My engine is running realy rough when i give it a few revs.
I checked the spark plugs and all four were badly corroded.
The coill packs are supposed to have an o-ring seal to prevent water getting to the top of the plugs. They were all missing on my engine. This allowed rain water to get in, probably when the engine was taken out of the donor.
Some plugs had corrosion (brown water marks) about 10mm or so up the plug ceramic!!!!!.
Im surprised it actually started at all in that state.
So have ordeded new o-rings and new plugs.
Hopefully this should sort out my mis fire, and I should end up with a purring engine, fingers crossed.
I should be getting the new parts today, over the bank holiday weekend, i can then hopefully sort this out.
Might make a new video if it fixes the problems.