B16a2 bent valve?
#1
B16a2 bent valve?
Ling story short I was doing a pull in my dc2 integra with a b16a2 (old owners swap, not mine). I ended up shifting into 2nd when trying to shift from 3rd to 4th. The car revved up to somewhere around 10,000 rpm before i could put the clutch in. I got home and did a oil change and a compression check. I came up with 180psi across all cylinders, all spark plugs were in good condition, and I found no metal shavings in the oil.
I know I need to do a leak down test to be sure that I didn't damage the valves. But seeing how I couldn't hear any problems and it seemed to be running fine I figured I was hopefully clear of any problems. Until the day after when the car developed a miss fire. The problem gets better and worse, and sometimes completely goes away. But for 90% of the time the car misses horribly and has little power.
What I want to know is, can a bent valve cause it to miss only some of the time? Or am I looking at something more like ignition? I'm currently not driving the car because it sounds like a Subaru and doesn't have much power at all.
I know I need to do a leak down test to be sure that I didn't damage the valves. But seeing how I couldn't hear any problems and it seemed to be running fine I figured I was hopefully clear of any problems. Until the day after when the car developed a miss fire. The problem gets better and worse, and sometimes completely goes away. But for 90% of the time the car misses horribly and has little power.
What I want to know is, can a bent valve cause it to miss only some of the time? Or am I looking at something more like ignition? I'm currently not driving the car because it sounds like a Subaru and doesn't have much power at all.
#2
Honda-Tech Member
Re: B16a2 bent valve?
A mechanical over rev typically ends in bent valves if you are lucky... more often, the result is a dropped valve and ends in catastrophic engine failure. Consider yourself lucky. Do a compression test now that you have a misfire and see if you get different results.
#3
I like the tuna here
Re: B16a2 bent valve?
A bent valve will not misfire only some of the time, you are hopefully looking at either ignition or fuel. I had an injector filter crimp itself in the fuel rail once, gave a misfire every once in a while but ran great the rest of the time.
#4
Re: B16a2 bent valve?
It has been pretty wet around here lately. Any possibility of some moister being somewhere its not supposed to be? I'm thinking i should pull my distributor to see if there is any sort of moiture building up. Check plugs amd wires while im there aswell.
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