ok here it is i have a 1st gen crx a 87 hf with a carb.(non efi). the motor just got out of the machine shop. the block was bored 30 over , decked to make sure it was flat, arias pistons(alloy). the head was ported, polished , new valves and valve seals, and also decked. it is stil running the stock cam for right now i want to break the motor in before i put the bullfrog cam in,and the nos. i put the motor together. i am very good at working on motors and cars. everything was put toghether right . number 1 piston at top dead center. cam at number 1 top dead center. distributor points at number 1. when i crank it over it trys to startbut will only run on one piston. so i checked the psi in all the chambers number 1 has 80 psi. number 2 has 40 psi . number 3 has 100 psi .number 4 has 150 psi. normal for this motor is 160 psi . what is wrong????????

 

anyone....... HELP please

 

HELP ME

 

There has to be a reason for your low compression numbers. Even brand new rings shouldn't have compression that low. Pour about a cap full of oil into each cylinder then do the compression test again.

 

is your cam timing correct? maybe the valves are staying open for most of the stroke

 

i have put oil on the top and it did not change but a point or two..
the timing is dead on.

 

If you're 100% sure your cam timing is dead on, and oil in the cylinders only helped a point or two, I'd look at your valves. Time to do a leak down and see where that air is escaping to.

 

you did all this to an HF BLOCK why... well you need to put a candian carbed head or a usdm SI head on there (no Cvcc) or better yer a candian si head (good luck finding one)but it sounds like you need to re check your timming

 

It sounds like the shp may have screwd up.