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i just finished putting an rb25neo from a stagea into my r32.

i did a rough wiring job just to get the car started

im getting spark, fuel and the injectors are pulsing.

all timing marks on the belt are lined up and the engine has good compression.

but it wont start.

what could be the problem?

timing?

how can i tell if there is any fuel getting to the cylinders?

***im not sure about the compression readings

first three cylinders showed 1.115, 2.110 and 3.105psi. i know this is very low but the car should still start.

i couldnt get any accurate readings for other three cylinders. 4th showed 80psi and 5th showed 60psi.

then i went back to the first cylinder and it showed 60psi?????

im waiting for my battery to charge up. could a bad/flat battery be why im getting these readings?

thanks

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Yeh those readings sound really off. I just completed a compression test on my skyline and got 157 across the board (rb25det) which is what yours should be close to.

THe manual for the engine says that the limit is 0.9Mpa on the rb25det which is 130psi and factory is 175psi.

Another problem is that the engine is ment to be warm when performing a compression test.

im not gettting constistent readings.

first test showed 115,110,105, 80 and 60 for the first five cylinders. then i tried again on the first and it only showed 60psi.

this was done on a cold engine.

im pretty sure its not the engine.

how can i tell if the cylinders are getting fuel?

put a fuel pressure gauge on it (makes sure it is at least 40 psi) then put a hose on the injector (other end to your ear) you should hear it clicking, another way is to check with a multimeter.

put a fuel pressure gauge on it (makes sure it is at least 40 psi) then put a hose on the injector (other end to your ear) you should hear it clicking, another way is to check with a multimeter.

i can hear the injectors clicking when i turn the CAS.

does that mean they injecting fuel?

what do i put the fuel pressure guage on?

what would happen if i put a little fuel into the cylinder through the spark plug hole and tried starting it?

if it sounds like its firing then i guess im not getting any fuel to the cylinders.

would this work?

thanks

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