95 astro 4.3l having fule issue .. raw fuel is coming out the exhaust and has caught fire 2 times changed plugs wires cleaned distb cap need help please anyone who has any ideas

You really need this fixed fast for if you have raw fuel coming from your exhaust your catalytic converters must not be working. If they were working they would be running a extremely high temperatures and be a fire hazard.
You most likely have damaged exhaust valves causing this problem, a compression test will confirm if this is the case. The other possible causes are bad injectors, coils, spark plugs and ignition timing.

CHECK YOUR TIMING / PLUGS / PLUG WIRES / CAP N ROTOR / ALSO CHECK THE EXHAUST SYSTEM AS WELL BECAUSE IT MIGHT HAVE AN ISSUE WITH WITH THE OXYGEN SENSOR & AN EXHAUST PIPPING LEAK SOME WHERE ALONG IT.THERE MAY ALSO BE A BAD GROUND WIRE SOMEWHERE THAT MIGHT BE CAUSING AN ISSUE WITH IT BACK FIRING AS WELL.YOU MIGHT WANT TO CHECK THE GAS YOUR BUYING FOR IT AS WELL & ALSO USE A GAS TREATMENT THAT WILL CLEAN YOUR FUEL SYSTEM AS WELL.IF YOU STILL CAN'T GET IT RESOLVED TAKE IT TO A REPAIR SHOP TO HAVE A FULL CHECK OUT OF THE VEHICLE TO FIND THE EXACT CAUSE OF YOUR ISSUE.

I actually had to replace my EGR valve and the gasket. I clean the valve well and reused both. I don't think the gasket sealed well enough though. So I went ahead and got a new valve, gasket and changed them. It runs a lot smoother now.

ignition wires is agood start , check all wires for spark out put with spark tester saves a lot of time.

pull the vacuum line from the regulator and turn the key on and see if gas drips or sprays out from the nipple on the regulator if so that's your problem the fuel is going threw the line into the intake port

Here is what my Haynes Diesel Engine Repair Manual says for a noticeable lack of power, which is what you are describing.
1. Blocked air intake
2.Incorrectly adjusted timing
3.Blocked or damaged exhaust system
4.Obstruction in fuel filter
5.Blocked fuel tank vacuum vent in fuel cap
6.Insufficient fuel supply from tank to injector pump
7.Obstruction in fuel tank filter
8. Pinched or restricted fuel return line
9. Incorrect or contaminated fuel
10.External compression leaks ( glow plugs or injectors)
11. Obstruction in injector nozzles
12.Low compression
This book has an excellent diagnosis and repair section for your engine. It's Haynes part #10330 and costs about $20. Hope this helps.

Is it turning? spin motor with cap off.

If you're smelling unburnt gasoline, then it sounds like you're not getting fire to all cylinders. Not sure if your car has coil paks or distributor, but which ever it has, I would check to make sure all cylinders are firing. You can do this by starting the engine and pulling the wires off the coil paks/distributor one at a time. Listen and watch for any change or variation in the running of the motor. If it trys to die out then that plug is getting fire. If nothing changes in the way the motor runs, then it's a good possibility that that cylinder isn't firing. Hope this helps.

You may have some contaminated fuel,use a additive called heet,for moister,and lucas fuel treatment,these are premium additives,do not just use any brand,these I know will fix the problem if it is in the fuel.

Check Timing #1 Top Dead Center on Compresion Stroke And Look At Rotor Position If it Is Pointed at #1 On Dist Cap If Not Timing Chain Is the Problem<<