I changed my plugs and plug wires recently because my car was smoking (black smoke) when at high rpms (BTW, the car still smokes at high rpm). I am pretty sure these are the plugs from the factory. 133k miles.

How do they look?

 

umm bad. um what kinda car motor ect give some info please. if its vtec thats prob y it smokes. it could just b running rich. oil smoke is blue , coolant is white and i believe black is carbon and fuel . i could be wrong

 

Motor is a stock b16a2. 133k miles. I showed a mechanic friend of mine and he said they looked pretty good for 133k miles. My car still makes black smoke at high rpms.

 

do you have a catalytic converter on the car still?

 

looks too hot.

I bet you have your dissy cranked all the way advanced huh.

running lean, or have a manifold vac leak. possibly the wrong heat range plug too.

 

how could they be the stock plugs? Honda uses NGK from the factory and those are Denso.

you can see that the plug on the left is black at the tip which means its running richer in that cylinder. All the rest of them have white tips.

 

they are all lean, the one on the left is just less lean. its not black or any sign of being rich.

 

wtf do u mean lean? thats not lean. its supposed to burn like that... the one of the left is richer than the rest.

 

i believe lean means rich! and is it really supposed to burn diff in one of 4 cylinders? i think not , all 4 should b the same unless there is a prob..and stock plug yes r in fact ngk's,

 

also the gap on the plugs should all read the same

 

also look at the silver on the left plug its not silver. looks like someone replaced the right 3 and not the one on the left. why else would it b so dirty and not shinny silver like the other 3 ( the parts not inside the motor ) something isnt right with this

 

no it just looks like the Motor is running richer in that cylinder. Possibly due to a faulty fuel injector or dirty fuel injectors that arent all flowing the same.

 

lol, getting a little angry. sorry budd, learn to read plugs.
little transfer, starting to melt the electrodes.
hard with pictures but that is lean, regardless of what the angry guys thinks.

 

ur not getting it. look at the whole plug like even where the socket fits on the SILVER is diff. color than the rest has nothing to do with inside the motor. now that makes me believe he needs new o rings in the valve cover

 

Jesus man, dont run stock plugs for 133k miles! I replace mine every 60k miles at least.

 

i replace mine yearly

 

a set of 4 ngk plugs are only 25$ on amazon, this thread isnt even needed. i'd just buy sparkplugs for the hell of it

 

ya ur right. its possible that they only replaced 3(wtf) or his valve cover seal was leaking in that cyl.

 

my thoughts exactly, honda uses ngk for sure but they actually list both ngk and denso in the owners manual but I always run ngk's cause denso's are pretty much crap.

 

What is the best thing to do to clean the fuel injectors? Any certain product? How about one of those gas additives?

How can I determne if the dizzy is turned to too advanced? I don't have a timing light.

 

dam i replace my plugs ever couple months lol well if i have the car that long usually different honda every month hahaha lmao

 

Techron is the best for cleaning the fuel system. Go pick some up at your local autoparts store and fill up with Chevron at the same time (if Chevron is available around you)