01:34 PM

Quote:

Originally Posted by ferocity02

Interesting!

I guess the rail pressure is high enough when cranking over to get them to leak.

I don't think they should ever leak without electric pulse, also all should leak in that case why just one

924er · 07-10-2015, 01:50 PM

Or u can pull the plug and smell it as it sits overnight

Levanime · 07-10-2015, 01:52 PM

other option is to disconnect all injectors, and then turn the starter,
if you listen carefully you can determine if the ignition is happening

davidwarren · 07-10-2015, 01:56 PM

OK, I'll ask the dumb question. If you are cranking the engine, why wouldn't all injectors spray?

edit- or is just the fuel line connected and not the electrical connection?

Levanime · 07-10-2015, 02:04 PM

Quote:

edit- or is just the fuel line connected and not the electrical connection?

correct, no electrical connections, so its fuel pressure from rail only

ferocity02 · 07-10-2015, 02:05 PM

Quote:

Originally Posted by davidwarren

OK, I'll ask the dumb question. If you are cranking the engine, why wouldn't all injectors spray?

edit- or is just the fuel line connected and not the electrical connection?

Fuel line is connected but not the electrical. So the video is showing the injector spaying fuel without any signal, hence leaking

KeepRidingDirty · 07-10-2015, 03:26 PM

This is genius, only it may be more difficult to pull all the injectors rather than the plugs.

007_e350 · 07-10-2015, 03:33 PM

Quote:

Originally Posted by Levanime

no worries, i'm author of this video

ooops sorry, but this is ingenious!!

007_e350 · 07-10-2015, 03:34 PM

Quote:

Originally Posted by KeepRidingDirty

This is genius, only it may be more difficult to pull all the injectors rather than the plugs.

still better than blindly replacing injectors, we've all done that right/?

KeepRidingDirty · 07-10-2015, 04:59 PM

Quote:

Originally Posted by 007_e350

still better than blindly replacing injectors, we've all done that right/?

Ooooo ya. When in doubt replace them all.....That's how you do it right?

BeastMode335i · 07-10-2015, 11:31 PM

dude this is awesome and has win written all over it.. well, because I just ordered 3 injectors and was going to "hope" i was replacing the right ones..!! This looks like a dead giveaway at what injectors will be faulty..! Thanks brother..!! :cheers:

So just unplug the electrical connectors, and push and hold the start button..??

Oo vvR3cKz oO 619 · 07-10-2015, 11:45 PM

Brilliant.. 😄

jjbmuu · 07-12-2015, 09:24 AM

Plus if you look closely it's pretty obvious that the one leaking has a much darker tip from build up as well just in case your injector may not be leaking too bad or at all during this test.

EJ_3 · 07-12-2015, 12:39 PM

Nice. Been a while since I've seen a valuable thread.

totti84 · 07-13-2015, 06:47 AM

Check this out 7smurfs

Jeff@TopGearSolutions · 07-13-2015, 09:11 AM

Quote:

Originally Posted by Levanime

no worries, i'm author of this video

Good idea, you can also see that the same injector has much more fouling on the tip.

BeastMode335i · 07-14-2015, 08:07 AM

Levanime would you mind letting me know the steps you did to get the injectors in that position? Also, did you reuse the decoupling elements from the injectors that were not replaced..??

MadeInPhilly · 07-14-2015, 12:17 PM

who has the proper procedure for this? Just unplug electrical harness and try to crank the motor?

tc535i · 07-14-2015, 12:18 PM

Quote:

Originally Posted by MadeInPhilly

who has the proper procedure for this? Just unplug electrical harness and try to crank the motor?

