Disco 1 Another V8 won't start

sueg · Jun 28, 2019

Shippers said:
We all had to start at the beginning...a digital multi meter is cheap and easy to use...advise on here if needed...
just for clarification have you actually checked for a spark at the plugs I know you say there's no supply at coil even after a supply from battery which is odd... things don't seem to add up..

Typical of my car! Yes checked again today for spark as was hoping that new amp may have solved it but it hasn't

Shippers · Jun 28, 2019

sueg said:
Typical of my car! Yes checked again today for spark as was hoping that new amp may have solved it but it hasn't

How are you checking for spark?...

sueg · Jun 28, 2019

Today was only the king lead into the block but been tested on plugs by two RAC guys and the mechanic before today

marjon · Jun 28, 2019

sueg said:
Today was only the king lead into the block but been tested on plugs by two RAC guys and the mechanic before today

Fine but!!

Which ones if either gave a spark, sorry

J

Shippers · Jun 28, 2019

Just to clarify...to check for a spark you remove a plug lead fit a spare plug to it then ground it to a place on the engine with a known negative return to battery and when cranking see if there is a spark...is that how you did it?...

sueg · Jun 29, 2019

Shippers said:
Just to clarify...to check for a spark you remove a plug lead fit a spare plug to it then ground it to a place on the engine with a known negative return to battery and when cranking see if there is a spark...is that how you did it?...

No. I was told to take king lead off distributor and hold near to the block to test spark from there

kermit_rr · Jun 29, 2019

sueg said:
No. I was told to take king lead off distributor and hold near to the block to test spark from there

That's a valid test to see if the coil is working

Colthebrummie · Jun 29, 2019

Sounds to me like the coil has packed up.

Col

dieseldog69 · Jun 29, 2019

Colthebrummie said:
Sounds to me like the coil has packed up.

Col

Thus far it hasn't yet been confirmed that there is even 12v power going to the coil when the ignition is on.

My money is on the 2:30 at Ascot.

Newinnwoodman · Jun 29, 2019

Lol , think that’s a safer bet lol

sueg · Jun 29, 2019

dieseldog69 said:
Thus far it hasn't yet been confirmed that there is even 12v power going to the coil when the ignition is on.

My money is on the 2:30 at Ascot.

When last tried I believe no power to the coil.

Shippers · Jun 29, 2019

sueg said:
When last tried I believe no power to the coil.

When you say tried what do you mean?...I've already said you need to get a meter on it with ignition on to find out of its got a supply...

sueg · Jun 29, 2019

Shippers said:
When you say tried what do you mean?...I've already said you need to get a meter on it with ignition on to find out of its got a supply...

Yes tried as in mechanic with multi metre

Shippers · Jun 29, 2019

Now I'm confused (not unusal for me...lol)...but you said you tested coil by pulling king lead and grounding against block why if there's no power to coil...you've got to find out why no power to coil...

dieseldog69 · Jun 29, 2019

sueg said:
When last tried I believe no power to the coil.

Bingo.

Power up the flux capacitor, I'm going in Jim

Shippers · Jun 29, 2019

dieseldog69 said:
Bingo.

Power up the flux capacitor, I'm going in Jim

Beam me up Scotty...

Shippers · Jun 29, 2019

@dieseldog69 ...if you can crank car and have fuel at injectors then run a supply from battery to coil and make sure a good earth on ignition side it should fire?...

dieseldog69 · Jun 29, 2019

Shippers said:
@dieseldog69 ...if you can crank car and have fuel at injectors then run a supply from battery to coil and make sure a good earth on ignition side it should fire?...

Yes.

+&- to coil = spark so long as coil not duff and king lead is in good order.

Shippers · Jun 29, 2019

dieseldog69 said:
Yes.

+&- to coil = spark so long as coil not duff and king lead is in good order.

@sueg you need to give us more info on what your mechanic has tested and how!...it's not adding up...sorry to say...engine cranks yes...fuel pump supplys fuel yes?...no power to coil you say ..so what does your mechanic think is the problem...he's a professional he should know...

sueg · Jun 30, 2019

Shippers said:
Now I'm confused (not unusal for me...lol)...but you said you tested coil by pulling king lead and grounding against block why if there's no power to coil...you've got to find out why no power to coil...

Yes I agree but can't track down the fault

Disco 1 Another V8 won't start

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