.16 spark plug gap, still getting blowout. Bad coils?
#16
Newbie
Thread Starter
Why are the two plugs on the other coil (cylinders 2-3)the right color?
Afr's during boost are 11.8-12.2 till Redline assuming it's not misfiring or blowing out spark, whatever you want to call it. Cylinder compression is 195-200-203-198 from 1-4, injectors are a fresh set of fic 1800s that were cleaned, tested and flowmatched within 1%
Last edited by wisewendell; Mar 13, 2018 at 02:29 PM.
#18
Newbie
Thread Starter
#19
Evolved Member
When there is incorrect combustion due to insufficient/incorrect spark flame, deposits of the unburnt mixture can be found on the face and tip of the spark plug. When there is excessive fuel due to a faulty injector/s the plug face and tip will be "washed".
Marios
Marios
Last edited by Evo8cy; Mar 14, 2018 at 08:53 AM.
#20
Newbie
Thread Starter
And it's cylinders 1,4. It's very strange that my afr's are so far off that two spark plugs (cylinders 2 and 3)are proper color, others are improper color(1 and 4) and they happen to be on the same coil, but it's tune related.. Weird
Last edited by wisewendell; Mar 14, 2018 at 09:28 AM.
#21
Evolved Member
If it is just on the 1 and 4 cylinders or on any other but not in all 4 then obviously it is not the tune, when afr is the culprit and affects the plug it happens in all 4 cylinders.
Marios
Marios
#22
Newbie
Thread Starter
#23
Newbie
Thread Starter
I'm pretty sure it's the coil as now its starting to miss at idle. Hopefully gonna get the COP kit installed today.
Last edited by wisewendell; Mar 14, 2018 at 10:07 AM.
#25
Account Disabled
You've probably got broken ringlands and the fouling is from oil.
If a brand new plug is fitted and it doesn't fire, it'll come out looking exactly the way it came out.
However if you've broken the pistonAND it doesn't fire it'll come out covered in oil.
If it's firing, it;'ll come out covered in burnt oil.
So?
Are you going to post pics of plugs or not?
I guess that's a no?
If a brand new plug is fitted and it doesn't fire, it'll come out looking exactly the way it came out.
However if you've broken the pistonAND it doesn't fire it'll come out covered in oil.
If it's firing, it;'ll come out covered in burnt oil.
So?
Are you going to post pics of plugs or not?
I guess that's a no?
#29
Account Disabled
Your compression numbers are too high.
Broken pistons and the resulting oil usually makes the numbers go up, not down.
You're the noob asking the questions, I'm just giving the answers.
You just don't like the answers.
#30
Account Disabled