Mazda MX-6 Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
97 Posts
Discussion Starter #1
my 626 2.2 turbo has a ratteling noise from under the rocker cover
i it sounds like the rocker arms could do with adjusting
what are the tolourances ???
ect
as i dont have a service manual
thanks
 

·
Registered
Joined
·
666 Posts
Wow, this is the most asked question I think ever.
Read on.
You don't adjust tolerances, these engines use hydraulic lash adjusters, which automatically adjust themselves. The oil passages in the rocker arms get clogged with sludge, and no oil gets to the HLA's, therefore they tick. A rattle may be something else though. Anyway, I've had decent luck with an engine flush, other people suggest an additive like Marvel Mystery Oil, or Rislone. The best thing, but, most expensive, would be to replace all the HLA's, but, they're like $25 a piece from the dealer, and it takes 12 of them.
 

·
Registered
Joined
·
75 Posts
BTW, no one knows this, but marvel mystery oil is just automatic tranny fluid. HA Hahaha!
 

·
Premium Member
Joined
·
3,962 Posts
Smash said:
BTW, no one knows this, but marvel mystery oil is just automatic tranny fluid. HA Hahaha!
Nope, it's MUCH thinner than ATF. I'm sure it's chemically similar though.
 
1 - 5 of 5 Posts
Top