bigsteveokay
01-15-2010, 03:29 PM
Took 86 DX into Honda dealer to see why reduced power and keeps dying in neutral. They tell me two spark plugs are damaged and cylinder walls are scarred. Sure enough, I pulled it out of their lot to a parking lot nearby and plug 4's ground (side) electrode is bent almost to (or perhaps all the way touching- I didn't look closely enough) the center electrode. Plug 3's ceramic coating around the center electrode was busted all up and it was off to one side. Plugs one and two looked fine. Bent the center and side electrodes away from each other on 3 and 4 to drive it home. It drove poorly.
Replaced all four with brand new NGKs. Drove around the block, still died at idle, still had reduced power, like when I took it in. Revved high, no problem. When at high RPM up a hill all of the sudden it sounded bad and had noticeable lack of power.
Pulled all four plugs. Plug 4's electrode was fine, plug 3 was bent all the way to touching the center electrode. Ceramic on #3 also looked kinda dirty. Two and one are fine.
???? Ideas?
Pushed 3's side electrode over to the side so it wouldn't get pushed back down again but tried to maintain somewhat normal gap and replaced all four plugs. Drove again, still low on power, but at least all four seem to be firing...
Replaced all four with brand new NGKs. Drove around the block, still died at idle, still had reduced power, like when I took it in. Revved high, no problem. When at high RPM up a hill all of the sudden it sounded bad and had noticeable lack of power.
Pulled all four plugs. Plug 4's electrode was fine, plug 3 was bent all the way to touching the center electrode. Ceramic on #3 also looked kinda dirty. Two and one are fine.
???? Ideas?
Pushed 3's side electrode over to the side so it wouldn't get pushed back down again but tried to maintain somewhat normal gap and replaced all four plugs. Drove again, still low on power, but at least all four seem to be firing...