i have a 90 civic hatch with a b18a1 and it seems like its not running to its full potential. its really hesitant off the bottom and it dosent seem to rev out i looked at the vacuum lines and there is a purge cut off and pressure reg. cut off solenoid valve one is there and one isnt idk if this is out off the car the motor came from is just what the hatch has stock someone help i want this damn thing to run right..thanks

 

A pic would help! So we can see how you have it ran currently!

 

i hope this helps because its really starting to get annoying

 

Check your timing first of all. Retarded timing could cause sluggish starts I would think.

You say it is not "revving out"? What exactly are the symptoms? Does it seem to hit a rev limiter? What ECU are you running? I would like to assume that this is not a fuel pump issue as it should be able to keep up with a stock B18 IMO.

 

Timing is good and it runs ok when u first start is the is will start stuttering off the bottom and when u drive it it's just won't rev out it will fall on it's face the gas tank keeps getting vacuum locked and it will free rev fine but once u drive it that's when it's starts to **** up that's why I thinks it's vacuum or fuel

 

If i remember correctly EF's dont have the pressure reg. cut off solenoid. I just had the one on mine and it ran great!

If you posted a pic i dont see it! Im thinking you might have the vacuum lines crossed.

 

it has the b18 in it so it should have both vacuum solenoids?

 

No! On mine, my fuel press reg ran off intake manifold.