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PERFECT Timing IS A BALANCING Act
| 题名： | PERFECT Timing IS A BALANCING Act |
| 正文语种： | eng |
| 作者： | BRIAN CULOTTA |
| 作者单位： | Dave's Auto Care in Willoughby Ohio |
| 摘要： | What an emotional moment for a tech- nician. We've all been in these shoes before: We're near the finish line, but we realize that there are two possible outcomes ahead of us. Either we cross that finish line with our arms up in the air and everything is perfect, or it's not and we trip on that pothole we didn't see. The latter can be the most frightening thing for a tech after a lengthy repair. We remembered everything, right? It's go time! We've built up the courage. We've pumped ourselves up and now we're 100 percent confident everything is going to be just fine. (Who am I kidding?) OK, truth be told, we are not so sure. Anyway, it's time to finally rip the Band-Aid off and deal with what lies ahead. The offending suspect today, a 2003 Ford Explorer with a 4.0L SOHC (single overhead cam) engine, is an older vehicle, but it had an interesting outcome. The customer's concern was that there was a thumping noise heard under any driving conditions. Right away as diagnostic technicians, our minds jump to conclusions and we're assuming there is a suspension/tire noise. But first, we need to duplicate the customer's concern (test drive time!) My co-worker, Dennis, gets in the vehicle to begin his diagnosis. Right away, a loud tapping sound is heard under the hood of the vehicle. It's loud and it doesn't sound very good. The vehicle is brought into the bay to pinpoint this noise. Without a doubt, there is a mechanical engine tapping noise coming from the driver's side valvetrain area. We suspect a crankcase ventilation baffle (in the valve cover) has broken loose and is resting/tapping on the camshaft. |
| 出版年： | 2022 |
| 期刊名称： | Motor age |
| 卷： | 141 |
| 期： | 6 |
| 页码： | 26,28,30,34 |
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