Hi, all.

I could only do the 1st Cylinder, hence the "mess-up"sorry. Three readings: 230, 210 and 210. Sounds about right.

Now the mess up part. I used this crappy pressure gauge with the "adaptor", which gets inserted in the same thread as the spark plugs. Big mistake! Cuz' when I was done with it, it was PIA to "thread" it back out! While I was struggling to get it out, my neighbor's 3 year old somehow got a hold of the spark plug and dropped it right back on the ground . Guess it was just a tad too hot for himj/k:LOL. Needless to say, the spark-end of the plug was destroyed on impact. And now I'm running $3 Bosch plug on that cylinder

Sooo...here are my questions:

1. Is the plug being replaced supposed to be: NGK PFR7G11S ? At least, this is what I see on my destroyed plug and yes I did the plug change at the dealership.

Mejestic Honda's part store, for instance, had two plugs for S2000: one is aforementioned plug WITHOUT the "S" designation at the end of the part number? The other, a DENSO one. Can anyone confirm?

2. According to the scan of the SB (thanks to Chazmo), the torque spec for the plugs themselves were 20 lb-ft and all other mounting bolts, 18 lb-ft. Do I need to absolutely make sure I torque them to this spec or would manually "torquing the hell out of it" surfice? I obviously did the later, and now I'm wondering if I over-torqued it, possibly messing up the threads ?

3. I did the plug change back in 8/02. Would this be a good time to replace the whole set of 4 or just replace the one that's destroyed?

4. During the test, I accidently attemped to crank the engine while the 3 other spark plugs were still "wired", what does this to the engine?

5. Just out of curiosity, is having one cyinder with a plug of different brand a "problem?"...aside from the warrenty issue in case the dealer finds out?



Please excuse my lengthy questions. Any help would be greatly appreciated.

 

I'm not sure why I'm responding. I guess I feel sorry for you.

First. Use a check list. Check it twice before next move.
Second. Get a full set of plugs from Honda. Don't mismatch your parts.
Third. Don't use crappy tools.
Forth. Just snug the adapter in. Lets hope the threads on number one are fine.
Fifth. Do I need to absolutely make sure I torque them to this spec YES or would manually "torquing the hell out of it" surfice? NO I obviously did the later, and now I'm wondering if I over-torqued it, possibly messing up the threads? It's possible. Lets hope not.
Sixth. During the test, I accidentally attempted to crank the engine while the 3 other spark plugs were still "wired", what does this to the engine? Cause the cylinders to fire. Did the engine start? If you use a checklist, this would not happen. You should be fine.

I could go on and on about the things you did wrong, but I'll leave it for the checklist. It's your friend .

 

Please say you disabled the fuel injection before you did the test.

The motor should crank but not fire when doing a compression test.

I feel sorry for your car more than I do for you - next time make sure you have someone watching over your shoulder who has the required experience. Working on your own car is awesome - just make sure you can handle the task at hand.

 

I give you a for atleast attempting it on your own.

bryan