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Bought a cheap timing light from Harbor Freight and it threw my readings off by 6 degrees on a Cummins ISX
After chasing a power loss for two weeks that cost me $400 in parts, I finally borrowed a Snap-On light from a buddy and found the timing was actually perfect the whole time, has anyone else run into accuracy problems with budget timing lights?
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grant.margaret19d ago
Had a buddy with an old Ford 7.3 swear his Harbor Freight light was acting up on him too. He replaced a perfectly good crank sensor because of it.
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quinn_fox19d ago
Ha, yeah I used to think those cheap lights were fine too. But @grant.margaret your story about the crank sensor really got me thinking. I had a similar thing with a no-name LED shop light I picked up, it kept flickering and I swore it was messing with my truck's idle. Finally tossed it and grabbed a name brand one, and that fixed everything. Makes you wonder how many parts get swapped for no reason because of a crappy light lol.
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