i gotta dilemma here, i swapped a jdm h22 into my 4th gen about a year ago and yesterday i misshifted my car, instead of going from 3rd to 4th i did a 3rd to 2nd and dipped the revv's to 8,500 rpm for less then a second because i caught myself going in the wrong gear, the car started running like ****. sounded like a WRX with an exhaust/ or truck. there is no smoke out the exhaust. i changed the spark plugs. and i just need a second opinion. did i bend a valve?

 

Same thing happen to me yesterday. except i have a 5th gen type-sh. did the 3rd to 2nd and my valves were already ticking. exhaust sounds like ****. i have a diagnostics test thing and it said i have a misfire in cylinder 2 and insufficient gas flow. so with those 2 things i understand i have a bent exhaust valve in cylinder 2. so it sounds like your on the same boat. also my idel is very ruff now and at about 300 rpm. it doesnt shut off on me but it sure feels like it wants to. pretty much cylinder 2 isnt burning the fuel and my exhaust smells like str8 gas. im sure that spark plug is drowned in gas. i understand i need to buy a new valve and and might as well take the head off and get it all done. anyone have a rough idea on how much this might cost?

 

did all the plugs look identical? if any of them were different color, that is the cylinder there is a problem. i'm guessing power is affected?

sounds to me like a bent valve or two.

 

most likely bent valves. drive better.

 

Compression test is your friend

 

do a leak down test as well. it will tell you exactly where it is leaking. If you have bent exhaust valves, air will come out of the header. if you have bent intake valves, it will come out of the throttle.

 

since i need to replace a valve i want to just replace them all. also in the future i wanted to go stage 2 cams. which brand of valves/springs/reatainers do u guys recommend i can buy to use now to replace my valves and also use with stage 2 cams in the future? i searched and read Ferrea valves and reatiners. i wanted to know your opinion on putting those in now to replace mine and later on use them for stage 2 cams? all advice is welcome. merry christmas

 

Been there done that. I bent every exhaust valve. Lol I still beat the GT Mustang I was racing too. There is a reason Third to Second at redline is called the "Money Shift". It usually costs you Money. But do a compression check and leak down before you go pulling the head off.

 

alright thanks for all the input, ill do a compression test and see if any are leaking

 

bump

 

back handing into fourth FTMFW!!!!

 

well i put the vavle cover back on and put the spark plugs in to see before i waste any time doing compresssion tests and whatnot. i started the car and it seemed normal? and i drove the car and it drove fine, popped in vtec and all. im not sure why but im not questioning it ...lol

 

lol you still should do leakdown though just incase. it might seem fine but who knows

 

Does the car idle funny? Does it shut off when you're stopped?

Same thing happened to a friend of mine, except he thinks he revved it over 10,000 RPM. After that, the car didn't run right. We couldn't hear any unusual ticking or any thing else. It sounded perfectly normal, ran fine at low RPM, but at high RPM it was drastically slower. The idle would surge ever so slightly when the car is stopped, it would go up to 1,100 RPM and then back to normal, then up to 1,000 and down again, and so on. At other times it idled normal, so it was confusing. We checked everything, changed a few things, but the car still ran like crap. Many different things could have gone wrong, so we decided to open it up and find out. Before we did anything else, I checked the valve clearance and found out that two exhaust valves were way off, one on the intake side also way off, and another 3 just a bit off. So we completed the valve adjustment, took the car for a drive and were pleasantly surprised, the car now runs like a champ again.

Point of the story: Check your valve clearance before you assume the valves are bent and what not. You might get lucky

From what you said so far, I couldn't gather exactly what you did so far, aside from taking the spark plugs out and valve cover off. So I'd suggest that you inspect the valve clearance and adjust if necessary (even if they don't tick louder). I would also check the timing.

 

thats never a good thing