subwayasian

Hey guys, for some reason my car needs a valve adjustment every 6 months or so. After getting a valve adjustment, the engine runs very strong and doesn't bog. But after around 6 months, the car bogs and has a noticeable loss of power, also when I step on the gas, there is a 1-2 second of very weak power and then goes. The engine seems to shake the car more than usual, even on idle.

Could this be a bent valve? anything else?

HUNTERANGEL121

https://www.s2ki.com/s2000/topic/106...ners-dbw-cars/

I'm assuming you've seen this?
In those 6 months, how much do you drive?

subwayasian

oh wow very interesting. definitely going to go with bills specs.

but my issue is that my valve timing starts to get thrown off even 3 months into my new valve adjustment...

HUNTERANGEL121

Isn't there a locking nut? I fear I'm not much help.

subwayasian

mhmm there is for each valve. i made sure they are all tight before i put everything back. and its the same deal even when my friend from evasive did it and from another shop as well. its not even a years time before i have to do another adjustment... im seriously thinking of saving up for a head rebuild...

subwayasian

but that link you provided me is very interesting.....

subwayasian

oh sorry and my S is my daily driver so at least 10k a year but no more than 15 for sure.

HUNTERANGEL121

Then I'm out of ideas... Hopefully someone can chime in...

windhund116

You sure that you are adjusting the valves with the engine stone cold?

subwayasian

yes always over night.