Can a bad Spark Plug Cause the Rest of the Plugs Fowl out?
#1
![Question](https://ls1tech.com/forums/images/icons/icon5.gif)
If say you got one plug with the Tab over the electrode is burned away ,can it cause the rest of the plugs to Carbon Foul?Like throwing the engine off Kilter?
I have always thought if one cylinder wasnt fireing right would effect the ramaining cylinders.....Thanks
I have always thought if one cylinder wasnt fireing right would effect the ramaining cylinders.....Thanks
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
My guess is that the one cylinder went dead. So, that cylinder was pumping unburnt air into the exhaust system, giving the computer indication of a lean condition. The computer then richens up everything in an attempt to get back to stoichiometric. This causes the other 7 cylinder to run overly rich and fould the plugs.
#4
![Thumbs up](https://ls1tech.com/forums/images/icons/icon14.gif)
Originally Posted by engineermike
My guess is that the one cylinder went dead. So, that cylinder was pumping unburnt air into the exhaust system, giving the computer indication of a lean condition. The computer then richens up everything in an attempt to get back to stoichiometric. This causes the other 7 cylinder to run overly rich and fould the plugs.
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by LSXNV
it would show the dead cylinder as a rich condition with the un-burned fuel.
I've run engines rich enough so that you start mis-firing cylinders, but it actually indicates lean on the WBO2 due to the un-burnt O2 in the exhaust.