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BMW N46 Engine Vanos noise

Cam chain noise on start up and deceleration. Have changed over solenoids and problem remains on inlet side. Could it be seals on cam or is it the vanos pulley?

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Posted on Jan 02, 2017

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SOURCE: 2000 bmw 540i noise in front of engine

if it's rattle kind of noise , possible cause :VANOS or chain guide.
There many other causes , the noise must be heared
by mechanic , to identify the source.

Posted on Apr 22, 2010

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1 Answer

Exhaust cam position actuator location?


I ASSUME that this has the 2.4L ecotech 4 cylinder engine?? If so the vct solenoids (variable cam timing) are mounted between the intake and exhaust cams through holes in the valve cover near the timing chain end of the engine (front). The exhaust vct solenoid will be on the exhaust side of the cylinder head.

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I just changed my oil in my 98 ford explorer and now i can hear a ticking sound coming for the passager side of the truck what could it be?


I asked because I had a suspension this was a 4.0 SOHC, have you had the recall done addresses the noise, it is caused inmost cases by leaking hydraulic cam chain automatic tensioners, they were recalled back in late 98, it is a free repair if it hasn't been done already. they are easy to change out. To find out if you need the recall visit your Ford dealer and have them run your VIN. I would also never use anything but the recommended oil. I double checked and your truck requires 5W-30W oil (not 5W-20W, my mistake), in this engine due to the way the hydraulic cam chain tensioners work I would not use 10W-30W, the thicker oil can cause slack in the cam chains and cause you the noise you discribed. I am 99% sure you have noise from a slack timing chain based on my 20 years at the Ford dealer.

Oct 28, 2011 | 1998 Ford Explorer

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2008 toyota highlander cam actuators


sounds like a dealer trick--sounds like timing chain is bad--dont turnit over no more u mite hurt valves--get away from that place and go to an honest independent to remove the cover and inspect chain--water pump and front seal are in same area-checkum out too

Oct 23, 2011 | 2008 Toyota Highlander

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I am timing a 2005 Cadillac STS 4.6 northstar went by gm info and re timed 3 times with bad results. I had all my marks lined up but I think I am messing up with the flats on the cams where do they need to...


the crank has to be on tdc for the piston position
on the right hand bank ( left side looking at the front of the engine , the top most cam is the inlet cam and the letters RI will be at the 9 oclock position on the top side of the shaft boss on the cam gear the lower cam gear will have the letters re in the same position
on the other bank the top cam gear will have li at the 3 oclock position and the lower cam gear will have re in the same position
use the position as 90 degrees to the head and taken through the cam shaft center

May 14, 2017 | Cadillac STS Cars & Trucks

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Is the front engine seal related to the time chain tensioner seal got a link behide the timeing belt


Don't quiet understand your question...but here's some insight.

The chain is under the valve cover/s ( 1.8t and some 2.8 V6.) and drives 2 or 4 cam shafts.

If it is the VR6 engine then the chain is in the front of the engine.

1.8t has seals on at cam sensor at rear of head and seals at front for crank and cam. To install it needs belt removed for front seals. 2.0 gas engine same except no rear cam seals.

All oil seals are now Teflon and a new instal procedure must be followed. Briefly : Installed dry...allowed to sit 4 hours before engine started.

Post again if this does not answer your question. We need year and model to give you a definitive answer.

Jan 12, 2011 | 2002 Volkswagen Passat

1 Answer

Very bad rattle noise in top of a 4.0 overhead cam .gas engine but sounds like a diesel !


Sounds like a bad timing chain probably in the passenger side rear of the head. If it the one in the front on the other side that one is not too bad but if its the one in the back on the passenger side its a big job. (have to pull the engine out of the Explorer) Its the chain that runs the cam. The guides go bad and make it rattle like a son of a gun but will still seem to run okay. Stop running it, if the chain jumps your engine is shot. At the point you are at it only needs a chain and new guides. Hope this helps good luck. If you have any more questions feel free to ask. I just did a rear chain in a 1999 overhead cam a week ago and not too many people know much about changing them or timing them.

Nov 20, 2010 | 1998 Ford Explorer

1 Answer

Head gasket got bent and I have replaced it . Now the problem I'm facing is how to set the crank shaft and the comshaft timing. I need the procedure for engine timing


Timing Chain & Gears Removal & Installation To Remove:
NOTE: Keep the cam chain away from magnetic fields.
Crankshaft set at TDC marks hnda_trk_crv_crank_tdc_marks.gif

  1. Turn the crankshaft pulley so its Top Dead Center (TDC) mark (1) lines up with the pointer (2).
  2. Raise and support the vehicle.
  3. Remove the front tires/wheels. Front undercar splash shield hnda_trk_crv_frt_under_splsh_shld.gif

  4. Remove the front undercar splash shield.
  5. Remove the drive belt.
  6. Remove the cylinder head cover (See section on Valve Cover).
  7. Remove the crankshaft pulley (See section on Crankshaft Damper). CKP sensor and VTC solenoid electrical connectors hnda_trk_crv_ckp_vtc_ele_conn.gif

  8. Disconnect the Crankshaft Position (CKP) sensor connector (1) and Variable Valve Timing Control (VTC) oil control solenoid valve connector (2).
  9. Remove the VTC oil control solenoid valve (See section on VTC Solenoid Valve).
  10. Support the engine with a jack and wood block under the oil pan. Ground cable and upper bracket removal hnda_trk_crv_grnd_cbl_uppr_brckt_rem.gif

  11. Remove the ground cable (1), and remove the upper bracket (2). Side engine mount bracket removal hnda_trk_crv_side_eng_mount_brckt_rem.gif

  12. Remove the side engine mount bracket. Timing chain cover removal hnda_trk_crv_timng_chain_cov_rem.gif

  13. Remove the timing chain cover bolts both from the front to the block and from the bottom to the oil pan.
  14. Remove the timing chain cover.
  15. Loosely install the crankshaft pulley. Compress the timing chain auto-tensioner hnda_trk_crv_compr_tim_chain_auto_tensnr.gif

  16. Turn the crankshaft counterclockwise to compress the auto-tensioner. Lock the timing chain auto-tensioner hnda_trk_crv_lock_tim_chain_auto_tensnr.gif

  17. Align the holes on the lock (1) and the auto tensioner (2), and then insert a 0.06 inch (1.5 mm) diameter pin (3) into the holes.
  18. Turn the crankshaft clockwise to secure the pin. Removal of the timing chain auto-tensioner hnda_trk_crv_rem_tim_chain_auto_tensnr.gif

  19. Remove the auto-tensioner. Removal of the timing chain guide B hnda_trk_crv_rem_tim_chain_guide.gif

  20. Remove the cam chain guide B. Removal of the timing chain guide A hnda_trk_crv_rem_tim_chain_guidea.gif

  21. Remove the cam chain guide A (1) and tensioner arm (2).
  22. Remove the cam chain.
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Oct 11, 2010 | 2002 Honda CR-V

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1995 Mitsubishi L300 Van 2ltr aspirated motor, Automatic choke revs extremely high on cold start, will not decelerate till engine is hot. How can I remedy this?


If it's carburetor & has automatic choke, then there is probably a screw at side of carb, by step cam that moves with choke . Back it of a little at a time until you get desired cold idle speed. Make sure you turn step cam to setting it would normally be when cold, and choke on, then turn screw out to lower rpm's. Look for a little rod from choke shaft, down to base or side of carb area, to step cam.

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