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About Robertabf

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  1. Well, I am not an expert or anything close, but I was told not to touch the tips of the Delco Iridium plugs as attempting to gap them would ruin them. I just changed mine at 103,000 and to be honest I couldn't tell any difference, so those plugs are awesome.
  2. 2005 Tahoe with 87k here - lately am hearing a clunky sort of tapping noise under rear seat. Sometimes the noise will appear with just the key on and sometimes not - so it isnt consistent but you dont need to be moving to hear it. I know the fuel pump is under there but thought they whined when going bad. Never had any problems - really love this truck and would appreciate any advice... Thanks!
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