Question about Volvo Cars & Trucks
What is the compression spescts on a volvo V70 b5244s na engine
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Posted on Jan 02, 2017
SOURCE: How do I change the
If you have changed the spark plugs and you still have a misfire then I agree, the next logical step is to replace the leads. Before you go to the expense of buying a full set, you should be able to identify which individual lead / leads are causing you the problem. Firstly remove all covers so that you can see the leads clearly, now wait until after dark or if you have a dark garage. (the darker the better) Lift the bonnet and start the car. This is better if you have someone in the car who can rev it up whilst you look under the bonnet. If you have a faulty lead, then as the engine is reved up you will see a blue spark jumping from your lead to the engine block, this could range from a very bright to a vary faint spark, that is why it is better to do this in the darkest place possible. This spark means that the lead insulation has broken down and the current is going to earth and not your spark plug. You need to inspect your leads very thoroughly along their entire length, taking care not to touch them or you will receive a nasty electric shock. If you find that your leads are in good condition, you could have a crack in your distributor cap. This would give the same syptoms.
Posted on Mar 30, 2011
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