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h22a type sh engine swap misfire

 
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Old 05-09-2017, 06:16 PM
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h22a type sh engine swap misfire

I had a H22a type SH engine swap done on my 98 Prelude SH. It is currently still with my mechanic. Last week he said the check engine light was coming on indicating cylinder misfire. It's been a week and he has done the following and the problem is still there.

Changed Distributor, cap and rotor, plugs and wires, fuel injectors, map censor, knock censor.

cleaned egr, adjusted the valves, verified timing belt, cat eliminated to test.

Did a compression and leakdown test and got a very high reading (240). unusually high? has the h22 been modified?

He said it's giving p0399 code and saying all cylinders are misfiring.

Engine light comes on fastest when you go hard on first and second but it still comes on no matter what.
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Old 05-09-2017, 09:45 PM
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Re: h22a type sh engine swap misfire

Update. It seems it may be the ecu. should you only use jdm ecu on jdm engine?
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Old 05-10-2017, 12:37 AM
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Re: h22a type sh engine swap misfire

ignition coil and crank sensors?
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Old 05-11-2017, 02:43 PM
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Re: h22a type sh engine swap misfire

Sounds like an ecu or electrical issue if it's a jdm swap we always recommend some kind of tune
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Old 05-11-2017, 10:46 PM
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Re: h22a type sh engine swap misfire

Did you do a straight up type s swap with atts etc..? What parts did you swap over from the USDM motor? Are you running OBD2?
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Old 05-12-2017, 10:35 AM
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Re: h22a type sh engine swap misfire

Quote:
Originally Posted by Azwethinkweiz View Post
Did you do a straight up type s swap with atts etc..? What parts did you swap over from the USDM motor? Are you running OBD2?
It's fixed now. He put in the jcm ecu and the check engine light went away.
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