Hi, I'm in the UK and have a 1992 70hp johnson with a slight misfire and down on power. Checked the stator charge coil with an electrical meter as per workshop manual.
I disconnected the 5 pin plug and did the following checks;
Tested terminal A (brown lead) got a reading of 56v when cranking.
Tested terminal B (brown/yellow lead) got a reading of 76v when cranking.
Manual says voltage present here indicates that the stator/charge coil was shorted to ground. Not good.
Then checked output whilst cranking on terminals B (red meter test lead) and terminal A (black meter test lead) got 213v manual says should be minimum of 250v. So not good.
Resistance check across term A and term B shows 841 ohms which is ok.
So I bought another secondhand stator part number 584560 from a know good running engine, fitted it but misfire (very slight) remains, so i then perform the same checks as above and get more or less EXACTLY the same readings! With voltage showing down A and B terminals.
So my question is it correct / normal to see voltage down the terminals A and B ?
Any advice greatly appreciated.
I disconnected the 5 pin plug and did the following checks;
Tested terminal A (brown lead) got a reading of 56v when cranking.
Tested terminal B (brown/yellow lead) got a reading of 76v when cranking.
Manual says voltage present here indicates that the stator/charge coil was shorted to ground. Not good.
Then checked output whilst cranking on terminals B (red meter test lead) and terminal A (black meter test lead) got 213v manual says should be minimum of 250v. So not good.
Resistance check across term A and term B shows 841 ohms which is ok.
So I bought another secondhand stator part number 584560 from a know good running engine, fitted it but misfire (very slight) remains, so i then perform the same checks as above and get more or less EXACTLY the same readings! With voltage showing down A and B terminals.
So my question is it correct / normal to see voltage down the terminals A and B ?
Any advice greatly appreciated.