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I want to apologize in advance, this post is going to be long but in order to solve this there is a lot of information that needs to be shared to get an idea of what’s going on here. I’ve got a real brain stumper on my hands here and I’m dumb founded and have no idea what’s going on, I need...

So I was able to do a little more testing tonight and I have some information pertaining to my missfire issue. I’ve determined that this is not a missfire that’s limited to just one cylinder... this is a missfire that’s affecting all 8 cylinders. I hooked the timing light up to every cylinder...

One thing I forgot to add is ever since I got this crane cams hi-6 cd ignition box I have gone through a significant amount of pick up coils. And one time the button under the coil wire inside the distributor cap melted away completely causing a terrible miss fire that I diagnosed very quickly...

Is it possible that my crane cd ignition box could be causing this? I ohmed all my plug wires before installing them and they all measured at 50 ohms per foot. The crane ignition box is the only thing I haven’t replaced in the entire ignition system.

Float level is exactly half way up the sight glasses which is where quickfuel says to have the float level.

I will do the wire test. The only issue is I don’t have a shop at the moment and my truck is on the side of the road and the entire neighborhood would be enraged with me if I went there reving the engine up right now. My neighbor already hates my truck says its too loud complains about it to me...

Yes I’ve tried multiple plugs in cylinder 8 they all end up the same, semi fuel fouled and smelling like fuel a little bit.

Plug wires are brand new by the way too they don’t even have 100 miles on them. Same with coil. I bought new plugs, new wires and a new coil and a new distributor thinking this was ignition trying to solve this and none of that made a difference.

Haven’t been losing brake fluid to my knowledge. The brake boosters vacuum hose goes from brake booster to the back of the intake manifold on drivers side. Close to cylinder 5

My crane cams hi-6 cd ignition box is grounded directly to the negative battery terminal on the battery. I have a 4 gauge wire from block to negative on battery and a 4 gauge wire from body to battery negative and a 4 gauge from frame to body.

Yes as far as I can tell number 8 is the only cylinder that’s missing. I’ve pulled all the plugs multiple times looking for an issue and number 8s plug is always semi fuel fouled and even smells like fuel a little bit. The other 7 plugs looks great. It’s not an issue in the distributor. This is...

so I have a 300hp crate 360 magnum in my 91 half ton short bed 4x4 truck. The engine has around 30k miles on it. I’ve discovered a rough spot around 2000-3000 rpm that seems to get better once you punch the throttle but it comes back the second you ease off and stay at a steady throttle setting...

I've never had a leak running synthetic in this engine, that could be because it's had nothing but synthetic ran it after break in.

This engine sees very mild use all year long. I probly don't even put 5000 miles on it in a year. But I will drive it in the winter specially if the snow is thick and I need 4x4. Like I said engine has about 20 thousand miles on it right now. And the first 3 thousand miles it got regular...

I have a 300hp crate 360 magnum that my father purchased brand new in 2002. This motor has around 20 thousand miles on it. I live in Idaho where in the winter temps can get as low as 30 below zero and winter is the longest season. Summer it can get as high 105. I have been running 5w-30 in it...