Fuel injector

Bnk91 · 02-13-2022, 01:08 PM

When taking fuel injector out.. should they be wet or dry…. I did work on car and had take them all out.. after finishing work on car. One the injector was blowing white smoke from side where go into hole.. so taken out injector and was all dry and the bottom end was black .. is this normal and just need new seal as already replace all 4 with new seal:. Need help thanks

Phil325i · 02-14-2022, 02:47 AM

On the assumption this is a piezo injector, then yes, injectors should be dry not wet. And white smoke is not normal. But black on the tip is normal as the end of the injector sits within the combustion chamber.

Bnk91 · 02-14-2022, 01:11 PM

Quote:

Originally Posted by Phil325i

On the assumption this is a piezo injector, then yes, injectors should be dry not wet. And white smoke is not normal. But black on the tip is normal as the end of the injector sits within the combustion chamber.

As smoke coming out from injector hole.. think could be copper seal on injector that leaking or maybe seal that's around rocker cover on inside .. I did take rocker cover off and put new seal and ring on them ..

02-13-2022, 01:08 PM	#1
Bnk91 New Member 2 Rep 15 Posts Drives: Bmw 3 series e90 2011 Join Date: Feb 2022 Location: Chorley iTrader: (0)	Fuel injector When taking fuel injector out.. should they be wet or dry…. I did work on car and had take them all out.. after finishing work on car. One the injector was blowing white smoke from side where go into hole.. so taken out injector and was all dry and the bottom end was black .. is this normal and just need new seal as already replace all 4 with new seal:. Need help thanks
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02-14-2022, 02:47 AM	#2
Phil325i Brigadier General 639 Rep 3,212 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	On the assumption this is a piezo injector, then yes, injectors should be dry not wet. And white smoke is not normal. But black on the tip is normal as the end of the injector sits within the combustion chamber. __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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