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Old 06-25-2011, 08:57 AM   #1
01prepre
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Join Date: Jun 2011
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Unhappy jdm H22A problems... help please?

hello all,

first ill introduce you to my wife's car.. we have an 01 prelude called "prepre."
we have a usdm auto prelude with a jdm h22a 5 spd conversion. jdm ecu. non-atts lsd trans. (truly a bad ass car.) long story short we had issues with the crank on the h22a4. so i swapped this baby into it. running through the gears one day i mis-shifted and took her all the way up to 10k. luckily the engine didnt go boom. however i did back the clutch up against the flywheel, ripping it off the crank.. but thats another story... heres my issue.

after the mis-shift my paranoid ass sent it to my local performance shop for some testing. leakdown and compression came back in honda factory specs. so all is good here... now weeks later, i get a random cel. when the car is shut off and restarted it goes away for a week before it comes back.. very random light. no one condition makes it come on. now..

it has its random times when it just doesen't want to run. ill be in just say 2nd and floor it at 2k. it pulls like it should, but the moment it crosses 4k it has NOTHING! significant drop on power. v-tec is fine. hits hard like before. but if its in its "lag moment" even v-tec feels sketchy.

on another random start we had a knock. shut it off, add some oil, restart and gone. i dont know why it knocked.. so i ran the hell out of it then let it idle in front of me for nearly 2 hours with no bs. so now im really confused.. why the knock? the valve is loud on a cold start, then when its warm it just sounds like a honda.

in a nutshell....

mis-shift left sticky valve.
had valve lash adjustment.
leakdown good.
compression good.
random cel.
daily driven minimum of 30 miles a day.
no problems besides the random cel.
does not go into a "limp" mode. -feels fine.
no vacuum leaks.
no idle problems
mobile 1 oil every 22-2500 miles.


if anyone has experienced this before please let me know what you did to fix it! im tired of losing power.

wideband soon to keep tabs on AFR.

sorry for the ramble but wanted to give as much info as possible.

THANKS IN ADVANCE!
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h22a, lag, no fun!, powerloss

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