Hi, im pretty new to the site (been reading for a while) as well as I am new to engine internals in general, although I've owned many a Honda (a B16A integra (DA), EF civic Sedan and hatch, 2 fifth gen accords), this is the first one needing "internal" work.
Anyway, I bought a 91 Accord LX sedan 5-speed for $350. Has 115,300 miles on it, original engine/trans. I thought it ran okay, the guy told me one cylinder wasn't firing due to a bad plug wire. I figured, hell most clean shells go for $300, so even the engine is beat, I atleast got a good transmission for $50 As luck would have it, the engine is beat!
Ok, on to the tech. I went ahead and bought new plugs (NGK V-Power OEM replacements like in all my other Hondas - work great), new wires, cap and rotor. Put all of them on, expecting a miracle but it still ran the same (smells like gas, if you let it idle under 750 it dies, no power, it just makes a "tingling" noise when you step on the gas, my old 5th gen did it if you floored it in 5th, like the engine doesn't have power to go anywhere if that makes sense). Also I got an emissions test done, at idle, HC is 2500ppm, should be 220, and at 2500RPM it is 3400ppm, should be 220. C0 was around 2.30%, should be 1.20%.
So, I check for spark. Good in all 4. All four injectors are clicking. So, as I pull out the plugs to do a compression test, all of them look the same except for #3 (second to the dist. side, counting left to right 4 3 2 1), it is really dark. All cylinders are around 135psi except #3 which is 15psi. (130, 15, 135, 138). Didn't do a wet test (yet). Also, it burns oil, and the radiator is cracked, caused it to run hot on me once (at the emissions test actually), but didn't overheat or boil over. I took off the valve cover and cranked, and all 16 valves are moving, and nothing looked out of the ordinary there.
After searching and consulting, I think it might be a bad ring or a cracked piston. If it was something in the head, I'd just rip the head off and replace it/get it machined, whatever. But since its probably block related, I might throw in a JDM F20B DOHC or an easy bolt-in swap (no $$$ for H22).
So based on the info I've given, would you believe it is something in the block (cracked piston/ring issue), or just bent valve, etc. Thanks!
Anyway, I bought a 91 Accord LX sedan 5-speed for $350. Has 115,300 miles on it, original engine/trans. I thought it ran okay, the guy told me one cylinder wasn't firing due to a bad plug wire. I figured, hell most clean shells go for $300, so even the engine is beat, I atleast got a good transmission for $50 As luck would have it, the engine is beat!
Ok, on to the tech. I went ahead and bought new plugs (NGK V-Power OEM replacements like in all my other Hondas - work great), new wires, cap and rotor. Put all of them on, expecting a miracle but it still ran the same (smells like gas, if you let it idle under 750 it dies, no power, it just makes a "tingling" noise when you step on the gas, my old 5th gen did it if you floored it in 5th, like the engine doesn't have power to go anywhere if that makes sense). Also I got an emissions test done, at idle, HC is 2500ppm, should be 220, and at 2500RPM it is 3400ppm, should be 220. C0 was around 2.30%, should be 1.20%.
So, I check for spark. Good in all 4. All four injectors are clicking. So, as I pull out the plugs to do a compression test, all of them look the same except for #3 (second to the dist. side, counting left to right 4 3 2 1), it is really dark. All cylinders are around 135psi except #3 which is 15psi. (130, 15, 135, 138). Didn't do a wet test (yet). Also, it burns oil, and the radiator is cracked, caused it to run hot on me once (at the emissions test actually), but didn't overheat or boil over. I took off the valve cover and cranked, and all 16 valves are moving, and nothing looked out of the ordinary there.
After searching and consulting, I think it might be a bad ring or a cracked piston. If it was something in the head, I'd just rip the head off and replace it/get it machined, whatever. But since its probably block related, I might throw in a JDM F20B DOHC or an easy bolt-in swap (no $$$ for H22).
So based on the info I've given, would you believe it is something in the block (cracked piston/ring issue), or just bent valve, etc. Thanks!
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