As the topic state, My cylinder one have miss fire. Sorry if i post this on the wrong place. Sorry for and spelling to, so bare with me. I bought the car in Aug of 2008, Its a 2000 s2000 with 97,000 mile. The owner told me that he just had the valve tighten from honda. The car had a CEL and he told me that it was a bad coilpack on cylinder one. when i had the car and took it to get the code check. the only thing that came up was (P0411 Secondary Air Injection System Incorrect Flow Detected) well i fixed that because the vacume line was hook up wrong. after that was fix, the car ran find for one day. and the CEL came back on. well i check again and it was three cylinder miss fire. so i put some new plug in there. Bosch planthem 4 spark plug, when i took the old one out. they were the same one. as the new one i just bought. well after the change. everything ran well until cylinder 1 was the only thing that miss fire again. so i put a new coilpack on cylinder one. still the same problem after it. so i put new spark plug again. i change over to ngk laser planthem plug and still testing if it would come back. Edit. forgot to said that the cylinder one had oil in it from the seal. but then i change the seal and the problem went away already; so no more leak.

My question is what else could be wrong?
oil was change and still new.
new spark plug.
one new coilpack on the miss fire cylinder

Need help with what else could be wrong.

The car dyno and only made 188whp and 120tq on a dynojet. the dyno seem low for my car. but the only thing good was that my dyno ran really good and didnt lose power until 8400rpm.

any help or tips would be useful

sorry for my bad grammer and thanks in advance for all the help.

 

This need to get moved to under the hood section

Oil on the plugs probably means you need a spark plug seal
The ecu could be an issue, but that would be the last thing to check.

Those #'s don't mean much, the dyno could read low but that's not too far off what a Ap1 00-01 makes. You could check your compression if you wish to see what kind of #'s they produce.

 

thanks. the seal was already put in so no more leak.

sorry that this is under the wrong section. How do i move it over? do i just repost it there or someone is going to do it for me.

I will keep in mind that the ecu is the last thing to check.

i will do a compression check to see where i am at. plus what is the stock compression for each cylinder?

 

For your problem you should have a compression check on each cylinder,as Hershey says.For your lost ps(00'-01' make 198-202 whp) you should sure change the gas filter,adjust your valves,clean up your TB and your injectors.99% and IF your compression in all cylinders is ok your car will get back it's lost power.As for plugs use the NGK'S IRIDIUM,best choise.

 

sorry,as iDomN8U says.

 

under the hood will get you many more responses.