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Matt
Matt, Engineer - BEng Hons
Category: Porsche
Satisfied Customers: 21247
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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1985 911 Carrera intermittent start. Little to no spark

Customer Question

1985 911 Carrera intermittent start. Little to no spark
Submitted: 1 year ago.
Category: Porsche
Expert:  Matt replied 1 year ago.
Hello
I'd start by checking that the engine earth connections are tight and uncorroded
If thats OK then check that the coil /s have 12V to them and that the wirign connections are clean and uncorroded , check the wiring to the coils for any damage or cracked insulation
if this is all OK then I'd consider replacing the igntion coil (or both if there are 2)