Hey, I'm new to this forum, and forums in general. So i'll start off by listing my mods. hi-tech stage 2 cams, trick flow 75mm TB and plenum, u/d pulleys, magnaflow magnapack exhaust, long tube headers and x pipe, and that's all I can think of.
Now, the issue at hand. I've had a miss for a while, so I finally broke down and bought a new set of Accel coil packs and autolite manufacturer replacement spark plugs. After I changed them, the car ran smooth and had a noticeable increase in power; however, it had a very loud ticking or knocking sound that would go away and come back.
I thought it could be a valve spike so I was driving to the gas station to see if some 93 octane would make any change. On the way the car started the tick/knock again (it would increase and decrease with RPMs), but this time shortly after it started stumbling like it were out of fuel and abruptly died.
After I towed it home, I scoured forums and noticed that 4.6 mod family is notorious about blowing out spark plugs and that the symptoms were a ticking noise followed by complete loss of power. So, I checked the plugs and one was really loose, so I checked the rest and the rest were normal and the threads seemed fine. I tightened it up and tried to start it to no avail. So, I tried the old coil packs, no change. I installed all of the old plugs, no change.
One thing I did notice, fuel pressure seems low. I don't have a gauge, but it doesn't squirt out with very much pressure. It has a new fuel pump and new fuel filter, and it does prime.
One more thing to note, it does crank over normally, and after a while it will start for about 2-5 seconds and then die and wont start again for a while.
I'm pretty dumbfounded at this point, and I would be grateful for any help.
Thanks
Now, the issue at hand. I've had a miss for a while, so I finally broke down and bought a new set of Accel coil packs and autolite manufacturer replacement spark plugs. After I changed them, the car ran smooth and had a noticeable increase in power; however, it had a very loud ticking or knocking sound that would go away and come back.
I thought it could be a valve spike so I was driving to the gas station to see if some 93 octane would make any change. On the way the car started the tick/knock again (it would increase and decrease with RPMs), but this time shortly after it started stumbling like it were out of fuel and abruptly died.
After I towed it home, I scoured forums and noticed that 4.6 mod family is notorious about blowing out spark plugs and that the symptoms were a ticking noise followed by complete loss of power. So, I checked the plugs and one was really loose, so I checked the rest and the rest were normal and the threads seemed fine. I tightened it up and tried to start it to no avail. So, I tried the old coil packs, no change. I installed all of the old plugs, no change.
One thing I did notice, fuel pressure seems low. I don't have a gauge, but it doesn't squirt out with very much pressure. It has a new fuel pump and new fuel filter, and it does prime.
One more thing to note, it does crank over normally, and after a while it will start for about 2-5 seconds and then die and wont start again for a while.
I'm pretty dumbfounded at this point, and I would be grateful for any help.
Thanks