1987 TR No-Start

Hey All-

Been chasing some running issues on my TR throughout the summer. Working with an expert but I try to do what I can in-between visits to assist in the trouble shooting. Anyway, we suspect something in the fuel system is in process of failing because we got things running beautifully last time and then the car started having problems stalling immediately after cold and hot starts. We've done a lot so if you have specific questions just ask me and I'll tell you, easier than listing everything. But in short the safety relay functions as do the O2 sensors and throttle switch.

As of this weekend the car just won't start anymore. It cranks but never fires. At one point it did fire, but stalled promptly after. My tech and I believe it is fuel, the ignition system is checked out and working wonderfully with fresh parts that have been proven for a few k miles. The thing is, with my limited experience, I can't think of anything in the system that would cause both banks to be starved of fuel.

Could someone way in on this for me? Perhaps send me in the right direction of what to research further?

 

This is exactly what I was looking for! Thanks as always, Steve. You are without equal.

 

Well Gentlemen,

This situation was easier than ever expected. While I ignored spark as the probable cause, when I sat down to start testing I still had to rule it off the list. In fact it WAS spark, the left side coil/module was shot. I replaced with a backup on-hand and the car is running amazingly. This sucker has been dying for a bit and giving me some frustrating problems along with a bad primary coil wire on the right side and poor CIS base tune. The car pulls like a freight train again, finally. Hopefully this sorts out the last of my 2020 problems that I've been dealing with on her.

 

that explains so much. So could an intermittent coil on that bank create intermittent variation of fuel pressure during operation? As in weak spark/weak pressure?