I thought some of the injectors were clogged on my 91 trooper cause I just couldn't get it timed and it had been setting for so long. When me and my brother took the fuel rail off to do a crank test on them to be sure they were all squirting properly, we found out they were all squirting just fine but they were all going at the exact same time. They would all squirt together and then pause and together again. We switched out the computer and distributor from his working 88 trooper but it still did the same thing and we are both out of idea as to what is causing this strange problem. Any info would be very much appreciated.