E70 N62 Rocker Arm Fallen

e70jane · 08-19-2018, 12:33 AM

Been chasing a hesitation problem for the past 6 months. Multiple CAN faults and cel are present. Stealership replaced negative battery cable and ibs but no difference. Searched all over for a short but couldn't find any. Replaced alternator, pointless. Checked Vanos, all working. Replaced driver side Valvetronic actuator due to fluctuating ohms value on multimeter, wasn't the problem. Finally, what I hoped not to perform, replace eccentric shaft sensors. So today I removed the driver side valve cover and removed eccentric sensor. Nothing unusual, connector and beneath the square metal plate was free of oil. However, I discovered a fallen rocker arm. Now I'm quite confident that all along, this was the culprit! Now, how bad of a job would it be to reinstall the rocker piece?

e70jane · 08-22-2018, 10:42 PM

This is the part that fell off and was bouncing around inside the valve cover.

Is the AGA tool a must to put this part back in place?

heatmizr · 08-24-2018, 09:33 AM

Wow!! Had no idea these could just fall off!
Following...

GMWNashville · 08-26-2018, 01:28 AM

You can put them back in you just need to turn the motor over to a point where the cam puts as little tension as you can on that rocker and use a pick. It's a pain in the ass and you need to be careful but it can be done. Interesting that it tossed one out on its own though-I've only seen that happen during reassembly for repairs that they come out...

e70jane · 09-25-2018, 02:14 PM

Quote:

Originally Posted by GMWNashville

You can put them back in you just need to turn the motor over to a point where the cam puts as little tension as you can on that rocker and use a pick. It's a pain in the ass and you need to be careful but it can be done. Interesting that it tossed one out on its own though-I've only seen that happen during reassembly for repairs that they come out...

I already put it back on but before I start it up, I will first change the oil from 10w40 (euro formula) back to 5w30. I'm wondering if the thicker oil was the cause for the lash adjuster to freeze up, hence the rocker arm falling off. I inspected the spring and all looks fine, nothing broken. I'm also hoping and praying to god it's not a bent valve. Any case, wish me luck..

heatmizr · 09-25-2018, 03:21 PM

Doubtful that the oil caused it, how much difference can there be between those two similar spec oils?

gentooguy · 08-13-2019, 03:06 PM

I apparently have the same issue with my E70 N62 X5. I am getting a constant misfire on cylinder 8. My valvetronic's motor spring snapped prior to the constant misfire and I had to replace. Aligned with ISTA and thought everything was fine. Still misfire on cylinder 8. Took off valve cover and found these parts bouncing around in the top of the engine near cylinder 8. Changed the oil and found a couple of the smaller parts in the old oil. Guessing they fell down the oil drain ports. Still haven't attempted to fix this yet debating what to do. Was thinking to replace the broken rocker arm tow lever and then drop the oil pan to make sure there is no leftover metal pieces. Hopefully that will solve. Please help.

You can see in the photo once of the ears broke off the rocker arm tow lever.

gentooguy · 10-30-2020, 11:06 AM

I got the intermediate lever can these be placed back in without taking apart the top valvetronic part of the engine?

08-19-2018, 12:33 AM	#1
e70jane New Member 0 Rep 11 Posts Drives: bmw e70 Join Date: Aug 2017 Location: Denver, Colorado iTrader: (0)	E70 N62 Rocker Arm Fallen Been chasing a hesitation problem for the past 6 months. Multiple CAN faults and cel are present. Stealership replaced negative battery cable and ibs but no difference. Searched all over for a short but couldn't find any. Replaced alternator, pointless. Checked Vanos, all working. Replaced driver side Valvetronic actuator due to fluctuating ohms value on multimeter, wasn't the problem. Finally, what I hoped not to perform, replace eccentric shaft sensors. So today I removed the driver side valve cover and removed eccentric sensor. Nothing unusual, connector and beneath the square metal plate was free of oil. However, I discovered a fallen rocker arm. Now I'm quite confident that all along, this was the culprit! Now, how bad of a job would it be to reinstall the rocker piece?
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08-22-2018, 10:42 PM	#2
e70jane New Member 0 Rep 11 Posts Drives: bmw e70 Join Date: Aug 2017 Location: Denver, Colorado iTrader: (0)	This is the part that fell off and was bouncing around inside the valve cover. Is the AGA tool a must to put this part back in place?
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08-24-2018, 09:33 AM	#3
heatmizr Captain 153 Rep 709 Posts Drives: E70 X5 50i M-Sport Join Date: Feb 2015 Location: Charlotte, NC iTrader: (0)	Wow!! Had no idea these could just fall off! Following... __________________ heatmizr [Todd] g26 i4 e40 - Clean Machine e70 X5 50i M-Sport "The Boss" Loaded e90 328i - sold e36 M3 - Gone to become a track star Last edited by heatmizr; 08-24-2018 at 12:05 PM..
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08-26-2018, 01:28 AM	#4
GMWNashville Colonel 172 Rep 2,373 Posts Drives: 19 G05, 16 F80, 10 E70x5D Join Date: Jan 2008 Location: Nashville, TN iTrader: (2)	You can put them back in you just need to turn the motor over to a point where the cam puts as little tension as you can on that rocker and use a pick. It's a pain in the ass and you need to be careful but it can be done. Interesting that it tossed one out on its own though-I've only seen that happen during reassembly for repairs that they come out...
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09-25-2018, 03:21 PM	#6
heatmizr Captain 153 Rep 709 Posts Drives: E70 X5 50i M-Sport Join Date: Feb 2015 Location: Charlotte, NC iTrader: (0)	Doubtful that the oil caused it, how much difference can there be between those two similar spec oils? __________________ heatmizr [Todd] g26 i4 e40 - Clean Machine e70 X5 50i M-Sport "The Boss" Loaded e90 328i - sold e36 M3 - Gone to become a track star
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08-13-2019, 03:06 PM	#7
gentooguy Private 17 Rep 65 Posts Drives: 2007 BMW 335i Alpine White Join Date: Sep 2007 Location: VA iTrader: (0)	I apparently have the same issue with my E70 N62 X5. I am getting a constant misfire on cylinder 8. My valvetronic's motor spring snapped prior to the constant misfire and I had to replace. Aligned with ISTA and thought everything was fine. Still misfire on cylinder 8. Took off valve cover and found these parts bouncing around in the top of the engine near cylinder 8. Changed the oil and found a couple of the smaller parts in the old oil. Guessing they fell down the oil drain ports. Still haven't attempted to fix this yet debating what to do. Was thinking to replace the broken rocker arm tow lever and then drop the oil pan to make sure there is no leftover metal pieces. Hopefully that will solve. Please help. You can see in the photo once of the ears broke off the rocker arm tow lever.
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10-30-2020, 11:06 AM	#8
gentooguy Private 17 Rep 65 Posts Drives: 2007 BMW 335i Alpine White Join Date: Sep 2007 Location: VA iTrader: (0)	I got the intermediate lever can these be placed back in without taking apart the top valvetronic part of the engine?
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