i have a 90 honda prelude si. i have been trying to start this car for a while now. replaced fuel pump, filter, and fuel pump relay. i have fuel going to the front to fuel filter thru the injectors. i have spark from coil to cap and rotor, the spark to plugs.. new plugs also still nothing.. I'm in need of any ideas to help me turn this car on i really am digging the car just need it to turn on..

 

What color is the spark from the plugs?

 

they are new i just replaced them with some autolite plugs

 

don't know the color of the plug because i used a tester. wouldn't think the color of the spark would matter

 

Yes it does, if you are getting an orange spark usually means a weak spark. Bright blue is a good healthy spark. If you are getting good spark I would look to see what the fuel looks like coming out of the injectors. A nice cone shape is good. If it dribbles or something usually would mean they have some gunk in them or they need rebuilt/replaced.

Also you may check the compression on the cylinders.

 

I know you said you can't get it to start but have you tried to pull any engine codes from it. See if that may tell you something.

 

the spark is blue on the plugs and i haven't checked the codes I'm gonna try that thanks. what do you think about the camshaft sensor? can that also be a problem?

 

I dont believe your Prelude has a cam sensor. It should have a crankshaft sensor but I would think if they was bad the car would at least back fire or act like it wanted to start. Heck wouldnt hurt to maybe buy a different ecu and hook it up and see if it run. They run about 40 bucks used.