I got these aftermarket cams and cam gears for my crx, the cam gears came already attached to the cam shafts. SO, I installed them today, I got #1 piston at TDC, I aligned the timing marks on the cam gears, and I put the timing belt on, but when I rotated the crank I realized that when the intake valves closed, the exhaust valves were also closed and they opened after I rotated the crank 180 degrees. That makes me conclude that when the piston goes up the exhaust valves are closed, therefore, not allowing gases to go out. Am I right? or is that how its supposed to be?

 

60-1EK share your knowledge

 

This is normal. This is the compression stroke. After the intake stroke comes the compression stroke. Exhaust doesn't happen till the "exhaust stroke" which is after the Combustion stroke.

 

Make sure you have all your marks lined up, crank mark off the side of the oil pump and the one on the gear, and the marks on the cam gears. Which should all be at TDC since this is when the cycle starts. And you should do a vavle adjustment after.