1-PM Tuesday Car running great

2-AM Wednesday feels like an erratic misfire. 

3-AM Wednesday about 1 minute later.  Car barely turns over!😵‍💫

4-PM Wednesday Full Scale Hot Rod & Customs ok’s car into shop.  (Really stepped up on expediting car in)

5-AM Thursday. Problem discovered!  Mount for MSD distributor had failed.  Distributor bouncing around like lottery number balls🤔

6-PM Thursday. Spark plug wires, Spark plugs replaced and OEM distributor mount replaced.

7-CRUISING HOME😎👍🏁🇺🇸

HUGE THANKS TO FULL SCALE, VENTURA CA👏👏👏

#5...Do you mean the hold down clamp at the base came loose and the disty was rotating around randomly?

Yep!  The MSD was installed 2019 and the mechanic used mount from original build in 1978-79.  Chromed POT (Piece Of Trash) METAL😵‍💫.  After 45 yrs, garaged for 42+ yrs, less than 1000 miles.

Oh how I love this car😎👍🏁🇺🇸

Back on the road again

If the problem was the distributor, why were plugs and wires replaced too? I see repairs done like this all the time. Did they give you a reason for replacing plugs and wires? Or is that what was "recommended"?  I had a friend with a 66 El Camino that kept having a back fire. Took it to two different shops. One guy told him it was his carburetor and put  a Holley 2 barrel on it (it is a stock 283).  Still happened.

  Took it to another shop where they recommended installing an MSD box, plugs and wires... Still did it. He had now spent $1600.00 to fix the car and still had the same issue. He brought to my house and my brother and I looked it over. This car was original down to the smog pump. On the back of the smog pump is the "gulp valve". If the diaphram is torn in the valve, air mixture in the combustion chamber is change and causes the back fire.  We took the belt off to test and sure enough, with no air being pumped, no back fire. Removed the smog pump and plugged the holes on the exhaust manifold and sent him back to the two shops for his money back. No one would budge... The actual repair was about $12.00 in 3/8 pipe plugs. 

 Some of these shops really suck and don't know how to diagnose older cars.. 

www.wildbunchcarclub.com

Good questions and indeed plugs looked horribly arced,  wires were burned.  Over the past two years this shop has stood tall!  I truly appreciate the input