OK, had the '78 Midget w/ 1500 at the local High School auto shop (wife works for the district) and had "choice" student working on car with teacher oversight. Student has placed twice in the top three in the country in the Skills USA competition for automotive diagnosis and repair, so we (and his teacher) felt he was competent to work on the car. Teacher does not allow just any student to work on teacher cars, and especially THIS car!
He adjusted the timing for our altitude--WY vs CA, replaced a frost plug that had pushed out, a couple cooling system hoses and changed distributer cap and rotor.
Car has Pertronix ignition and PO hooked up electronic fuel pump under hood.
After performing the work the student took the car out for a test drive, several miles up several steep hills, and noted with satisfaction the increase in power (no more bogging down) and speed. They then ran it several times in the shop while doing minor work.
We picked up the car a week ago, and I got about four blocks from the school and after stopping for a stop sign, the car hesitated, lost power, surged and died. I rolled to the shoulder and tried restarting it. Cranked with no luck several times. Finally got it going, and made it almost back to the shop when it lost power and died again. Luckily this time a couple HS kids were near and helped push it up to shop. Teacher was puzzled as he knew it was running well for long periods in the shop and said HE would work on the car this time.
Went to pick it up Friday after teacher said it should be OK now, though he never told me what he did with it.
Got about two blocks and repeat of previous. Finally got restarted and got back to school. Teacher and I played with it, checked for fuel delivery (fine) and adjusted idle. Car would start and run, but if we tried turning off and restarting, it would not start for at least half hour or so, if it did.
Teacher was convinced it was fuel delivery problem (acted like had plugged fuel filter to me) but we could find no problems. Teacher was still scratching his head when I left with the car on a trailer, saying fuel delivery but could not figure it out. And of course Friday was last day of school so we couldn't let him play with it any more.
I thought possibly vapor lock, but after trailering home and later trying to start several times with cold engine, no luck.
It would start on occasion, with rough cold idle and a warm idle at about 8-900 rpm. However, when we try to give it gas to test drive, it surges and bumps, then dies, only to not restart for at least a half hour. It can sit and idle with the hood closed for more than an hour or so with no problems...
Electronic fuel pump does make a loud ticking sound and does get hot, but fuel delivery when disconnected from carb is fine and constant.
Could the fuel pump be dieing and not produce enough volume to run the car under load or heating excessivly and causing vapor lock from it to the carb?
Its extremely frustrating because I have not had the car here to tinker with for the last four weeks while its been at the school, and on top of the electrical gremlins I mentioned in previous posts, plus new carpet and top etc we want to install but haven't been able to w/o the car here, now this.
Any ideas or suggestions, other than to shoot it? Well, thats not really an option, because even with its many frustrations my wife loves the car, so she would wrestle the gun from me and shoot me if I harmed her "baby"!
He adjusted the timing for our altitude--WY vs CA, replaced a frost plug that had pushed out, a couple cooling system hoses and changed distributer cap and rotor.
Car has Pertronix ignition and PO hooked up electronic fuel pump under hood.
After performing the work the student took the car out for a test drive, several miles up several steep hills, and noted with satisfaction the increase in power (no more bogging down) and speed. They then ran it several times in the shop while doing minor work.
We picked up the car a week ago, and I got about four blocks from the school and after stopping for a stop sign, the car hesitated, lost power, surged and died. I rolled to the shoulder and tried restarting it. Cranked with no luck several times. Finally got it going, and made it almost back to the shop when it lost power and died again. Luckily this time a couple HS kids were near and helped push it up to shop. Teacher was puzzled as he knew it was running well for long periods in the shop and said HE would work on the car this time.
Went to pick it up Friday after teacher said it should be OK now, though he never told me what he did with it.
Got about two blocks and repeat of previous. Finally got restarted and got back to school. Teacher and I played with it, checked for fuel delivery (fine) and adjusted idle. Car would start and run, but if we tried turning off and restarting, it would not start for at least half hour or so, if it did.
Teacher was convinced it was fuel delivery problem (acted like had plugged fuel filter to me) but we could find no problems. Teacher was still scratching his head when I left with the car on a trailer, saying fuel delivery but could not figure it out. And of course Friday was last day of school so we couldn't let him play with it any more.
I thought possibly vapor lock, but after trailering home and later trying to start several times with cold engine, no luck.
It would start on occasion, with rough cold idle and a warm idle at about 8-900 rpm. However, when we try to give it gas to test drive, it surges and bumps, then dies, only to not restart for at least a half hour. It can sit and idle with the hood closed for more than an hour or so with no problems...
Electronic fuel pump does make a loud ticking sound and does get hot, but fuel delivery when disconnected from carb is fine and constant.
Could the fuel pump be dieing and not produce enough volume to run the car under load or heating excessivly and causing vapor lock from it to the carb?
Its extremely frustrating because I have not had the car here to tinker with for the last four weeks while its been at the school, and on top of the electrical gremlins I mentioned in previous posts, plus new carpet and top etc we want to install but haven't been able to w/o the car here, now this.
Any ideas or suggestions, other than to shoot it? Well, thats not really an option, because even with its many frustrations my wife loves the car, so she would wrestle the gun from me and shoot me if I harmed her "baby"!