Elwaad posted an answer for this Nissan Cars & Trucks:
"From 6-9 month"
Elwaad posted an answer for this Saab Cars & Trucks:
"Probably bad gas. Put a can of gas dry."
Elwaad posted an answer for this Cars & Trucks:
"Ignition coils"
Elwaad posted an answer for this 2001 Ford Focus:
"Look at the 8th digit on the vin # 3 = Duel P = Single"