Hi
According to the Bongo specialist they did a continuity test and the leads checked out fine.
He was adamant the leads were fine, but you could be right.
Will see how it goes. Did check the price of leads and they seem really expensive compared to most cars !
Yes , the rev counter did move with the hesitation, not lots but enough to indicate something.
Nick & Family
New Bongo Hesitation When Driving V6
Moderators: Doone, westonwarrior
-
Delboymel
Re: New Bongo Hesitation When Driving V6
I have actually seen ignition leads being made, and they were all given a 'flash test' where high voltage was passed through them to check they were properly connected and insulated.
A continuity test only shows that one end of a wire is conducting electricity to the other.
In no way does it replicate what is actually happening when the leads are under load.(Nor will a resistance measurement unless the cable is very poor)
Imagine the cable as a hose, when it is under low pressure, water flows from one end to the other and it looks ok- this is similar to the continuity test.
However, the hose needs to carry high pressure (voltage for an ignition cable), and once the pressure is increased it starts to leak.
This is what is happening, you will only notice the misfire when you need the highest voltage at the spark plugs (i.e. under load),and the electricity is leaking out so they don't spark properly and you lose power.
Using the hose analogy, it could well be that the insulation on the leads has got lots of little cracks in it, so making it 'porous' to electricity, hence leaking the spark energy to ground.
If your garage doesn't know how to test ignition leads they are not competent, however I suspect they too are very aware of how expensive the leads are, and are trying to avoid paying for them.
If true, this is very disappointing, and not the sort of thing that would do their reputation any good if you understand my drift......
A continuity test only shows that one end of a wire is conducting electricity to the other.
In no way does it replicate what is actually happening when the leads are under load.(Nor will a resistance measurement unless the cable is very poor)
Imagine the cable as a hose, when it is under low pressure, water flows from one end to the other and it looks ok- this is similar to the continuity test.
However, the hose needs to carry high pressure (voltage for an ignition cable), and once the pressure is increased it starts to leak.
This is what is happening, you will only notice the misfire when you need the highest voltage at the spark plugs (i.e. under load),and the electricity is leaking out so they don't spark properly and you lose power.
Using the hose analogy, it could well be that the insulation on the leads has got lots of little cracks in it, so making it 'porous' to electricity, hence leaking the spark energy to ground.
If your garage doesn't know how to test ignition leads they are not competent, however I suspect they too are very aware of how expensive the leads are, and are trying to avoid paying for them.
If true, this is very disappointing, and not the sort of thing that would do their reputation any good if you understand my drift......
When asked about Western Civilisation, Ghandi said 'that would be a good idea'...
-
Delboymel
Re: New Bongo Hesitation When Driving V6
Hi
You are right about their reputation, as they are a Bongo Specialist, next door to a rather large Bongo dealer.
I dont think the price would have worried them as the dealer was paying.
If it continues I will ask them to put on a set of new leads.
Nick & Family
You are right about their reputation, as they are a Bongo Specialist, next door to a rather large Bongo dealer.
I dont think the price would have worried them as the dealer was paying.
If it continues I will ask them to put on a set of new leads.
Nick & Family