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Knums
10-24-2014, 08:15 AM
I have had my 89 535i 5 speed (M30B35 swapped from a 88 735i) for a few months now and i have only run it about 6 or 7 times. I have noticed a tick coming from the back side of the valve cover that has progressively gotten worse :(. I do not know if my pumps work because only the tacometer works on my cluster and the motor fells over temp after about 5 mins of running. I did an oil change recently and havent put a mile on it since. I put a new fuel filter in, the gas that came out of the old one was nasty and old also replaced the air filter.
Also when the motor turns on there is a squeel, i loosened the alternator belt, figuring it was a loose belt but i still have a squeel.
Do i need a new timing chain? Could i have a lifter problem?
Please help.
Thanks.
Binjammin
10-24-2014, 10:06 AM
Do a valve adjustment.
zubbie
10-24-2014, 03:54 PM
What ? An M30 with a ticking valve train ?

How can that be.
BoldUlysses
10-24-2014, 03:59 PM
What ? An M30 with a ticking valve train ?

How can that be.

M50s are worse. And they can't be adjusted. :(
danielson
10-24-2014, 10:27 PM
my m50 ticks like crazy, its only one lifter too.
ross1
10-27-2014, 10:39 AM
While in there inspect the oil rail that supplies to the cam lobes, specifically the bolts as they loosen creating a loss of flow and lots of wear to the rear.
An updated bolt with lock-tite already applied is available or just use your own.
Suggest adjustment be done at the cam and on the loose side of spec.(.008 @ cam?). My experience is an M30 adjusted so the valve train is quiet will idle poorly, a little noise should be considered acceptable.
Knums
10-27-2014, 11:56 AM
While in there inspect the oil rail that supplies to the cam lobes, specifically the bolts as they loosen creating a loss of flow and lots of wear to the rear.
An updated bolt with lock-tite already applied is available or just use your own.
Suggest adjustment be done at the cam and on the loose side of spec.(.008 @ cam?). My experience is an M30 adjusted so the valve train is quiet will idle poorly, a little noise should be considered acceptable.
I was ignoring the tick for a while but it progressively got worse. So i came here for others ideas. Could this also be caused from a bad water pump? I have about 80k miles on the motor and i don't think it was ever replaced so maybe it went bad?
BoldUlysses
10-27-2014, 01:29 PM
Could be a loose spark plug or exhaust leak.

But adjust your valves first; that's cheap and easy.