Engine bk firering & lose of compression.

if you have replaced cap and rotor plus coil and it seemed to fire up then i would take the next step. For sure put your new plugs and wires on then make sure you have replaced your air filter, and change out your fuel filter, fire up the vehicle if it doesn't start I would suggest changing the fuel pump. If it starts up make sure you put in some BK fuel injector cleaner in your fuel it might be you have dirty injectors. If all fails then get back with me and we will look else where. Good luck hope this info helps you out

all cars , gas (otto cycle)
it only takes 3 things to run.
good engine. (compression test time number of cylinders) WOT.
good spark. (test it)
good fuel mix. (spark tips wet or dry)

if the engine is good, and the spark is hot and timed right.
try test fuel if engine is not flooded, (is it?)

try test fuel, if tool less or no money for a real mechanic.
see scotty do it here, (this only works 80% time) skip ad
http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp


posted now 100 times.

Depending if it is backfiring out carb or out exhaust will tell you if the time is off. The carb backfire is a sure sign the timing is off. A valve is not completely sealed off before ignition and it explodes before sealing off the chamber. This also could mean a burnt valve as well.
AN exhaust pipe backfire could be a few things. Raw fuel in muffler that ignites from the heat. Over rich mixture, timing, jump timing belt, clogged catalyst, etc.
Now your vehicle runs on LPG which actually is a good thing. Much cheaper then gasoline fuel. I am not familiar with LPG carburation methods, but backfires are pretty basic. Carb or exhaust fire, timing is a good direction and carb adjustment. I would do a compression test also. Check for a leak that is not allowing a full burn of the fuel in the chamber. Check vacuum lines also.
If Timing the vehicle requires a short between 2 points, it must be done to show correctly the proper setting without advancing the timing. As long as the distributor has not been removed and placed a tooth off which is rare, but jumped timing belts will set a tooth off occasionally. Do a compression test, it will let you know your engines condition accurately.

honestly, sounds like you should go to basics-check compression first, clean the throttle body , check fuel pump pressure at the rail on top of the engine-if you have any kind of check engine light, you need to get the code pulled, you have an OBDI system, so it is not as easy to diagnose-another basic is having good electrical power-battery and alternator in good condition.

check your carburater.

o2 sensor,clogged catalytic converter,tune up wires plugs fuel filter

a bad crank sensor causes a car to shut down while driving down road. and will not start back up for about 10 minutes. have car scanned to read the problem codes. any auto parts stores will scan for free.

first you buy a dictionary and learn the english language, then sell that piece of **** and buy something made in this country in this century

Have you checked your alternator?

Three thing and engine need to crank are fuel fire and compression so if you have the other two then you are losing compression i would suggest running a compression test on it. I hope that helps you out.