After driving around for a few minutes and allowing the engine to heat up, I take off in first gear, and it feels alot like those times you take off with the e break on by accident. It bogs very low until it releases at the clutch point when it then hardly accelerates. A second or two into acceleration it seems to pick up a little bit but not much. When VTEC is hit in first gear it literally seems like it's at half power. The engine still seems to be revving normally as I push it up to 9k rpms, but the rate of acceleration is dramatically slower.

Then, if I continue up through my gears, down shift to say....second, then slow way down almost to the point of stopping then hit the gas again, it starts doing the infamous bunny hopping and all I do to stop it is slam the clutch pedal back in. I do this all the time and it only bogs, hesitates, and bunny hops when it's warmer outside. I have come to the conclusion that it is one hundred percent heat related.

And also, if its unusually hot out, once the bogging starts it bogs and runs horrible from that point on. Until of course I turn the car off and start all over.

 

if your in 2nd gear and doing about 5mph like you said (almost to the point of stopping) and stomp the gas IT WILL bunny hop. this is how a manual car works. let someone else preferably with an S drive your car to see if they encounter the same problem. to me it still seems like your in the wrong gear and wrong rpm or not giving it enough gas when launching.

 

Bogging is not normal for this car so you're right, something is wrong. My 2nd S2000 bogged when I first purchaased it used with a SC. I had new spark plugs installed and the problem went away.

 

Explain. What do you mean by "it"? Engine RPM, Acceleration, both? What do you mean by "it releases at the clutch point"?

[QUOTE=Shanky,Mar 8 2008, 03:09 AM]The engine still seems to be revving normally as I push it up to 9k rpms, but the rate of acceleration is dramatically slower.

 

Selling a car becaue you can't get it to run properly reminds me of the old joke about the black horses, and the white horses.

"We use to raise horses. We had black horses, and white horses, but we had to get rid of the black horses."

"Why did you have to get rid of the black horses?"

"Because they ate more than the white horses."

"That doesn't make any sense. Why would the black horses eat more than the white horses?"

"Well, the only reason we could figure was because there were more of the black horses."


Whatever is causing the bog, it CAN be fixed, and it certainly isn't normal.
Instead of selling a car you like, find a good mechanic, and get the car fixed, properly.

 

Shanky, have you ever driven or ridden in an S2000 that was running properly?

 

Precisely. Otherwise no one in Texas or Florida would own one...

 

mmm....sometimes, from what i've read here before, fuel injector cleaner will make it worse, especially if you do it too often. the injectors have very fine screens that will trap loosened debris from other parts of the engine. i would find someone who can individually remove, clean and soak, and reinstall the injectors. and always use new o-rings. also if the clutch is only 6k mi on it, it may have been installed incorrectly, causing premature wearing. i agree find someone who has an s and drive each other's cars see what it should feel like....

 

I sometimes have this problem too

 

It's odd; I live in central Georgia, and even with FI and 100+ degree weather, my S2000 has NEVER bogged.