335i feels slower after replacing plugs

kaede · 07-01-2013, 04:51 AM

Quote:

Originally Posted by Bavarian Black

You do know the OEM Bosch SP for the N54 have a specific reanch to tighten them in place...if they are not correctly positioned, u will get a lot of codes, low spool and loss of combustion. I don't think the Jb4 has anything to do with it.

BB

Hi, i dont know since I didn't do the job myself. But I am guessing the shop that i got the job Don at knows because they do service quite a handful of bmw's as well. I'll be taking it back tuesday (statuary holiday Monday in canada) to have them recheck the whole ignition system. Thanks!!!

j1gilles · 07-01-2013, 06:16 PM

Quote:

Originally Posted by Bavarian Black

You do know the OEM Bosch SP for the N54 have a specific reanch to tighten them in place...if they are not correctly positioned, u will get a lot of codes, low spool and loss of combustion. I don't think the Jb4 has anything to do with it.

BB

The "wrench" you are talking about is just a trorque wrench...

rismo · 07-01-2013, 06:21 PM

Nothing to do with adaption... never reset adaption without specific reason! And know how to drive the car after a adapation reset! (Easy for 100miles!!) Your car adaption does a lot of things and this should never been done under wot.

Engine light -> check the work of the shop... big change they made an error with re-attaching stuff or you are unlucky and run into something else...

About the torque, just make sure they are fixed but not overtight them.. a torque wrench is ideal but plugs can be done without (to my experience).

kaede · 07-02-2013, 12:43 PM

Quote:

Originally Posted by rismo

Nothing to do with adaption... never reset adaption without specific reason! And know how to drive the car after a adapation reset! (Easy for 100miles!!) Your car adaption does a lot of things and this should never been done under wot.

Engine light -> check the work of the shop... big change they made an error with re-attaching stuff or you are unlucky and run into something else...

About the torque, just make sure they are fixed but not overtight them.. a torque wrench is ideal but plugs can be done without (to my experience).

xD I dont know how to reset adaption anyways, so wont be doing that =D I have booked appointment with the shop to have them recheck the whole ignition system to see if they can fix it. Thanks guys! Will update in regards to what happens!!

az335iat · 07-02-2013, 02:23 PM

Do yourself and everyone else a favor and do a log.

Everything else is just a wild ass guess.

Bavarian Black · 07-03-2013, 01:38 PM

Quote:

Originally Posted by j1gilles

The "wrench" you are talking about is just a trorque wrench...

Pardon the typo. Yes, but it is a specific TR for the N54. Or, BMW lied to me lol.

georgelb · 07-03-2013, 02:14 PM

Quote:

Originally Posted by Bavarian Black

Pardon the typo. Yes, but it is a specific TR for the N54. Or, BMW lied to me lol.

You don't need a special torque wrench; you just need a thin walled socket to get down in there.

Bavarian Black · 07-03-2013, 02:51 PM

Quote:

Originally Posted by georgelb

You don't need a special torque wrench; you just need a thin walled socket to get down in there.

... thin...sounds like what they told me. Cheers

Jeff@TopGearSolutions · 07-03-2013, 03:44 PM

I could see why the OP is confused.

To the thread starter:

The first thing you need to do pull any check engine light codes and find out what the car says is wrong.

Since the spark plugs were recently changed I would check to make sure they are the correct part number, gapped correctly, and tightened correctly.

One of the above is likely your issue, wrong plug, wrong gapping, or not tight enough.

If anything else was touched during installation that could also be the culprit. A special thin walled socket is needed for spark plugs and not many people have one handy unless they've worked on this car before or have an extensive tool set at their disposal.

Bavarian Black · 07-03-2013, 05:38 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

I could see why the OP is confused.

To the thread starter:

The first thing you need to do pull any check engine light codes and find out what the car says is wrong.

Since the spark plugs were recently changed I would check to make sure they are the correct part number, gapped correctly, and tightened correctly.

One of the above is likely your issue, wrong plug, wrong gapping, or not tight enough.

If anything else was touched during installation that could also be the culprit. A special thin walled socket is needed for spark plugs and not many people have one handy unless they've worked on this car before or have an extensive tool set at their disposal.

+1

07-01-2013, 06:21 PM	#25
rismo Captain 79 Rep 911 Posts Drives: BMW E92 335 Join Date: Jul 2008 Location: Europe iTrader: (0)	Nothing to do with adaption... never reset adaption without specific reason! And know how to drive the car after a adapation reset! (Easy for 100miles!!) Your car adaption does a lot of things and this should never been done under wot. Engine light -> check the work of the shop... big change they made an error with re-attaching stuff or you are unlucky and run into something else... About the torque, just make sure they are fixed but not overtight them.. a torque wrench is ideal but plugs can be done without (to my experience). __________________ BMW 335 E92 09 - Full options - DKG - MHD by Buraq - RB Next Gen - RB Inlets/Outlet - Forge Diverter Valves - AR Catless DP - Afe Intake - Helix IC - FuelIT Stage 2 LPFP - Ar Oil Cooler - PPK Water Cooler - M3 Suspension - JRZ RS1 Shocks - Eibach Pro Springs - Drexler LSD - BMW IS Exhaust - Carbon Endurance Brake Pads - Stainless Steel Brake Lines - M101 Wheels - Michelin PS2 - M-Tech Body - M-Strutbar BMW M550i G30 2019 - BM3
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07-02-2013, 02:23 PM	#27
az335iat Boost For Fun 0 Rep 32 Posts Drives: 2009 335i Coupe AT Join Date: Feb 2009 Location: Phoenix, AZ iTrader: (0)	Do yourself and everyone else a favor and do a log. Everything else is just a wild ass guess. __________________ 09 335i Coupe JB4 G5, Meth, DCI 08 335i Sedan 12.035 at 118.14 1.92 60 foot JB4 Meth CM5, M10 Nitto NT05R on K1's, SOLD.
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07-03-2013, 03:44 PM	#31
Jeff@TopGearSolutions 3455 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	I could see why the OP is confused. To the thread starter: The first thing you need to do pull any check engine light codes and find out what the car says is wrong. Since the spark plugs were recently changed I would check to make sure they are the correct part number, gapped correctly, and tightened correctly. One of the above is likely your issue, wrong plug, wrong gapping, or not tight enough. If anything else was touched during installation that could also be the culprit. A special thin walled socket is needed for spark plugs and not many people have one handy unless they've worked on this car before or have an extensive tool set at their disposal.
	Appreciate 0 Quote