86 325 not starting

I have a 1986 325 2.7L and it has spark and has the correct fuel pressure. I have ruled out the fuel pump it is fine. I have tested to see if my plugs are sparking and they are. Still no ignition. When i first try it seems like it starts for one detonation then it dies and after that it just turns over, over and over. tried starting fluid again nothing. i checked the relays and they are working and i checked the fuses under the hood and they are all intact ( i checked them all just to be sure.

Any suggestions cause i am at a total loss and if i dont figure it out soon its going to a mechanic and if i can fix it myself id rather not fork over $400 or more on something that should only cost $100.

sounds like weak coil to me or gap on the plugs are wrong/bad plugs

Originally Posted by downhiller

sounds like weak coil to me or gap on the plugs are wrong/bad plugs

Coil is new and the plugs have been in there for 4 years with less that 10,000 miles maybe less than 5,000.

and i have had the car for 5 years and it just happened

could be a LOT more things, and near on impossible to diagnose here.

For example, we dont know if:
it is getting fuel in the compression chamber?
it has compression?
the crank position sensor working correctly?

the list goes on. not trying to be a dick here, but if your out of ideas at this stage, take it to a professional.

Originally Posted by _Ethrty-Andy_

could be a LOT more things, and near on impossible to diagnose here.

For example, we dont know if:
it is getting fuel in the compression chamber?
it has compression?
the crank position sensor working correctly?

the list goes on. not trying to be a dick here, but if your out of ideas at this stage, take it to a professional.

it is getting fuel? yes and pressure tested
it has compression? yes and tested

ok now check the CPS. should be approx 540ohms +/-5%

Did this just start happening? Or did you buy it non running?