Quote:
Originally Posted by blue62
Fiddle,
I read about not doing it that way and why not years ago. Don't remember where I read it. or what possible issues could arise. But most likely possibly harmful to the computer system. So I have used a spark tester every since. Cheap insurance.
I am sure you could find reference to it on the web  |
Sorry, but this is simply not true.
Just think about it...grounding the plug is doing the exact same thing as happens in the engine block.
Maybe you read it back in the 90’s when people were still afraid of computer controlled cars?
I agree, though: get a tester. It’s much easier.