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-   -   HELP -- 02' 530i engine knocking (http://www.maxbimmer.com/forums/showthread.php?t=148107)

E36White 01-09-2012 01:43 PM

HELP -- 02' 530i engine knocking
 
my car started making this weird noise this morning

http://youtu.be/GUpgyo7WUgk

its from the passenger side toward the front end of the engine, around vanos/cylinder #1


before i take it to my mechanic, how safe is it to drive? i had to drive to work and back around 5km total but i made sure not to go over 50km/h or 2500rpm.

i read somewhere that it could be a loose spark plug? i got them replaced 2 weeks ago.

noodles101 01-09-2012 01:46 PM

does the knocking sound follow your RPM or no?

are u using the right engine oil for your car?

is your engine oil level good?

jmack 01-09-2012 02:21 PM

Check your plugs, although that sounds really loud to be a loose spark plug.

Is your SES light on?

E36White 01-09-2012 02:24 PM

recently after replacing the crankcase breather valve, OBC reported low engine level so i topped up with Total 5w40 just until its time to change the oil (i still have like 1k or so to go)..its fine now. As for noise, i tried to hear it while driving but i couldnt make much.

should i rev it while parked to see if the noise follows rpm?

E36White 01-09-2012 02:25 PM

no check engine light and no weird smells either...

this is the video where he had a loose plug..sounds somewhat similar: http://youtu.be/NtwwS2UBHfs

jmack 01-09-2012 02:27 PM

Did you find any oil stains in your driveway/garage at all?

Check the plugs if you can just to be sure one hasn't worked loose, it's a long shot though.

noodles101 01-09-2012 02:28 PM

i think its your lifters

Blades 01-09-2012 02:31 PM

The sound is similar to my old 330xi had which were the lifters. There isnt anything you can do about it but thats if its the lifters. This was common in the 2000-2001 E46's but I haven't heard about this in the 5 series.

E36White 01-09-2012 02:31 PM

no oil stains since i took care of all leaking culprits (valve cover gasket, oil filter housing gasket) over the past 3 months...

in its current state, you think its safe to drive to my mechanic? its a good 10-15 minute drive..

noodles101 01-09-2012 02:35 PM

yeah its safe to drive .

but make sure ur using the right weight for your engine and it is topped off.

product called 'molyslip' is really good for making your lifter sound go away.

E36White 01-09-2012 02:35 PM

Quote:

Originally Posted by Blades (Post 1543040)
The sound is similar to my old 330xi had which were the lifters. There isnt anything you can do about it but thats if its the lifters. This was common in the 2000-2001 E46's but I haven't heard about this in the 5 series.

was it okay to drive?

E36White 01-09-2012 02:39 PM

i thought sticky lifters made ticking noises not knocking though? besides, i remember when the valve cover gasket was replaced, i asked my mech if there was any sludge or if anything looked sketchy he said what he saw was pretty clean for a 10 year old car.

does this make sense?

noodles101 01-09-2012 02:43 PM

hmm
lifter sound on my 328 was... *gluck gluck gluck * kinda like knocking noise and ticking noise at the same time..lol

E36White 01-09-2012 02:52 PM

****! okay ill guess ill just wing it and drive it to my mech tomorrow morning.

thanks all for ur support...will check back in later.

E36White 01-10-2012 03:25 AM

So it WAS the spark plug...the white shell was broken at the neck due to over-torquing...replaced the plug, and she purrs now.


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