Ferrari Mailing List: Hesitation troubleshooting resolution

[Misc (misc]

Hi All,

Not necessarily Ferrari - but the root cause could happen to any
vehicle......

As an FYI - I was having trouble with my 78 JeepCJ5(258, 4bbl Holley)
running fine then dying randomly.  Well, I finally sorted everything out and
the root cause had two components: 1)  the distributor rotor had somehow
spun on the keyed shaft, thus throwing the spark out of whack, and most
importantly....2) the gas tank had rusted inside, creating gobs of goo that
would randomly get sucked into the fuel pickup screen and plug the pickup
tube, thus causing the stall - when the car died, the pickup lost suction
and the goo fell off, thus allowing a quick restart, followed by another
stall.

Thus, I replaced many parts not necessarily needing it(but after 32 years
probably wise) - HEI controller, battery, fuel pump, carb(which also had goo
in both bowls).  All I really needed to do was replace the rotor/cap,
tank(with a new aftermarket plastic tank) and fuel pickup screen.

I am now plowing the fresh Colorado Champaign powder with ease :)

Since we all have steel gas tanks, this is just another tool in the Ferrari
troubleshooting box......

Mark Lueker
308 SYSTEMS Inc.
970-282-7006
www.308systems.com