Weak spark? - How to test the resistance of a HT lead
Автор: Andy Mechanic
Загружено: 2016-04-03
Просмотров: 18579
Another of the new 'Basic Skills' family of short videos. Ignition misfires are often caused by defective HT leads. These leads have to transmit in excess of 100,000v on a modern car's high tension circuit, whereas on older cars the spark voltage was a much lower 40,000v. The higher the voltage the better the insulating properties the HT leads need to have to prevent the higher voltage leaking to ground which will result in a misfire for that cylinder.
Here's a short video showing you how to test the resistance of a HT lead and I have included some resistance specifications for the different types of HT leads available...
These 'Basic Skills' videos are NOT meant to be a decisive, all encompassing, training video on teaching you all the various aspects of professional skills, no, not in the slightest!
Its a short video showing the basics giving you a starting point on how its done, the tools you need and a few tips along the way...
Any questions then please leave them in the comments section below and I'll do my best to get back to you asap...
Andy Mechanic!
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