703crewchief
Member
- Joined
- Dec 1, 2002
Hello Members of the Board,
I'm very perplexed by a problem my new toy has. The car is an '87 Regal Turbo T and my extras include a cold air hard pipe with a K&N filter, a TO4E A/R 60 compressor, adj. fuel pressure regulator, Hooker headers with downpipe, big exhaust, and a Conley's Mini Mag PROM. I've owned the car a month and for two weeks now the car will pop and sputter out of both intake and exhaust when boost gets over 15 psi. This cause the engine to lose all power and takes a few seconds before it can rev again. Sometimes it will do it a little lower in the boost, and sometimes a little higher. It sounds as if it loses a cylinder or two, then it takes a few seconds for that cylinder or cylinders to pick back up after I lift off the throttle. My first thought was of fuel pressure, but the pressure is around 63lbs at 18- 20psi boost with no drop anywhere. I was told that was plenty. So my next action was to check MAF readings with a GM Tech 1(slow!). My MAF reads a maximum of 255 g/s, is that good? Even so, I had another MAF available, tried it and the problem is still there. Also the complete ignition system was swapped. New wires, plugs, coil pack and module. Still the popping is there, and it is getting worse. My next concern would be the injectors, they are stock but the car was running real strong before. I will perform an injector balance test Monday and see if they are all the same. If they are good, I have no ideas where to go next. If anybody out there has expereinced this or can help me in anyway, I will be very grateful for your input. Thank You.
I'm very perplexed by a problem my new toy has. The car is an '87 Regal Turbo T and my extras include a cold air hard pipe with a K&N filter, a TO4E A/R 60 compressor, adj. fuel pressure regulator, Hooker headers with downpipe, big exhaust, and a Conley's Mini Mag PROM. I've owned the car a month and for two weeks now the car will pop and sputter out of both intake and exhaust when boost gets over 15 psi. This cause the engine to lose all power and takes a few seconds before it can rev again. Sometimes it will do it a little lower in the boost, and sometimes a little higher. It sounds as if it loses a cylinder or two, then it takes a few seconds for that cylinder or cylinders to pick back up after I lift off the throttle. My first thought was of fuel pressure, but the pressure is around 63lbs at 18- 20psi boost with no drop anywhere. I was told that was plenty. So my next action was to check MAF readings with a GM Tech 1(slow!). My MAF reads a maximum of 255 g/s, is that good? Even so, I had another MAF available, tried it and the problem is still there. Also the complete ignition system was swapped. New wires, plugs, coil pack and module. Still the popping is there, and it is getting worse. My next concern would be the injectors, they are stock but the car was running real strong before. I will perform an injector balance test Monday and see if they are all the same. If they are good, I have no ideas where to go next. If anybody out there has expereinced this or can help me in anyway, I will be very grateful for your input. Thank You.
