baja Posted December 27, 2011 Share Posted December 27, 2011 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 Quote Link to comment Share on other sites More sharing options...
davebugs Posted December 27, 2011 Share Posted December 27, 2011 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. Quote Link to comment Share on other sites More sharing options...
MilesFox Posted December 27, 2011 Share Posted December 27, 2011 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. Quote Link to comment Share on other sites More sharing options...
baja Posted December 27, 2011 Author Share Posted December 27, 2011 well the timing belt hasnt been done yet ive been slacking so i guess i better get on it thnx guys Quote Link to comment Share on other sites More sharing options...
davebugs Posted December 27, 2011 Share Posted December 27, 2011 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. Quote Link to comment Share on other sites More sharing options...
jboymechanic Posted December 27, 2011 Share Posted December 27, 2011 What oil are you using? Many of us use a thicker viscosity than the factory recommendation to quiet the engines down and extend life. Quote Link to comment Share on other sites More sharing options...
Ricearu Posted December 27, 2011 Share Posted December 27, 2011 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. :-\ Quote Link to comment Share on other sites More sharing options...
the3rsss Posted December 28, 2011 Share Posted December 28, 2011 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. Quote Link to comment Share on other sites More sharing options...
baja Posted December 28, 2011 Author Share Posted December 28, 2011 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: Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.