Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

noisy engine when first start


  • Please log in to reply
8 replies to this topic

#1 baja

baja

    USMB Regular

  • Members
  • PipPipPip
  • 42 posts
  • utah

Posted 27 December 2011 - 05:31 AM

this is prob ably a dumb question but i have a 03 subaru baja with 115000 mils on it it has the 2.5 under the hood and when i first fire it up it has valve chatter for the first 5min then goes away it sounds like the older car is this normal and how can i fix it should i worry about it this is the first new subie i have owned
thnx

#2 davebugs

davebugs

    I don't "friend"

  • Members
  • 3,112 posts
  • Pittsburgh suburbs (NE)

Posted 27 December 2011 - 08:48 AM

Had the timing belt been done yet?

Soemtimes the tensioner makes noise when they get old and you could be mistaking that for valve noise. Just a thought.

Don't know if the oil pump screws back out still onthose later model 2.5's but also worth checking when timing belt is done.

#3 MilesFox

MilesFox

    Catch this Fox!

  • Members
  • 10,611 posts
  • Madison/Milwaukee, WI

Posted 27 December 2011 - 12:12 PM

maybe you have piston slap. sounds more likely than valve rattle. This is considered mostly normal on these engines, and it goes away once the piston skirts heat up and expand to tolerance.

#4 baja

baja

    USMB Regular

  • Members
  • PipPipPip
  • 42 posts
  • utah

Posted 27 December 2011 - 03:51 PM

well the timing belt hasnt been done yet ive been slacking so i guess i better get on it thnx guys

#5 davebugs

davebugs

    I don't "friend"

  • Members
  • 3,112 posts
  • Pittsburgh suburbs (NE)

Posted 27 December 2011 - 03:57 PM

Get the idler kit. Most of us use theimportexperts.com and get a new tensioner(the tensioner basically costs the same as all the idlers).

It could be piston slap as has been pointed out but usually it takes a while longer to get quiet on the cars I've seen with piston slap.

#6 jboymechanic

jboymechanic

    Subaru Fanatic!

  • Members
  • 420 posts
  • Waterford, WI

Posted 27 December 2011 - 04:25 PM

What oil are you using? Many of us use a thicker viscosity than the factory recommendation to quiet the engines down and extend life.

#7 Ricearu

Ricearu

    Official De-Ricer!

  • Members
  • 1,214 posts
  • DFW, TX

Posted 27 December 2011 - 05:24 PM

make sure you do that timing belt. it's interference and will trash the valves if the belt breaks. also, like someone else said, replace the idlers and tensioner too. Also, subaru recommends a valve adjustment at 105k with the belts, which is shims so take it to a SUBARU specific shop or dealer only. They don't have "adjusters" built in. :-\

#8 the3rsss

the3rsss

    USMB is life!

  • Members
  • 203 posts
  • vineland

Posted 27 December 2011 - 10:57 PM

If you plan on keeping it, now is the time for major service. The timing belt should be replaced as well as all of the pulleys. The cam seals should be replaced while the pulleys are off. The oil pump ring should be replaced. Also a weak tensioner will cause a knock like noise at start up. Look for wear marks on the plastic cam covers, a sure sign of a sloppy belt.piston slap is worst in colder weather. Usually goes away in ten min or so. I use a dino oil half 5w30 half 10w30. Quiets mine down.

#9 baja

baja

    USMB Regular

  • Members
  • PipPipPip
  • 42 posts
  • utah

Posted 28 December 2011 - 03:54 AM

i used 10w40 on my last oil change and i also used about a half of quart of lucase oil treatment i us it in my gl so i figured y not how much would that full service at the dealer be anyone know and thnxs for all the info i plan on keeping the car
although there is an 05 turbo 5speed forsale that is tempting me but it has 85000 miles on it and is on its second motor so i think its been beat:banana:




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users