Engine Noise Problem

The noise sounds like an engine knock when I start it in the mornings but after it runs for some minutes, it regularizes itself and work normally. The first time I noticed it, I thought probably the Oil Pump did not circulate oil but when I discovered that at times, the noise doesn't come up. I am beginning to wonder that something could be wrong that needs urgent attention and that if it not fixed on time, it could destroy the engine totally. I discussed it with my mechanic but he said if only I could leave it with him overnight but my job did not allow me to do so.

My 2000 is doing the same thing. Did you figure anything out???

I had a similar problem. My mechanic couldnt locate the source of the noise ,and said he would have to remove all the pulleys then he might have a clue! But when I was at inspection station,the other mechanic pointed to timing belt hitting its cover and he was right. Anyway that noise is gone now but my montero 2000 has not been fixed - after replacing timing belt and tension piston - engine is acting up .First - timing was off 2 notches, second time I had to take it in again - after 2 days I havent heard from mechanic yet.

Thank you! I will look in to this!

I'm having the same problem with my 2000 also. Did you find out what it was?

Not yet. Going to the shop this week. I will keep you posted.

my mistubishi montero sport ticks at right vaule cover how do i fix this problem

My sons 2002 Montero Sport needed new o2 sensors which cost him over $400 at Firestone. After haveing them put in Firestone told him to drive it for a while so they could heat up and break in. So with in the next two days he took a little trip. He hadn't gon far until he started hearing a knock then everything broke loose. Now my son doesn't drive hard and he hadn't put 20 miles since he had the o2 sensors put in but the engine was knocking so bad it can't be driven. Ticking can be lifters but knocking is bad. Does anyong know if o2 sensors can screw up an engine by making it over heat or anything else? Thanks. David

So... a rattle/knock that disappears at higher rpm is more than likely the tensioner on the timing belt. I replaced all of the hydraulic lash adjusters on the rocker arms and although 4 were completely broken, the noise persisted. We sent it to a mechanic who replaced the belt and tensioner and this thing is now quieter than a sewing machine.