Service Repair
Diagnostics and Drivability

Snap-on EVAP Elite Smart Smoke Machine EELD500 training video

April 4, 2013

This video covers how to operate the Snap-on EELD500 SmartSmoke. The tool features portability, self-calibration and functions with OEM specific inert gases.

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Feb. 25, 2008

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Figure 1: The EPS is housed entirely in the steering column assembly on this example displayed. Although this is a typical configuration, it doesn’t mean every vehicle is configured this way.

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The broken exhaust valve spring is the cause of the driveability fault. Keep in mind that a broken spring can present intermittent faults or faults that only occur under certain operating conditions. It’s important to realize that a broken spring can still allow a perfectly passing compression test (or relative compression test) but fail a running test miserably.

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Figure 1: A correlation of the CKP sensor signal to that of the CMP sensor(s) signals can be a great way of inferring camshaft timing. Keeping in mind the limitations of the test, it only truly reflects the timing of the reluctors. If they have lost their reference from their respective shafts, the timing will not be on.

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Snap-on EVAP Elite Smart Smoke Machine EELD500 training video

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Going in the right direction with electronic power steering

Roadmap to repair

Solved: GMC Yukon with low compression

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