So I just finished a HG, timing cover, water pump and pan gasket job on my 04 disco

Its running but says there’s a misfire on 1 and 7. Spark plugs look ok and there’s not a consistent steam show coming out the tailpipe

So I’m suspecting a small HG leak still from the cooling jackets right next to cyl 1&7

All the coolant is drained (rad is also new) and there’s nothing in there but water. I’m about to put Blue Devil pour and go in to try and solve the problem

Any advice or other suggestions before I do this?

 

Yes I would pressure test coolant system to see if in fact you have a leak

 

1 and 7 are on the same coil pack you might have switched wires on the coil pack by mistake. I did that once when replacing coil packs.
Thsts why I got the relocation kit

 

I would double and triple check the coils.. It's my tradition to mix them up every time I do a HG.

 

yes they are routed correctly

also getting p1300

 

So during my double check of the plug wires, I thought 1&7 were wrong. So I swapped them and then realized I had it right the first time and put them back correctly.

cleared the codes, didn’t throw any at idle like is has been. Drove 2.5 miles around the neighborhood and felt great

Not 100% sure about coolant leaks into the oil but it is running well. Going to add antifreeze in a bit. Then I’ll keep an eye out for chocolate milk