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Doug
Doug, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 6899
Experience:  Mitsubishi employed and Factory trained ASE certified technician
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I have a 2001 Montero the motor is making a loud ticking

Customer Question

I have a 2001 Montero the motor is making a loud ticking noise, it calms down at 2100 rpm but once below that it comes backs it has 143,000 and the timing belt was changed at 105,000 tech stated that they could not figure out what was making the noise another stated it sound like it was what they called a rist pin going bad the engine has lots of power and oil pressure is good.
Submitted: 1 year ago.
Category: Mitsubishi
Expert:  Doug replied 1 year ago.
Hi,
Lifters are definitely most common to be noisy on these. Wrist pins are not typical to get quiet with increased RPM either.
Do you have access to a stethoscope (or very long screw driver you can hold to your ear) to listen at the valve covers as well as at the oil pan to see which is the source of the tick?
Customer: replied 1 year ago.
i have a stethoscope I could listen with do the are the lifters in that motor adjustable if that is the problem
Expert:  Doug replied 1 year ago.
The lifters are not adjustable on this engine, they are automatic only unfortunately. I do have something to try if the sound is from up top though.
Customer: replied 1 year ago.
What is the something to try to see if the sound is coming from the top
Customer: replied 1 year ago.
are you still there
Expert:  Doug replied 1 year ago.
If the sound is from the top, please do the following:
Warm the engine to full operating temperature.
Slowly rev the engine from idle up to 3000 RPM over the course of 15 seconds.
Drop the engine straight to idle and let it idle for 15 seconds.
Repeat those two steps 30-40 times, then see if the noise changes... either it goes away or now is quiet at a lower RPM than before, etc.
Customer: replied 1 year ago.
Ok
Expert:  Doug replied 1 year ago.
Let me know the behavior and we'll regroup.
Customer: replied 1 year ago.
I have to leave on a emergency run I have to finish tomorrow thanks
Expert:  Doug replied 1 year ago.
No problem, take care of what you need to. I will be in tomorrow or this weekend if necessary.
No need to reply to this tonight.

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