ok my friend has a 1987 rx7 and the problem before the car engine stop running was that in 1st 2nd and 3rd gear as you launch the car it had a big hesitation at 3krpm and it will jump down to 1500rpm.

after the car got parked home thanks to god that we dint had to tow the car home, the car won't start up at least like it used too. i crank it once in a while but nothing fuel gets to the fuel rail and oil as well get in but no start and i was asking if it has to do anything with the tps(throttle position sensor) or the fpd(fuel pulsation damper) or something but i already replace the fuel filter so there is nothing wrong with that and i try removing the stock fuel pressure regulator to see if there was pressure in the rail and it gush out a lot of fuel so im in a big pickle here guys. i already miss the car.

*Update:

the car has a s4 n/a engine

 

Hesitation means this could possibly relate to bad grounds. Clean the ground on the center iron and test voltage for fuel injectors. Also test spark and compression. Have you tried the deflooding procedure?

1badvert

 

We'll yeah but not by taking out the fuse and cranking it for 10sec we took out spark plugs then turn it by hand and let it be but I'll check for ground I just remember that the housing on top under the uim it's filled with sh*t and old grease