What spark plug to use?
10-07-2019, 08:22 PM
#21
New plugs arrived gaped at about 0.034
The truck has 150,000 miles on it and those original plugs now had a gap in the 0.045 range or above.
I changed out the 6 plugs with only one minor problem with getting them out. Since the rubber boots covering the plugs did not want to release very easily, it was necessary to pry out the igniter/rubber boot combo with a tool. On one plug, I neglected to pry the rubber, but pried the thin plastic flange above. It is the thin circular surface that is immediately below the electrical connector of the igniter. This was a mistake that I was careful not to repeat. A small half moon section broke off from the circumference, but not enough to affect the functioning of the ignitorl or it's housing. I super glued the edge back on and added a pinch of epoxy for good measure. It was not worth buying a new $50 ignition coil. Everything is working great and I saved $700.
Conclusion.....Dealer estimate of $800 to change the plugs was a real ripoff.
The truck has 150,000 miles on it and those original plugs now had a gap in the 0.045 range or above.
I changed out the 6 plugs with only one minor problem with getting them out. Since the rubber boots covering the plugs did not want to release very easily, it was necessary to pry out the igniter/rubber boot combo with a tool. On one plug, I neglected to pry the rubber, but pried the thin plastic flange above. It is the thin circular surface that is immediately below the electrical connector of the igniter. This was a mistake that I was careful not to repeat. A small half moon section broke off from the circumference, but not enough to affect the functioning of the ignitorl or it's housing. I super glued the edge back on and added a pinch of epoxy for good measure. It was not worth buying a new $50 ignition coil. Everything is working great and I saved $700.
Conclusion.....Dealer estimate of $800 to change the plugs was a real ripoff.
Last edited by gknoerlein; 10-07-2019 at 08:25 PM. Reason: clarification
