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05-21-2012, 08:13 AM
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#1 | |
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AF Regular
Join Date: Nov 2003
Location: Fort Thomas, Kentucky
Posts: 123
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2001 3.2 Rodeo tap on start
My 100K engine taps on start-up--most noticable in the morning after sitting overnight. Sounds like a hydraulic lifter noise and it goes away after a few minutes driving and warmed up once. Don't notice it later in the day even if it's been sitting for several hours. Not severe, but it doesn't sound right.
I use synthetic 10-30 oil and a Fram Extra Guard filter on it with about 1,500 miles since last oil change. Had the timing belt and water pump changed about 6 months ago, I noticed this tapping this noise fairly recently. Any thoughts? Sticking valve? Wrong brand of oil filter? Otherwise the engine runs smoothly and without a noticable changes. Last edited by Rmasters3; 05-21-2012 at 09:40 AM. |
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05-22-2012, 11:24 PM
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#2 | |
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AF Enthusiast
Join Date: Nov 2003
Location: Spokane, Washington
Posts: 1,947
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Re: 2001 3.2 Rodeo tap on start
This engine doesn't have hydraulic lifters. The problem could be worn cam follower shims. The noise is probably going away after oil starts washing over the cam and followers.
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99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs. 03 GMC Envoy XL SLT 4x4 5.3L V8 |
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