looks like it

07-10-2015, 01:16 PM	#1
007_e350 Lieutenant Colonel 218 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	Why didn't I think abt that??? (leaky injector) I think this's an excellent idea to test for leaking injector(s), stole it from the web lol __________________ Mods: 7" VRSF FMIC, Forge DVs, RB PCV, BMS Oil Cooler, VRSF DPs, MHD, JB4g5, OFT DIYs: Walnut blasting : Trans Oil at 45k, w Filter at 65k : Diff Oil Flush @ 45k : WP&TS @ 69k : Alternator @ 79k --- E70d Alphabet Soup del 44.4k : JR Stg2.25 tune : Buzzken Catted Exhaust : Trans fluid drain/ fill (3 Qrts), both Diffs fluids flushed Wheels: Style 95s on PSSs (Sold): AG 359s on S04s : 162s on Blizzaks : Rohana RF1 Matt black
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07-10-2015, 01:20 PM	#2
ferocity02 Colonel 538 Rep 2,084 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	Interesting! I guess the rail pressure is high enough when cranking over to get them to leak. __________________ 2013 135is DCT Carbon Black Metallic
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07-10-2015, 01:50 PM	#5
924er Colonel 352 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	Or u can pull the plug and smell it as it sits overnight __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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07-10-2015, 01:52 PM	#6
Levanime BimECU 193 Rep 759 Posts Drives: BMW Join Date: Dec 2014 Location: SD iTrader: (0) Garage List 2007 BMW 335 [0.00]	other option is to disconnect all injectors, and then turn the starter, if you listen carefully you can determine if the ignition is happening
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07-10-2015, 01:56 PM	#7
davidwarren Captain 188 Rep 670 Posts Drives: 328,325, 325, 335, X5, 640 GC Join Date: Dec 2011 Location: Louisville, ky iTrader: (0)	OK, I'll ask the dumb question. If you are cranking the engine, why wouldn't all injectors spray? edit- or is just the fuel line connected and not the electrical connection? __________________ 2010 335i e90 Le Mans Blue/Chestnut Brown \| M-Sport \| 6MT
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07-10-2015, 03:26 PM	#10
KeepRidingDirty Professional Monkey Trainer 65 Rep 423 Posts Drives: 2007 BMW 335xi Join Date: Aug 2014 Location: Ottawa, On iTrader: (1)	This is genius, only it may be more difficult to pull all the injectors rather than the plugs. __________________ JB4 G5 ISO / ER Charge Pipe and Tial BOV / Wagner FMIC / CYBA Tips & Air Scoops / AFE DCI / BMW PE Exhaust Mod / M3 Rep Bumper / Dynavin E9x
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07-10-2015, 11:31 PM	#14
BeastMode335i Maximus Decimus Meridius 1132 Rep 4,586 Posts Drives: F30 335i Join Date: Apr 2014 Location: Down South iTrader: (2)	dude this is awesome and has win written all over it.. well, because I just ordered 3 injectors and was going to "hope" i was replacing the right ones..!! This looks like a dead giveaway at what injectors will be faulty..! Thanks brother..!! :cheers: So just unplug the electrical connectors, and push and hold the start button..?? __________________ F30 335i Melbourne Red Metallic M-Sport Package Last edited by BeastMode335i; 07-10-2015 at 11:48 PM..
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07-10-2015, 11:45 PM	#15
Oo vvR3cKz oO 619 GEARS OF WAR 3 6 Rep 224 Posts Drives: N54 E93 Join Date: Sep 2013 Location: WEST COAST iTrader: (3)	Brilliant.. 😄
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07-12-2015, 09:24 AM	#16
jjbmuu 4ut0strd4 47 Rep 223 Posts Drives: 08 AW E92 335i 6 Speed Join Date: Nov 2011 Location: Florida iTrader: (0)	Plus if you look closely it's pretty obvious that the one leaking has a much darker tip from build up as well just in case your injector may not be leaking too bad or at all during this test.
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07-12-2015, 12:39 PM	#17
EJ_3 Colonel 371 Rep 2,838 Posts Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: N Las Vegas iTrader: (13) Garage List 2007 BMW 335i [8.34] 2016 Ram 1500 Sport [8.00] 1994 BMW 525i [10.00] 2007 BMW 530i [8.66]	Nice. Been a while since I've seen a valuable thread. __________________ click here for mods
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07-13-2015, 06:47 AM	#18
totti84 Major 114 Rep 1,140 Posts Drives: N54 135i 6MT Join Date: Aug 2014 Location: Sydney, Australia iTrader: (5) Garage List 2009 BMW 135i M Sport [0.00]	Check this out 7smurfs
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07-14-2015, 08:07 AM	#20
BeastMode335i Maximus Decimus Meridius 1132 Rep 4,586 Posts Drives: F30 335i Join Date: Apr 2014 Location: Down South iTrader: (2)	Levanime would you mind letting me know the steps you did to get the injectors in that position? Also, did you reuse the decoupling elements from the injectors that were not replaced..?? __________________ F30 335i Melbourne Red Metallic M-Sport Package
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07-14-2015, 12:17 PM	#21
MadeInPhilly First Lieutenant 43 Rep 301 Posts Drives: E30 318is, E90 335i, 03 GTI Join Date: Sep 2009 Location: Dallas, TX iTrader: (0)	who has the proper procedure for this? Just unplug electrical harness and try to crank the motor?
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