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Old 06-18-2007, 10:21 AM   #1
Axel1
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Ticking noise after spark plug change

I changed the spark plugs on my 1992 325i but now I'm getting a very prominent ticking noise from the engine. At idle, it's about 10 ticks a second or so and as the revs increase, so does the frequency of the ticks.

Anyone know what might be causing this and why did it start after changing to new spark plugs??

Could it be because I'm using copper plugs instead of platinum or iridium?

TIA for any help or thoughts.
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Old 06-18-2007, 10:29 AM   #2
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Dont over tighten them but make sure they are snug, I was loosing compression (making the ticking sound) because they were not tight enough. MAKE SURE YOU DONT OVER TIGHTEN THOUGH.
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Old 06-18-2007, 11:03 AM   #3
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Hmm..I tightened them pretty snug...is that the only cause you think?
I'll try to tighten them a little more I guess...I'll see if that helps.
Thanks.
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Old 06-18-2007, 12:32 PM   #4
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thats what is was for me, but there are more techinical guys on here that could help you out further, just thought I give you my 2 cents

the ticking went away right after we tightened them a little more.

Make sure u dont over tighten, bad news after that happens
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Old 06-19-2007, 09:09 AM   #5
Axel1
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Ok, I tightened my spark plugs but I still get the ticking noise...
I'm really stumped by this...any other thoughts?
I need to change my valve cover gasket. You think it might be due to bad seals?
I don't want to buy platinum spark plugs if it isn't related to copper vs. platinum (expensive test).
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Old 06-19-2007, 09:16 AM   #6
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are the coils seated properly?
even with the ticking sound do you feel power lose?

The Valve cover gasket was a known problem before the spark plugs were changed?

Any part of the motor that will make you loose compression will give you power lose and ticking sounds. (to my knowledge anyway)

could also be lifter noise which is popular on e36's

You should take it to RMP Motors ask for Rocco.

Tell him you know Nick S.

he knows these cars inside out!
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Old 06-19-2007, 11:12 AM   #7
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Yeah, I can feel some power loss.
I changed three of the 6 coils yesterday (the other 3 looked fine and tested fine for resistance).
When I changed the spark plugs, they were full of oil which is why I just bought the valve cover gasket which I will replace on the weekend. I just find it weird that the ticking noise only started occurring after I changed the plugs. Which is why I'm wondering if it might be the copper plugs themselves or something related to the fact that I took the old plugs out and put new ones in, thus possibly breaking some seals or something. I really have no idea.
As for RMP, yeah, but they're so damn far. I live in downtown Toronto so getting out there isn't the easiest. Plus the fact that I have to wait there while they checl/work on the car and the fact that I can only go on Saturdays...sigh...
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Old 06-19-2007, 11:29 AM   #8
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try putting the old ones back in if you still have them and see if the noise is still there
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Old 06-19-2007, 03:20 PM   #9
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I guess (I did keep them just in case )
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Old 06-19-2007, 03:25 PM   #10
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if you put them back in and the noise goes away, then go buy new spark plugs lol throw away the copper ones.

also, i have a dove grey arm rest that can be stained beige if your interested
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Old 06-22-2007, 10:56 AM   #11
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you end up finding the problem?
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Old 06-22-2007, 06:53 PM   #12
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also try checking the gapping on the spark plugs, dont believe what it says on the package, i was diagnosing a ticking problem for a customer just earlier this week (car would tick at higher RPM) and suggested a tune-up (not required, just suggested)

a co-worker came up to me while i was doing a tune-up on a customers car and said "oh dont worry, those always come pre-gapped" the gap spec on the car (this was not a BMW so DO NOT follow these specs) said .52 - .56, i pulled them out of the box and they were .46 (hah jokes on him, and he was licensed, i'm a 3rd year apprentice) the old plugs were .62, yes i know the difference seems miniscule to everyone else, but its very important to keep the gap within manufacture limits, and it solved his ticking problem.

hope that helps !

EDIT: for your question if it matters if it is copper,platinum, or iridium, yes it does, copper withstands less heat then platinum and irdium, while iridium can withstand the most heat. since BMW uses higher octane (because it burns hotter) i would definately recommend platinum or even spending the little bit extra to get iridium, thats what i have in mine, even older gm vans come with platinum plugs.....

Last edited by soon2b-e; 06-22-2007 at 06:59 PM.
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Old 06-22-2007, 08:40 PM   #13
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Quote:
Originally Posted by Axel1
I changed the spark plugs on my 1992 325i but now I'm getting a very prominent ticking noise from the engine. At idle, it's about 10 ticks a second or so and as the revs increase, so does the frequency of the ticks.


TIA for any help or thoughts.
Could it be that you didn't push on the wire connectors enough and the spark is arcing to the plug, that'll make a sort of ticking or snapping noise. Other than that, a bad connection anywhere along the spark plug wires will make the same noise. Are your wires new or old ? Maybe time to change them if they are more than2 or 3 years old.
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Old 06-22-2007, 09:16 PM   #14
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I had a really rough week at work and haven't had time to look into it yet. I'll be working on the car tomorrow (changing the valve cover gasket and trying to figure out this problem) so I'll update the thread tomorrow evening with my findings.

Thanks for all your help and suggestions guys!
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Old 06-22-2007, 09:27 PM   #15
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Oh and Zimzimma, how would one stain the grey arm rest into beige? Is there an easy process? I'm not very good with interior upholstery
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