[89stang302gt]

I'm working on my wires 94 3.8. It has horrible miss (code P0302) and has fuel running out tailpipe and leaves a large white cloud of smoke behind. I've changed plugs, wires, and coil pack. Ive pulled the fuel rails and checked for leaking injectors , done compression test (between 155 and 165), checked for fuel in vacuum line to regulator. Checked fuel pressure its 32 when ruining but when you just turn the key it goes to 40 and then to 0 within a second. I'm not sure what to try next.

[mp4 player]

Start pulling then replacing plug wires one by one while running and see if you can isolate it down to a specific cylinder.

[v6kid]

Pull the plugs one by one and see how much the the rpm drops with each cyl. The one that doesn't really make a diff is your bad cyl. White coming out of your exhaust would be coolant, are you sure it's gas coming out of the exhaust?

[clidefr0g]

if theres no spark the gas would just drain out into his exhaust. but im not sure how it would get past the muffler unless u filled it up

[89stang302gt]

I pulled plug wires one at a time and I couldn't really notice a difference. The car smells really strong of fuel when running and the fluid running out the tail pipe is very flammable (I tested it) And smells of fuel.

[rfcsoulja]

You may wanna check and make sure you didn't get any fuel in your oil. It definitely sounds spark related.

[v6kid]

Ok I got less lazy. p0302 is cyl 2 misfire. I guess it sounds like you have a spark problem, make sure you are getting spark to the plug, and pull the plug to see how it looks/ measure the gap.

[stephen]

Originally Posted by 89stang302gt I'm working on my wires 94 3.8. It has horrible miss (code P0302) and has fuel running out tailpipe and leaves a large white cloud of smoke behind. I've changed plugs, wires, and coil pack. Ive pulled the fuel rails and checked for leaking injectors , done compression test (between 155 and 165), checked for fuel in vacuum line to regulator. Checked fuel pressure its 32 when ruining but when you just turn the key it goes to 40 and then to 0 within a second. I'm not sure what to try next.

The fuel pressure dropping rapidly to zero is not right. That plus code P0302 and gas coming out the exhaust is consistent with a major leak in the #2 injector. I would replace that injector.

[v6kid]

Originally Posted by stephen The fuel pressure dropping rapidly to zero is not right. That plus code P0302 and gas coming out the exhaust is consistent with a major leak in the #2 injector. I would replace that injector.

Nice one, I didn't even think about that.

[89stang302gt]

I borrowed an injector pulsing tool from a buddy and he said that the fuel pressure should drop between 5 and 8 psi for 1 pulse. So I removed the upper intake and clamped the return line and unplugged all the injectors and turned the key on to build the pressure. It got to 36lbs and when I pulsed each injector individually and they all had a drop of between 10 and 12. Cylinders one thru three were all at 12 and four thru six were 10-11. Are they all bad??

[BlueScreaM]

Rig it with some spark plugs or something similar and have flames coming out

[89stang302gt]

I clamped the return and with the gauge hooked up the pressure dropped 12lbs in an hour and half just sitting. The mechanic I borrowed the pulsing tool from said none of that would concern him. He said he would be looking at the computer. Any other ideas out there??

[89stang302gt]

Well I've given up on it for now. Put the car in storage for the winter. Maybe It'll magically fix itself over winter! LOL