bad ticking 90 535i

[535ibimmer]

i got a 1990 535i with 135K. the ticking is so horrible. during acceleration it sounds like a lawn mower. idling it sounds like a muscle car. what can be the problem? thanks

[gmannino]

You might need to get your valves re-adjusted.
http://bmwe34.net/e34main/maintenance/engine/valve_adjust.htm

[gale]

Exhaust manifold leaks will do that too. Check the downtubes for leaks also.

[535ibimmer]

umm i do notice that my exhaust has this popping effect. when i put my hand in front of the exhaust i would feel the air sort of popping? like a put...put..put sort of effect.

[BillionPa]

top end getting enough oil?

[gale]

umm i do notice that my exhaust has this popping effect. when i put my hand in front of the exhaust i would feel the air sort of popping? like a put...put..put sort of effect.

If there aren't any leaks, with the engine running, cover the exhaust tips with the palms of your hands (use a rag, they get hot), and you should be able to stall the engine. If there is a leak, you'll hear a whooshing sound where ever the leak(s) are.

[jjdickm]

Does it sound like it missing? might want to check your timing and you secondary.

[califblue]

I'll bet it only comes from one spot on the valve cove( use a long handled screw driver and touch the cover and listen throught plastic end)just adjust your valves down to 9thou...I'll bet you have a worn spot on you came somewhere