I bought new plugs and i read that the standard size for [both]: 1.15mm-1.25mm (0.046-0.049in) for the gap, but when i checked my trailing on the new plug it was 0.030 even the old plug it was that size. could a smaller gap result to unburnt fuel?

 

If you bought the right plugs, they are gapped correctly and don't need to be adjusted. I don't trust the source you pulled that from at the moment.

 

These are the part num for the plugs RE7C-L (6700) and RE9B-T (6701)

 

Yup, you got it right. Just install, don't mess with the gapping.

 

https://www.rx8club.com/series-i-do-...e-31872/page2/

The 18th comment down is where i got the source from was that info wrong???

 

The only gap reference i can find within the first 150 posts is copy and pasted from sparkplugs.com. So my statement stands, I don't trust it.

Leave the gap where it is

 

FSM sys...

Standard Gap .046-.049in

Max gap leading .059in
Max gap trailing .055in

It also says to avoid possible damage to the tip do not adjust the plug gap