[Titi0701]

Hello everyone, I have a 2011 335is and I’ve been having a bad belt tensioner problem for weeks and just got the chance to install Fcp Euros Acessory Drive Belt kit and their Billet Crankshaft Seal Guard to have the peace of mind. After the installation I took it on a test drive to make sure I did everything correctly, and after the car got up to temp I started to hear a ticking noise coming from the engine bay. I may think that the crankshaft guard seal is the issue but I have yet to tear everything down again. Has anyone had a similar issue with their Crankshaft guard and/or belt tensioner? I’ve added a video of the noise I am hearing. YT:N54 Ticking Noise after repair

[Podunk]

Originally Posted by Titi0701

Hello everyone, I have a 2011 335is and I’ve been having a bad belt tensioner problem for weeks and just got the chance to install Fcp Euros Acessory Drive Belt kit and their Billet Crankshaft Seal Guard to have the peace of mind. After the installation I took it on a test drive to make sure I did everything correctly, and after the car got up to temp I started to hear a ticking noise coming from the engine bay. I may think that the crankshaft guard seal is the issue but I have yet to tear everything down again. Has anyone had a similar issue with their Crankshaft guard and/or belt tensioner? I’ve added a video of the noise I am hearing. YT:N54 Ticking Noise after repair

see attachment, when you went over the belt area, sounded like an idler to me. and i believe it may be this one.


if you have a stethoscope, you can take the bolt cap off and place the end on the bolt and see if the noise is generated from this pulley, a really long screwdriver or extension works too, you can move it around to other components and see if maybe an accessory components is failing as well.

Either way harbor freight has cheap stethoscopes.

[Titi0701]

So I just went back and took out my harmonic balancer to get a look at the crank seal guard I installed. The noise was coming from the guard not being properly seated yet. I was either sent a faulty product or the guard I bought was no good since Fcp euro claimed there wouldn’t be any break in period and it would sit flush upon install. I took the guard off, torqued the crankshaft seal bolts, harmonic balancer,and all the pulleys down to spec then test drove the car. The sound has yet to come back!

[Podunk]

Originally Posted by Titi0701

So I just went back and took out my harmonic balancer to get a look at the crank seal guard I installed. The noise was coming from the guard not being properly seated yet. I was either sent a faulty product or the guard I bought was no good since Fcp euro claimed there wouldn’t be any break in period and it would sit flush upon install. I took the guard off, torqued the crankshaft seal bolts, harmonic balancer,and all the pulleys down to spec then test drove the car. The sound has yet to come back!

Glad you figured it out, i used the turner seal guard from ECS tuning.