Cranks but wont start, help Please!

dylansword · 08-18-2011, 10:56 PM

my 87 turbo is having a problem! It has been having this problem off and on. What it is doing, is it will crank and crank, but will not fire and run. I still haven't figured out what it is. It just did it again and this time i did a little testing.

It has power at the fuel pump

I loosened the banjo bolt on the fuel rail and it had lots of gas squirt out when i had someone turn it over. I dont have the adapter to test exact pressure.

I pulled #1 spark plug and tested for spark. The first coupleces i tried to spark it at, either didnt have good ground, or it wasnt sparking. I put the spark plug on a powersteering mount bolt, and it didnt spark at first, and i either got the gap right for it to spark, or it finally sparked, but right after i saw spark, it started.

I have no idea of what it could be. A couple other times it has done this, i have disconnected the battery and let is sit for just a bit and then reconnected it and it started it. This time it didnt work.

My thoughts are, possible the ecu, or a sensor, possible cam sensor or crank.

Please give me your input, this is my daily driver!

Thanks

O and heres the list of mods

3in exhaust, afermarket fmic and piping, and maft pro

New tps, and o2 sensor, water pump, radiator.

08-18-2011, 10:56 PM	#1
dylansword 3" Exhaust Join Date: Jan 2010 Location: boise id Posts: 50	Cranks but wont start, help Please! my 87 turbo is having a problem! It has been having this problem off and on. What it is doing, is it will crank and crank, but will not fire and run. I still haven't figured out what it is. It just did it again and this time i did a little testing. It has power at the fuel pump I loosened the banjo bolt on the fuel rail and it had lots of gas squirt out when i had someone turn it over. I dont have the adapter to test exact pressure. I pulled #1 spark plug and tested for spark. The first coupleces i tried to spark it at, either didnt have good ground, or it wasnt sparking. I put the spark plug on a powersteering mount bolt, and it didnt spark at first, and i either got the gap right for it to spark, or it finally sparked, but right after i saw spark, it started. I have no idea of what it could be. A couple other times it has done this, i have disconnected the battery and let is sit for just a bit and then reconnected it and it started it. This time it didnt work. My thoughts are, possible the ecu, or a sensor, possible cam sensor or crank. Please give me your input, this is my daily driver! Thanks O and heres the list of mods 3in exhaust, afermarket fmic and piping, and maft pro New tps, and o2 sensor, water pump, radiator.