recently had my 97 accord timing belt changed. then i feel appearent increase of noise when i press the pedal. what kind of problem it could be? should i go to the store to have it checked?

 

What kind of noise, like a tapping sound? If that's the case, badddd news, the timing belt could be off by a tooth, and on interference engines, that means that your valves are getting bent. If that's the case you need to take it back to the shop you had it done at ASAP and demand that they replace the valves/possibly the entire engine if the pistons were damaged. Man, for your sake I hope that's not it.

 

no problem during idle. the noise is like from the exhaust system. it also feels like that the car gets more powerful (fuel) but with increasing noise. but didn't ask the shop do anything about the exhaust and fuel system.

 

Maybe you have an exhaust leak, thus no muffler=more power. Start it up outside when it's cold, and look to see if any exhaust fumes are coming out anywhere besides the tailpipe. Is it louder coming from the engine compartment, under the car, what?

 

it is hard to say whether the sound is from engine compartment or the pipes now. will check it tomorrow. but it is appearent not like this before the belt change. the exhaust pipes may be old but how possible could it break right during the belt change? pipe B and muffler were changed 3 years ago.

 

Who knows, if they had it on a lift any number of shitty things could have happened, maybe they put the lifts in the wrong spot and it crushed the exhaust. I'm sure you'll have a better idea of what's going on after you take a closer look.

 

I had a similar sound on my 300zx and it was because the shift boot had torn letting noise from under the car get in , probably not your problem. I dont even know if accords have rubber shift boots lol.

 

If it is a vibration like riding in a helicopter it is probably because they didn't get the counterbalance shafts aligned correctly.
Take it back to the place that did the work and give them a chance to warranty their poor work, and make it right by you.

 

went to the dealship who did the timing belt change for me this morning. two mechanics checked the noise without opened the timing belt cover, and told me that the sound is from the cylinder valves plus a bad heat shield of the catalyst. they repeatly told me that the new belt is with correct timing and any mis-spacing of the valves will make those noise which may not exist with the old belt. to get rid of the sound i need to do a valves adjust servie for another $150.

are they right or just cheating me? the service advisor told me that there could be no misalignment since they use the light-on check when they do timing belt change.

the catalyst cover has been bad for a long time, and just occasionaly give some metalic vibration sound which is totally different from the sound that i hear now.

the mechanic also insisted that he didn't tougch anything inside the cylinder when doing the belt change so it is not his problem of the valves.

bad dealer or it is just not good for an old car to do a timing belt change?

 

that's pretty shitty that they aren't willing to fix your valves. I dont think anything terrible will become of it, but you might be running bad air/gas mixtures I believe.
I had my valves adjusted at one place for about 80$ so if you have a shop you like, aside from the dealership and they remain stubborn, do it. If they mess up your valve timing during the Timing belt change, they certainly should fix it though.

 

I'd get it fixed, at a shop or the dealership. It's not worth is to risk a motor that will cost at least $1000 + labor to replace if your valves and pistons decide to meet.

 

Is it possible that the timing that they made on the new belt is correct and just because the belt is new that the valves are working improperly?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chibiko &raquo;</TD></TR><TR><TD CLASS="quote">Is it possible that the timing that they made on the new belt is correct and just because the belt is new that the valves are working improperly?</TD></TR></TABLE>

it sounds possible, but i think you might just be hearing your valves tick. you can hear it more when its cold out.

and if you want to fix the heatshield, just get some big hose clamps and tighten them on there the tightest you can.

 

just returned the customer survey call and said i am not satisfied with their job. don't know what will happen next? where are those calls coming from, the dealer or honda usa?

 

with timing back in spec you may require a valve adjustment. Some F series have excessive cam journal wear that may cause a ticking noise but in your case I think the dealer is right and u need your valves adjusted. when was the last time you did that?

 

also hope that they are right and what i need to do is just a valve adjustment. last adjustment may be 80k before. not good, right?

 

I believe it is every 15K or at most every 30K on those motors......

 

I know this thread is super old, but we are having the exact same problem after a timing belt change. 2002 Honda Accord with 200k. Immediately after getting the car back, it sounds like the engine is full of marbles on acceleration. Anyone figure out what this was? Poorly adjusted belt?

 

Bring it back to the shop and inform them. At best they forgot to install a cover correctly, at worst there is something bouncing around inside with the timing belts

 

Got the car back today from the shop. The mechanic wasn't there so I couldn't ask about what they discovered. Supposedly it was just the drivers side motor mount, but I suspect they screwed up the adjustment on the new timing belt and were trying to save face. In any case, they didn't charge anything and had the car two days.
I'm still curious what the OP figured out on their car.
I hope this might help someone else with a similar problem.