how to fix if Engine has a ticking noise. on 2003 GMC Sierra 1500 HD

While engine is running there is a ticking noise comming from the lifter.

by in Fort Worth, TX on June 29, 2010
2 answers
ANSWER by on June 29, 2010
Next oil change try using Mobil 1 synthetic because the same thing happened in my sons Trans Am we were using Valvoline 10w-40 and we had one lifter sticking then we switched to Mobil1 10W-30 and that solved it and its available at Walmart in 5 quart jugs
ANSWER by on August 27, 2010
If you have upgraded this vehicle then you might need to run a higher octane fuel to solve the problem

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