Ignition System: Cranking very well but won't start 75 1.8FI, Fixed: Major concern Ignitor and #3 fuel injector. :THANKS TIM! Options

[ndfrigi]

Need help diagnose from members!

Well, last saturday Feb. 13 I joined fellow members at the Aliso Viejo Cars and Coffee which is about 30 miles one way. After the event, drove home and for less than 2.5 miles away from home at a traffic light, my tachometer is bouncing between 2.5k to 3k rpm (sorry not 3.5k to 4k rpm on what I have said on the other thread). But the actual is pretty much on normal idle of less than 1k rpm. When about to go on green light, engine died. Tried to start the engine but it is just cranking (cranking very well), but the engine won't engage.

Some good members here already mentioned about ignition circuit. Well today, I was able to checked and opened the rotor cap, and I found out that I have/had Pertronix Electronic Ignitor which I already forgot since the last time I opened it last 2011 (Since the engine is running very well after I was able to make it run after fixing it from the time I bought. I haven't open it since then. I even bought lately a spare of contact points and condenser to replace it soon).

So a friend of mine was here this morning and asked him to start the engine and try touching at the base cover of my front mounted fuel pump and I don't feel any vibration. So we tried to unplug fuel hose from the SS engine tunnel lines which is a direct supply line from fuel pump to engine bay before the fuel injector line. We did crank the engine but no fuel is spitting out from the line.

So is it fuel pump issue I have?

In addition, a member also mentioned about the fuel pump relay from the relay board. But after opening my relay board cover. I noticed there is some wiring that was changed/modified. No round relay for the fuel pump terminal.





Thanks again for your help!

[ndfrigi]

Update:
Last night, Tim gave me his phone number and we started exchanging text messages to make the process more faster.

Well, after several test and different approached. This afternoon, Tim and I able to figure out that the New Contact Point is defective. This contact point has a resistance on both points even it is wide open. Wow this new defective points had given us especially Tim a headache why the Meter test we are doing does not make sense.
So, we decided to call it a day until I able to buy another new contact points. While preparing to remove all the tools and close the garage, I realized if the 1.7 core engine I have in my backyard has a contact point just to make comparison with it. Well the contact points from the core engine looks okay and no resistance on the points when it is open. I told Tim that i will install the used point and test the spark plug wire for a spark using timing light. When doing the first spark plug test on spark, I was at the side of the car while using the manual starter, the engine almost about to rev/run but the battery need to be charge. So after few minutes of charging the battery, I tried starting the engine, The RESULT: engine did run but wants to have a high rpm to have a good running engine and if I remove my foot on the accelerator, the engine will have a very rough idle and then dies. The used contact point seems cannot make the gap to exactly .4. the filler gauge does rub too much in between points. Tomorrow I will buy another contact point and update you guys tomorrow if the engine will do improve the idle and if I should need to adjust the timing now that I am using points instead of ignitor that I have before.

Thanks again to Tim, Clay, Joeproper, Mark and to all the other members who did share their knowledge and patience following this thread. I forgot to mentioned, thanks also to Abe and Bob who lend me their Ljet parts for me to use during the diagnosing which part has to be replaced. If not with those parts, maybe I have bought so much used Ljet parts like resister, dual relay, ECU, thermo time switch and cold start valve. That is what a 914world member is! Supportive and helpfull in many way!

God Bless!