I just rebuilt my b18c1 and I'm trowing a check engine light which the Haynes manual say its the manifold absolute pressure. It goes back off when you shut the car off and on and it take a little it for it to come back on. It seems to idle good and smooth. The book says check the map sensor. What could it be I did not a have this problem before the rebuilt motor. It also seems like I am getting bad gas mileage.

 

double check your lines

 

I checked and everything looks fine

 

There is this piece that I broke that's on top of the intake manifold which is the VALVE ASSY., PURGE CUT SOLENOID. The piece on top of it FILTER ASSY., SOLENOID VALVE is what broke off. Here is a diagram of it numbers 6 and 8. http://www.acuraautomotivepart...ormal Could that have anything to do with the check engine light?

 

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