A kind of metallic ring/tick sounds
Asked by kingsley Oct 13, 2018 at 06:57 PM about the 2004 Mitsubishi Outlander LS
Question type: Maintenance & Repair
Greetings everyone,
Please in need urgent help on my favorite truck (04 Mitsubishi Outlander). I
decided on one occasion to use a mid grade gas (89) on my truck as a result
of hike in gas prices and after a few days i started to hear a kind of metallic
sound once the engine is warmed up or on a load/uphill. i have used several
gamut octane boasters/injector cleaners with the hope of stopping the
sound. As it turns out unfortunately, the sound is still there. I would
appreciate any assistance in this matter.
Best regards
5 Answers
Sounds like pre ignition or detonation which can cause serious engine damage. It may be carbon buildup on the piston head and combustion chamber or it could be caused by incorrect ignition timing or an EGR valve problem or even incorrect spark plug heat range selection. How many miles on this Outlander?
Thanks sir for your response. The Outlander has 186,573 miles. As part of trying to figure out what the issue was, I replaced all the spark plugs, air filters, and still the sound persists. Please kindly direct me on where the EGR valve is located and if it can be cleaned out or replaced. Also, I was thinking of doing a back flush but since there was no overheating issue I decided to let that be. I am going to clean for carbon deposits and see what happens next. Thanks again for your apt response. I am still open to anymore suggestions/solutions.
Greetings all, I have been able to clean the carbon deposits as well found and cleaned the EGR valve consecutively. On doing a test drive the sound is still there. Can someone kindly help me out on how to fix pre ignition detonation.
Running premium is probably cheaper than using all those additives which cost around $0.50 a gallon to use. Make sure your spark plugs look OK. You could try running ones with a cooler heat range. This may or may not help.
Greetings kind contributors, I am humbled by your input in my quest to fix this metallic sound. As part of research online I found this write up online “heater core and I need a coolant back flush. Now having said that, there is a small possibility that you have air in your coolant system and the coolant is cavitating in the heater core area as it flows through. Coolant flows quicker as the engine rpm increases as the water pump turns faster. You may want to flush the coolant, if is close to being required or, bleed it real good”. With respect to the above quoted I’d like to ask if this can be the cause of the noise as I have done everything you have advised? Still thanking the community for your contributions. Best regards
