Echo PB - Spark issue - out of ideas.... help???

[lagriff]

Problem - no spark at plug

have tested with 3 different plugs, still no spark... (all grounded properly etc)

used an inline spark tester with adjustable gap and was able to spark across 1/4 inch gap, generated about 20,000v.

still no spark at plug...

I realize it seems like a crucial piece of info is missing and in my almost 30 years of working on small engines - if someone told me this scenario I would assume they are leaving something out - but I have been working on this issue for a few weeks now and cannot make ANY headway... has anyone ever seen this issue???

here are the specifics about the engine in case there is a known issue I am unaware of:

echo pb 403-t

 

[HerrStig]

Sounds like a fault in the plug wire.

 

[lagriff]

would that allow the inline tester to spark?

 

[HerrStig]

Originally Posted By: lagriff
would that allow the inline tester to spark?
When you move the wire to attach the tester, a break in the wire may make contact in the new position which can fool you into thinking the wire is OK. What shape in the plug connector in?

 

[HerrStig]

I think I'd just change the pizo spark generator and the wire at this point.

 

[chad8]

plug wire

 

[lagriff]

No visible signs of wear to the wire, boot or connection into the coil.... And when testing for spark (at the actual plug) - I moved it around a LOT when finding a grounding spot... Obviously I can't be sure I recreated the exact same condition as when the inline tester is present, but in the weeks I have been working this issue I would think it likely that I accidently recreated it!!!!!

The ignition coil is under a lifetime warranty - BUT you are required to have a certified echo dealer test the existing coil AND order and install the new one - and because i can get spark (at 1/4" gap with an inline tester - I am sure they will not replace the coil....

 

[lagriff]

Any idea the gauge of that wire? I am willing to try rewiring it (probably the only thing I haven't tried)