i have 90 crxsi with a built jdm b16 in it . the i gout form a friend and i put crower valve springs and retainer in it along with skunk 2 stage 1 cams. the bottom end has eagle rods je pistons 9 to1 . my problem is the car will not stay running unless u give it gas. need help the car runs really rich too. i have stock injectors in it with a stock p75. has any on had the problem. the is a brand new motor 0 miles on it. can any one help

 

An OBD1 LS ecu in a non OBD car, with a turbo B16 and stock injectors? Dude that thing shouldn't have ANY problems.

 

your really no help

 

what have you attempted for diagnostics?

 

well ive trid to do a compression test so far i think the ring arent sealing cause the compression went up a lot . when i added oil to the cylinders

 

true.

 

tell us your compression test results

 

you state turbo b16, but everything engine management wise you have is all factory oem stock unless you went and changed some components other than bolting a turbo kit up.


you;ll have to go through a diagnostic on the entire vehicle. start off with electronics, checking the TPS sensor, voltages make sure they're within range

make sure the map and TPS connectors are not switched

checking pin outs on your obd o-1 conversion harness


theres a lot to do that we cant simply just tell you via forums.

 

Why are you using a stock p75...i.e stock obd1 LS ecu on a vtec motor? Just curious. Are you running a wideband? If so whats the A/F Ratio?

 

Theres your problem. For all your car knows.. the motors is still stock. so your fuel and ignition isnt compensating for the larger lift of the cams let alone it being a dif. motor and having a turbo. Get it tuned!!before you blow it up.

 

bet you the valves are staying open with the new cams,set the valve lash at the specification of the cams

 

update... here i had my friends snow and fast ed come over and we got the rex running. i have a vac leak at the throttle body where the map senor goes missing o ring. rechecked timeing . checked valve lash and found i had valves to tight.. the motor is a built b16 , the motor hasnt seen the road and had 0 miles on it. i have a p 75 cuz i thought my p28 with my base map had issues with the tune on it , but now i found out other wise that i might be wrong. i had a autometer af guage so ill hook that up today. i need the car to run so i can get it to the dyno for my tune . ty everyone for your imput.