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Ticking noise at idle


Quaintbucket
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Went offroading (forest service road, nothing crazy other than the one tame mud hole) last weekend and on the way home I noticed a loud ticking noise.

 

Thought it might be my engine running low on oil so I pulled over checked it. It was OK but topped it up. Fired the engine up, sounds fine then started ticking again but only at idle.

 

I'm stumped. Yesterday, I was driving home from work and noticed it again. Thought I should try holding down my brakes while in drive and give a little gas.

 

Ticking noise stopped completely until the engine went back to idle then started like half a second later.

 

Any ideas?

 

 

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I parked at work and tried to see if I could record it but the noise stopped. Looks like it is intermittent! Makes my life so much easier...

 

I did notice this when I was driving: when it's in drive, it will make the ticking/knocking noise but when I put it in neutral or park, the noise stops.

 

Confused!

 

 

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I will check exhaust leak either way. I'm thinking valve issue as well and it is intermittent.

 

Goes away when the car is moving as well. Only when idle.

 

 

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Edited by Quaintbucket
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could be injector noise. Mine had that, I ran a bottle of Gummout through it and it's quiet now.

though I do hear a ticking sound at idle when I'm getting close to my oil change interval. I figure it's low oil pressure and i'm hearing the lifters. new oil and it goes away.

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I would be leaning toward a lifter, or injector, as stated above usually if you have an exhaust tick it dont go away at different rpm.

i had an a lifter tick when i first started in the morning, and sometimes at idle for years and years, when i finally got down that far, there was a clogged hole in the guide plate that limited the oil to the number 6 lifter. /shrug there are my 37 cents "inflation" on it.

 

par

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Find out where the tick is coming from using a stethiscope, that is how I found my engine noise. I found a knock/tick in my lower end through the oil pan, I took the oil pan off and low and behold the rod bearings for #5 & #6 cylinder had a little play up and down so I just replaced all the rod and main bearings.

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