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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 04-21-2017, 03:35 AM
wkahora wkahora is offline
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Misfiring

What could be wrong here.
I start my vehicle several times (say 5) so that it can crank up and all along I must be pressing the fuel pedal. As it tries to hold up ,it gives out pop sounds from the air filter compartment. I have changed the following
1. Spark plugs
2. Camshaft sensor
3. Battery
4. Checked the starter
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  #2  
Old 04-21-2017, 11:28 AM
lourias lourias is offline
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Have you tested the coil packs?


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Old 04-21-2017, 11:35 AM
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Quote:
Originally Posted by lourias View Post
Have you tested the coil packs?


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This.
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Old 04-22-2017, 11:30 AM
wkahora wkahora is offline
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How is this connected with my problem.just enlighten me here

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Old 04-22-2017, 01:43 PM
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Originally Posted by wkahora View Post
How is this connected with my problem.just enlighten me here

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"Coil-On-Plug System"= The coil pack delivers a specific amount of current to each plug. If one or more coils are not up to full strength, you will get a misfire.
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Old 04-24-2017, 09:34 AM
eusef eusef is offline
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These guys claim it is a result of "carbonization on the hydraulic lifters"

http://mywikimotors.com/m54b30/#Problems


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Old 04-24-2017, 10:28 AM
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These guys claim it is a result of "carbonization on the hydraulic lifters"

http://mywikimotors.com/m54b30/#Problems


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Whoever wrote that crap must have been drinking heavily beforehand ! If you read further into it, you`ll see that they blame just about everything on "carbonization", and their advice is "just replace all those parts (piston rings, lifters, etc.) with new."
Yeah, RIGHT !
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Old 04-24-2017, 10:36 AM
eusef eusef is offline
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Quote:
Originally Posted by Fast Bob View Post
Whoever wrote that crap must have been drinking heavily beforehand ! If you read further into it, you`ll see that they blame just about everything on "carbonization", and their advice is "just replace all those parts (piston rings, lifters, etc.) with new."

Yeah, RIGHT !


lol polarizing eh!?

Crap gas is pretty strong problem for these cars. And if you look at the DFI engines the intakes are crammed full of carbon build up. It's why I'd stay clear till manufacturers can figure out a better solution.


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Old 04-24-2017, 12:16 PM
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lol polarizing eh!?

Crap gas is pretty strong problem for these cars. And if you look at the DFI engines the intakes are crammed full of carbon build up. It's why I'd stay clear till manufacturers can figure out a better solution.


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As ALWAYS, the best solution to avoiding carbon buildup is under your right foot !

In the owner`s manual of my first BMW (1976 530i), in addition to explaining how to perform all the basic maintenance on the vehicle (they actually expected you to work on your own car....what a concept ), owners were advised to "take the car out on the highway, and run it at 4000 to 5000 RPMs for several miles" on a weekly basis.
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Old 04-24-2017, 07:43 PM
zapped77 zapped77 is offline
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I have noticed not one person on any of these forums have a clue. ya go change all the coils most chiles will run for 400,00 miles and carbon build up ya OK.

check the timing its not that hard to figure out it either runs or not
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Old 04-24-2017, 09:11 PM
eusef eusef is offline
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I have noticed not one person on any of these forums have a clue.
lol eloquent in its brevity.
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Old 04-24-2017, 09:36 PM
Old Scout Old Scout is offline
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believe he said pop noise in the airbox.........not just a misfire.
time . . . to . . . check . . . . timing! quickly . . .
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Old 05-24-2017, 11:44 AM
a.mejia a.mejia is offline
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change the coils, either do all 6 or start out by changing the ones that already have the misfire
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