Mechanics

BAD STARTING ,ROUGH IDLING

1969 Porsche 912 • 50,000 miles

Bad starting and rough idling.
backfires ad idle, carb and exhaust.
ad speed engine sounds OK!

engine for 15 years no running!
Adjusted valves, rebuild solex carbs, new cpl distributor electronic ignition,
new sparkplugs and wires.
Cleaning fluid trough carbs to clean engine.
Compression on 1 cil low (9)rest is 11.
Noisy left bank(knocking)ad idle(cold).

Could it be loose head?Or?


Avatar
Louisseclassics
July 19, 2012.



Do a leak down test, you may have a sticky valve.

Mhpautos
Jul 19, 2012.
Ok I will try that.
Still it is strange that 3e cil gives that knocking sound(cold more)
Let you know!
Thanks,
Jan.

Tiny
Louisseclassics
Jul 19, 2012.