Having problems with acceleration.

[wildBill83]

That's bad info. Oil will not get past your spark plug and into the cylinder.

Oil will fill the plug wells and that can cause a misfire. The oil conducts the current to the valve cover.

[johnl]

That's bad info. Oil will not get past your spark plug and into the cylinder.

Correct.

Oil will fill the plug wells and that can cause a misfire. The oil conducts the current to the valve cover.

Incorrect. Oil in the 'wells' prevents electrical conduction. I've seen spark plug 'wells' filled to the top with oil and still no misfiring. Oil is a poor electrical conductor and a good electrical insulator (as is any organic compound). Electrical transformers are often oil filled to prevent internal arcing.

[wildBill83]

Old oil can contain enough metal particles to be conductive.

[johnl]

Old oil can contain enough metal particles to be conductive.

Maybe , but I'd be surprised if that is the case, or at least likely to be the case with engine oil that there would be enough metallic particles in the oil to have a significant conductive affect (and they would have to form a more or less contiguous pathway through the oil...?). I could be wrong.

On the other hand, carbon molecule contamination could possibly increase the oils' conductivity enough to 'divert' the current. I think there is far more likelihood of there being a lot more carbon in old dirty oil than there is of substantial quantities of suspended metal particles being there. Just how carbon contaminated the oil would have to be to conduct spark voltage to earth (conductive enough that the contaminated oil became an easier path to earth than the plug gap) I don't really know, but my guess would be 'very'.

In any case, I've seen spark pugs operating perfectly well submerged in a sea of old black dirty oil. Of course everything is a conductor, it's just a matter of how good or poor a conductor it is.

[CB7Austin]

Just had this with mine but, it was the muffler, it was so clogged the exhaust couldn't come out and it was like a limiter on my RPM's replaced with a oem muffler and it fixed the problem for now...

[johnl]

Just had this with mine but, it was the muffler, it was so clogged the exhaust couldn't come out and it was like a limiter on my RPM's replaced with a oem muffler and it fixed the problem for now...

Clogged with what? If it's carbon and or oily crap (and not just the internals of the muffler collapsing) then it's likely a symptom of another problem.

[marneus901]

Maybe , but I'd be surprised if that is the case, or at least likely to be the case with engine oil that there would be enough metallic particles in the oil to have a significant conductive affect (and they would have to form a more or less contiguous pathway through the oil...?). I could be wrong.

On the other hand, carbon molecule contamination could possibly increase the oils' conductivity enough to 'divert' the current. I think there is far more likelihood of there being a lot more carbon in old dirty oil than there is of substantial quantities of suspended metal particles being there. Just how carbon contaminated the oil would have to be to conduct spark voltage to earth (conductive enough that the contaminated oil became an easier path to earth than the plug gap) I don't really know, but my guess would be 'very'.

In any case, I've seen spark pugs operating perfectly well submerged in a sea of old black dirty oil. Of course everything is a conductor, it's just a matter of how good or poor a conductor it is.

However if the terminal or ground strap on a worn spark plug is nearly gone (assuming most people don't follow proper maintenance scheduling) then the spark is very weak from the get-go; then factor in oil. And yes, in some engines, oil can get to the spark plug. Hence why misfires happen; I have fixed multiple multiple customers cars with this simple fix - that is if there is not something more major going on.