M son is driving from BC to Ontario in a 240z with 10,000miles on a rebuilt L28 triple webers. 280 distributor, xr700/PS92 ignition. Fuel pressure is 3.5 psi. It ran fine for 12 hours to Calgary, in heavy rain.
Now , without any load, sitting in the driveway, he says it sounds perfect at idle, and it revs up high just fine. But as soon as he tries to let the clutch out to drive, it stumbles, coughs, won't develop power. It then tries to rev up and go, then stumbles again. At high RPMs it will go, but not up a hill. It will not maintain power up a hill, or under load.
He noticed a spark plug wire came off, and another lost the connector end, but that was fixed, and the problem remains.
Is there anyone in Calgary who I could send him to, mechanic or enthusiast. Will pay cash. Or any advice is appreciated.
This was my long term project/rebuild, that I put tons of time and money into. I donated to him as he is getting married. I ran it daily for a couple years. Then it sat for several years, and was run every couple months. But it ran fine for 10+ hours today over the Rockies.
Thanks for any advice.
Tom