BAD STARTING ,ROUGH IDLING

1969 Porsche 912

Tiny

louisseclassics

July, 19, 2012 AT 11:41 AM

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?

FOUND 2374 RELATED QUESTIONS

2 Answers

Tiny

mhpautos

July, 19, 2012 AT 12:43 PM

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

Tiny

louisseclassics

July, 19, 2012 AT 1:00 PM

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

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