Hpfp or coil?

Down_Shift · 03-03-2013, 08:42 AM

Just pulled home and gave the car a quick tap on the gas.

Got a code for p29d2 and cylinder 5 misfire. Pulled aside. Turned off car. Turned back on. Code went away and car drive normal again. Didn't want to gamble and try to floor it again.

Deciding if I should bring it to the dealer and have the pump covered. If its not covered I'd be paying them for a coil I could have done.

enrita · 03-03-2013, 08:49 AM

http://www.e90post.com/forums/showthread.php?t=631829

Down_Shift · 03-03-2013, 09:04 AM

Quote:

Originally Posted by enrita

http://www.e90post.com/forums/showthread.php?t=631829

Great. Thanks. I'm on the app so I don't see stickys! Will try swapping coils today.

Jeff@TopGearSolutions · 03-03-2013, 10:12 PM

Yes, try swapping coils.

IF you are tuned have have over 25K miles on your sparkplugs they could be the problem too.

AS the spark plugs get some mileage the gap increases.

A cheap fix is re-gapping the plugs to spec. Spark Plug Gap BMW 335i .04 If I recall correctly.

Down_Shift · 03-04-2013, 02:33 AM

Quote:

Originally Posted by Jeff@TopGearSolutions

Yes, try swapping coils.

IF you are tuned have have over 25K miles on your sparkplugs they could be the problem too.

AS the spark plugs get some mileage the gap increases.

A cheap fix is re-gapping the plugs to spec. Spark Plug Gap BMW 335i .04 If I recall correctly.

this.

Just got tuned with FBO. Car had plugs done 30k ago...
ran great first few days.. starting last night, the car was giving some hesitation before building boost. Then this morning the whole misfire when I floor it. Started it up and drove it earlier and no more CEL's.. but still have the hesitiation. Ordering bosch plugs now and will swap the 5th coil pack to another cylinder while I'm at it.

Transport3r · 03-04-2013, 08:07 AM

Quote:

Originally Posted by Down_Shift

this.

Just got tuned with FBO. Car had plugs done 30k ago...
ran great first few days.. starting last night, the car was giving some hesitation before building boost. Then this morning the whole misfire when I floor it. Started it up and drove it earlier and no more CEL's.. but still have the hesitiation. Ordering bosch plugs now and will swap the 5th coil pack to another cylinder while I'm at it.

swap it with 1 or 2 as they are less likely to misfire. sounds like you were due for plugs though so thats probably it. Doesn't hurt to swap 2 coils while you're in there though.

Good luck!

03-03-2013, 08:42 AM	#1
Down_Shift Captain 196 Rep 739 Posts Drives: Slay Join Date: Jan 2011 Location: Beantown iTrader: (4)	Hpfp or coil? Just pulled home and gave the car a quick tap on the gas. Got a code for p29d2 and cylinder 5 misfire. Pulled aside. Turned off car. Turned back on. Code went away and car drive normal again. Didn't want to gamble and try to floor it again. Deciding if I should bring it to the dealer and have the pump covered. If its not covered I'd be paying them for a coil I could have done.
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03-03-2013, 08:49 AM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	http://www.e90post.com/forums/showthread.php?t=631829 __________________ 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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03-03-2013, 10:12 PM	#4
Jeff@TopGearSolutions 3474 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Yes, try swapping coils. IF you are tuned have have over 25K miles on your sparkplugs they could be the problem too. AS the spark plugs get some mileage the gap increases. A cheap fix is re-gapping the plugs to spec. Spark Plug Gap BMW 335i .04 If I recall correctly.
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